diff options
Diffstat (limited to 'js.2')
| -rw-r--r-- | js.2/cpu.js | 1656 | ||||
| -rw-r--r-- | js.2/dynamicaudio-min.js | 1 | ||||
| -rw-r--r-- | js.2/jquery-1.4.2.min.js | 154 | ||||
| -rw-r--r-- | js.2/jquery.dimensions.min.js | 12 | ||||
| -rw-r--r-- | js.2/keyboard.js | 68 | ||||
| -rw-r--r-- | js.2/mappers.js | 1048 | ||||
| -rw-r--r-- | js.2/nes.js | 208 | ||||
| -rw-r--r-- | js.2/papu.js | 1422 | ||||
| -rw-r--r-- | js.2/ppu.js | 1846 | ||||
| -rw-r--r-- | js.2/rom.js | 201 | ||||
| -rw-r--r-- | js.2/roms.js | 777 | ||||
| -rw-r--r-- | js.2/utils.js | 18 |
12 files changed, 7411 insertions, 0 deletions
diff --git a/js.2/cpu.js b/js.2/cpu.js new file mode 100644 index 0000000..bde3f2a --- /dev/null +++ b/js.2/cpu.js @@ -0,0 +1,1656 @@ +NES.CPU = function(nes) { + this.nes = nes; + + // Keep Chrome happy + this.mem = null; + this.REG_ACC = null; + this.REG_X = null; + this.REG_Y = null; + this.REG_SP = null; + this.REG_PC = null; + this.REG_PC_NEW = null; + this.REG_STATUS = null; + this.F_CARRY = null; + this.F_DECIMAL = null; + this.F_INTERRUPT = null; + this.F_INTERRUPT_NEW = null; + this.F_OVERFLOW = null; + this.F_SIGN = null; + this.F_ZERO = null; + this.F_NOTUSED = null; + this.F_NOTUSED_NEW = null; + this.F_BRK = null; + this.F_BRK_NEW = null; + this.palCnt = null; + this.opdata = null; + this.cyclesToHalt = null; + this.crash = null; + this.irqRequested = null; + this.irqType = null; + + this.reset(); +} + +NES.CPU.prototype = { + // IRQ Types + IRQ_NORMAL: 0, + IRQ_NMI: 1, + IRQ_RESET: 2, + + reset: function() { + // Main memory + this.mem = new Array(0x10000); + + for (var i=0; i < 0x2000; i++) { + this.mem[i] = 0xFF; + } + for (var p=0; p < 4; p++) { + var i = p*0x800; + this.mem[i+0x008] = 0xF7; + this.mem[i+0x009] = 0xEF; + this.mem[i+0x00A] = 0xDF; + this.mem[i+0x00F] = 0xBF; + } + for (var i=0x2001; i < this.mem.length; i++) { + this.mem[i] = 0; + } + + // CPU Registers: + this.REG_ACC = 0; + this.REG_X = 0; + this.REG_Y = 0; + // Reset Stack pointer: + this.REG_SP = 0x01FF; + // Reset Program counter: + this.REG_PC = 0x8000-1; + this.REG_PC_NEW = 0x8000-1; + // Reset Status register: + this.REG_STATUS = 0x28; + + this.setStatus(0x28); + + // Set flags: + this.F_CARRY = 0; + this.F_DECIMAL = 0; + this.F_INTERRUPT = 1; + this.F_INTERRUPT_NEW = 1; + this.F_OVERFLOW = 0; + this.F_SIGN = 0; + this.F_ZERO = 1; + + this.F_NOTUSED = 1; + this.F_NOTUSED_NEW = 1; + this.F_BRK = 1; + this.F_BRK_NEW = 1; + + this.palCnt = 0; + this.opdata = new NES.CPU.OpData().opdata; + this.cyclesToHalt = 0; + + // Reset crash flag: + this.crash = false; + + // Interrupt notification: + this.irqRequested = false; + this.irqType = null; + + }, + + + // Emulates a single CPU instruction, returns the number of cycles + emulate: function() { + var temp; + var add; + + // Check interrupts: + if(this.irqRequested){ + temp = + (this.F_CARRY)| + ((this.F_ZERO===0?1:0)<<1)| + (this.F_INTERRUPT<<2)| + (this.F_DECIMAL<<3)| + (this.F_BRK<<4)| + (this.F_NOTUSED<<5)| + (this.F_OVERFLOW<<6)| + (this.F_SIGN<<7); + + this.REG_PC_NEW = this.REG_PC; + this.F_INTERRUPT_NEW = this.F_INTERRUPT; + switch(this.irqType){ + case 0: { + // Normal IRQ: + if(this.F_INTERRUPT!=0){ + ////System.out.println("Interrupt was masked."); + break; + } + doIrq(temp); + ////System.out.println("Did normal IRQ. I="+this.F_INTERRUPT); + break; + }case 1:{ + // NMI: + this.doNonMaskableInterrupt(temp); + break; + + }case 2:{ + // Reset: + this.doResetInterrupt(); + break; + } + } + + this.REG_PC = this.REG_PC_NEW; + this.F_INTERRUPT = this.F_INTERRUPT_NEW; + this.F_BRK = this.F_BRK_NEW; + this.irqRequested = false; + } + + var opinf = this.opdata[this.nes.mmap.load(this.REG_PC+1)]; + var cycleCount = (opinf>>24); + var cycleAdd = 0; + + // Find address mode: + var addrMode = (opinf >> 8) & 0xFF; + + // Increment PC by number of op bytes: + var opaddr = this.REG_PC; + this.REG_PC += ((opinf >> 16) & 0xFF); + + var addr = 0; + switch(addrMode){ + case 0:{ + // Zero Page mode. Use the address given after the opcode, + // but without high byte. + addr = this.load(opaddr+2); + break; + + }case 1:{ + // Relative mode. + addr = this.load(opaddr+2); + if(addr<0x80){ + addr += this.REG_PC; + }else{ + addr += this.REG_PC-256; + } + break; + }case 2:{ + // Ignore. Address is implied in instruction. + break; + }case 3:{ + // Absolute mode. Use the two bytes following the opcode as + // an address. + addr = this.load16bit(opaddr+2); + break; + }case 4:{ + // Accumulator mode. The address is in the accumulator + // register. + addr = this.REG_ACC; + break; + }case 5:{ + // Immediate mode. The value is given after the opcode. + addr = this.REG_PC; + break; + }case 6:{ + // Zero Page Indexed mode, X as index. Use the address given + // after the opcode, then add the + // X register to it to get the final address. + addr = (this.load(opaddr+2)+this.REG_X)&0xFF; + break; + }case 7:{ + // Zero Page Indexed mode, Y as index. Use the address given + // after the opcode, then add the + // Y register to it to get the final address. + addr = (this.load(opaddr+2)+this.REG_Y)&0xFF; + break; + }case 8:{ + // Absolute Indexed Mode, X as index. Same as zero page + // indexed, but with the high byte. + addr = this.load16bit(opaddr+2); + if((addr&0xFF00)!=((addr+this.REG_X)&0xFF00)){ + cycleAdd = 1; + } + addr+=this.REG_X; + break; + }case 9:{ + // Absolute Indexed Mode, Y as index. Same as zero page + // indexed, but with the high byte. + addr = this.load16bit(opaddr+2); + if((addr&0xFF00)!=((addr+this.REG_Y)&0xFF00)){ + cycleAdd = 1; + } + addr+=this.REG_Y; + break; + }case 10:{ + // Pre-indexed Indirect mode. Find the 16-bit address + // starting at the given location plus + // the current X register. The value is the contents of that + // address. + addr = this.load(opaddr+2); + if((addr&0xFF00)!=((addr+this.REG_X)&0xFF00)){ + cycleAdd = 1; + } + addr+=this.REG_X; + addr&=0xFF; + addr = this.load16bit(addr); + break; + }case 11:{ + // Post-indexed Indirect mode. Find the 16-bit address + // contained in the given location + // (and the one following). Add to that address the contents + // of the Y register. Fetch the value + // stored at that adress. + addr = this.load16bit(this.load(opaddr+2)); + if((addr&0xFF00)!=((addr+this.REG_Y)&0xFF00)){ + cycleAdd = 1; + } + addr+=this.REG_Y; + break; + }case 12:{ + // Indirect Absolute mode. Find the 16-bit address contained + // at the given location. + addr = this.load16bit(opaddr+2);// Find op + if(addr < 0x1FFF) { + addr = this.mem[addr] + (this.mem[(addr & 0xFF00) | (((addr & 0xFF) + 1) & 0xFF)] << 8);// Read from address given in op + } + else{ + addr = this.nes.mmap.load(addr) + (this.nes.mmap.load((addr & 0xFF00) | (((addr & 0xFF) + 1) & 0xFF)) << 8); + } + break; + + } + + } + // Wrap around for addresses above 0xFFFF: + addr&=0xFFFF; + + // ---------------------------------------------------------------------------------------------------- + // Decode & execute instruction: + // ---------------------------------------------------------------------------------------------------- + + // This should be compiled to a jump table. + switch(opinf&0xFF){ + case 0:{ + // ******* + // * ADC * + // ******* + + // Add with carry. + temp = this.REG_ACC + this.load(addr) + this.F_CARRY; + this.F_OVERFLOW = ((!(((this.REG_ACC ^ this.load(addr)) & 0x80)!=0) && (((this.REG_ACC ^ temp) & 0x80))!=0)?1:0); + this.F_CARRY = (temp>255?1:0); + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp&0xFF; + this.REG_ACC = (temp&255); + cycleCount+=cycleAdd; + break; + + }case 1:{ + // ******* + // * AND * + // ******* + + // AND memory with accumulator. + this.REG_ACC = this.REG_ACC & this.load(addr); + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + //this.REG_ACC = temp; + if(addrMode!=11)cycleCount+=cycleAdd; // PostIdxInd = 11 + break; + }case 2:{ + // ******* + // * ASL * + // ******* + + // Shift left one bit + if(addrMode == 4){ // ADDR_ACC = 4 + + this.F_CARRY = (this.REG_ACC>>7)&1; + this.REG_ACC = (this.REG_ACC<<1)&255; + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + + }else{ + + temp = this.load(addr); + this.F_CARRY = (temp>>7)&1; + temp = (temp<<1)&255; + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + this.write(addr, temp); + + } + break; + + }case 3:{ + + // ******* + // * BCC * + // ******* + + // Branch on carry clear + if(this.F_CARRY == 0){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 4:{ + + // ******* + // * BCS * + // ******* + + // Branch on carry set + if(this.F_CARRY == 1){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 5:{ + + // ******* + // * BEQ * + // ******* + + // Branch on zero + if(this.F_ZERO == 0){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 6:{ + + // ******* + // * BIT * + // ******* + + temp = this.load(addr); + this.F_SIGN = (temp>>7)&1; + this.F_OVERFLOW = (temp>>6)&1; + temp &= this.REG_ACC; + this.F_ZERO = temp; + break; + + }case 7:{ + + // ******* + // * BMI * + // ******* + + // Branch on negative result + if(this.F_SIGN == 1){ + cycleCount++; + this.REG_PC = addr; + } + break; + + }case 8:{ + + // ******* + // * BNE * + // ******* + + // Branch on not zero + if(this.F_ZERO != 0){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 9:{ + + // ******* + // * BPL * + // ******* + + // Branch on positive result + if(this.F_SIGN == 0){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 10:{ + + // ******* + // * BRK * + // ******* + + this.REG_PC+=2; + this.push((this.REG_PC>>8)&255); + this.push(this.REG_PC&255); + this.F_BRK = 1; + + this.push( + (this.F_CARRY)| + ((this.F_ZERO==0?1:0)<<1)| + (this.F_INTERRUPT<<2)| + (this.F_DECIMAL<<3)| + (this.F_BRK<<4)| + (this.F_NOTUSED<<5)| + (this.F_OVERFLOW<<6)| + (this.F_SIGN<<7) + ); + + this.F_INTERRUPT = 1; + //this.REG_PC = load(0xFFFE) | (load(0xFFFF) << 8); + this.REG_PC = this.load16bit(0xFFFE); + this.REG_PC--; + break; + + }case 11:{ + + // ******* + // * BVC * + // ******* + + // Branch on overflow clear + if(this.F_OVERFLOW == 0){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 12:{ + + // ******* + // * BVS * + // ******* + + // Branch on overflow set + if(this.F_OVERFLOW == 1){ + cycleCount += ((opaddr&0xFF00)!=(addr&0xFF00)?2:1); + this.REG_PC = addr; + } + break; + + }case 13:{ + + // ******* + // * CLC * + // ******* + + // Clear carry flag + this.F_CARRY = 0; + break; + + }case 14:{ + + // ******* + // * CLD * + // ******* + + // Clear decimal flag + this.F_DECIMAL = 0; + break; + + }case 15:{ + + // ******* + // * CLI * + // ******* + + // Clear interrupt flag + this.F_INTERRUPT = 0; + break; + + }case 16:{ + + // ******* + // * CLV * + // ******* + + // Clear overflow flag + this.F_OVERFLOW = 0; + break; + + }case 17:{ + + // ******* + // * CMP * + // ******* + + // Compare memory and accumulator: + temp = this.REG_ACC - this.load(addr); + this.F_CARRY = (temp>=0?1:0); + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp&0xFF; + cycleCount+=cycleAdd; + break; + + }case 18:{ + + // ******* + // * CPX * + // ******* + + // Compare memory and index X: + temp = this.REG_X - this.load(addr); + this.F_CARRY = (temp>=0?1:0); + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp&0xFF; + break; + + }case 19:{ + + // ******* + // * CPY * + // ******* + + // Compare memory and index Y: + temp = this.REG_Y - this.load(addr); + this.F_CARRY = (temp>=0?1:0); + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp&0xFF; + break; + + }case 20:{ + + // ******* + // * DEC * + // ******* + + // Decrement memory by one: + temp = (this.load(addr)-1)&0xFF; + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + this.write(addr, temp); + break; + + }case 21:{ + + // ******* + // * DEX * + // ******* + + // Decrement index X by one: + this.REG_X = (this.REG_X-1)&0xFF; + this.F_SIGN = (this.REG_X>>7)&1; + this.F_ZERO = this.REG_X; + break; + + }case 22:{ + + // ******* + // * DEY * + // ******* + + // Decrement index Y by one: + this.REG_Y = (this.REG_Y-1)&0xFF; + this.F_SIGN = (this.REG_Y>>7)&1; + this.F_ZERO = this.REG_Y; + break; + + }case 23:{ + + // ******* + // * EOR * + // ******* + + // XOR Memory with accumulator, store in accumulator: + this.REG_ACC = (this.load(addr)^this.REG_ACC)&0xFF; + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + cycleCount+=cycleAdd; + break; + + }case 24:{ + + // ******* + // * INC * + // ******* + + // Increment memory by one: + temp = (this.load(addr)+1)&0xFF; + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + this.write(addr, temp&0xFF); + break; + + }case 25:{ + + // ******* + // * INX * + // ******* + + // Increment index X by one: + this.REG_X = (this.REG_X+1)&0xFF; + this.F_SIGN = (this.REG_X>>7)&1; + this.F_ZERO = this.REG_X; + break; + + }case 26:{ + + // ******* + // * INY * + // ******* + + // Increment index Y by one: + this.REG_Y++; + this.REG_Y &= 0xFF; + this.F_SIGN = (this.REG_Y>>7)&1; + this.F_ZERO = this.REG_Y; + break; + + }case 27:{ + + // ******* + // * JMP * + // ******* + + // Jump to new location: + this.REG_PC = addr-1; + break; + + }case 28:{ + + // ******* + // * JSR * + // ******* + + // Jump to new location, saving return address. + // Push return address on stack: + this.push((this.REG_PC>>8)&255); + this.push(this.REG_PC&255); + this.REG_PC = addr-1; + break; + + }case 29:{ + + // ******* + // * LDA * + // ******* + + // Load accumulator with memory: + this.REG_ACC = this.load(addr); + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + cycleCount+=cycleAdd; + break; + + }case 30:{ + + // ******* + // * LDX * + // ******* + + // Load index X with memory: + this.REG_X = this.load(addr); + this.F_SIGN = (this.REG_X>>7)&1; + this.F_ZERO = this.REG_X; + cycleCount+=cycleAdd; + break; + + }case 31:{ + + // ******* + // * LDY * + // ******* + + // Load index Y with memory: + this.REG_Y = this.load(addr); + this.F_SIGN = (this.REG_Y>>7)&1; + this.F_ZERO = this.REG_Y; + cycleCount+=cycleAdd; + break; + + }case 32:{ + + // ******* + // * LSR * + // ******* + + // Shift right one bit: + if(addrMode == 4){ // ADDR_ACC + + temp = (this.REG_ACC & 0xFF); + this.F_CARRY = temp&1; + temp >>= 1; + this.REG_ACC = temp; + + }else{ + + temp = this.load(addr) & 0xFF; + this.F_CARRY = temp&1; + temp >>= 1; + this.write(addr, temp); + + } + this.F_SIGN = 0; + this.F_ZERO = temp; + break; + + }case 33:{ + + // ******* + // * NOP * + // ******* + + // No OPeration. + // Ignore. + break; + + }case 34:{ + + // ******* + // * ORA * + // ******* + + // OR memory with accumulator, store in accumulator. + temp = (this.load(addr)|this.REG_ACC)&255; + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + this.REG_ACC = temp; + if(addrMode!=11)cycleCount+=cycleAdd; // PostIdxInd = 11 + break; + + }case 35:{ + + // ******* + // * PHA * + // ******* + + // Push accumulator on stack + this.push(this.REG_ACC); + break; + + }case 36:{ + + // ******* + // * PHP * + // ******* + + // Push processor status on stack + this.F_BRK = 1; + this.push( + (this.F_CARRY)| + ((this.F_ZERO==0?1:0)<<1)| + (this.F_INTERRUPT<<2)| + (this.F_DECIMAL<<3)| + (this.F_BRK<<4)| + (this.F_NOTUSED<<5)| + (this.F_OVERFLOW<<6)| + (this.F_SIGN<<7) + ); + break; + + }case 37:{ + + // ******* + // * PLA * + // ******* + + // Pull accumulator from stack + this.REG_ACC = this.pull(); + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + break; + + }case 38:{ + + // ******* + // * PLP * + // ******* + + // Pull processor status from stack + temp = this.pull(); + this.F_CARRY = (temp )&1; + this.F_ZERO = (((temp>>1)&1)==1)?0:1; + this.F_INTERRUPT = (temp>>2)&1; + this.F_DECIMAL = (temp>>3)&1; + this.F_BRK = (temp>>4)&1; + this.F_NOTUSED = (temp>>5)&1; + this.F_OVERFLOW = (temp>>6)&1; + this.F_SIGN = (temp>>7)&1; + + this.F_NOTUSED = 1; + break; + + }case 39:{ + + // ******* + // * ROL * + // ******* + + // Rotate one bit left + if(addrMode == 4){ // ADDR_ACC = 4 + + temp = this.REG_ACC; + add = this.F_CARRY; + this.F_CARRY = (temp>>7)&1; + temp = ((temp<<1)&0xFF)+add; + this.REG_ACC = temp; + + }else{ + + temp = this.load(addr); + add = this.F_CARRY; + this.F_CARRY = (temp>>7)&1; + temp = ((temp<<1)&0xFF)+add; + this.write(addr, temp); + + } + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + break; + + }case 40:{ + + // ******* + // * ROR * + // ******* + + // Rotate one bit right + if(addrMode == 4){ // ADDR_ACC = 4 + + add = this.F_CARRY<<7; + this.F_CARRY = this.REG_ACC&1; + temp = (this.REG_ACC>>1)+add; + this.REG_ACC = temp; + + }else{ + + temp = this.load(addr); + add = this.F_CARRY<<7; + this.F_CARRY = temp&1; + temp = (temp>>1)+add; + this.write(addr, temp); + + } + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp; + break; + + }case 41:{ + + // ******* + // * RTI * + // ******* + + // Return from interrupt. Pull status and PC from stack. + + temp = this.pull(); + this.F_CARRY = (temp )&1; + this.F_ZERO = ((temp>>1)&1)==0?1:0; + this.F_INTERRUPT = (temp>>2)&1; + this.F_DECIMAL = (temp>>3)&1; + this.F_BRK = (temp>>4)&1; + this.F_NOTUSED = (temp>>5)&1; + this.F_OVERFLOW = (temp>>6)&1; + this.F_SIGN = (temp>>7)&1; + + this.REG_PC = this.pull(); + this.REG_PC += (this.pull()<<8); + if(this.REG_PC==0xFFFF){ + return; + } + this.REG_PC--; + this.F_NOTUSED = 1; + break; + + }case 42:{ + + // ******* + // * RTS * + // ******* + + // Return from subroutine. Pull PC from stack. + + this.REG_PC = this.pull(); + this.REG_PC += (this.pull()<<8); + + if(this.REG_PC==0xFFFF){ + return; // return from NSF play routine: + } + break; + + }case 43:{ + + // ******* + // * SBC * + // ******* + + temp = this.REG_ACC-this.load(addr)-(1-this.F_CARRY); + this.F_SIGN = (temp>>7)&1; + this.F_ZERO = temp&0xFF; + this.F_OVERFLOW = ((((this.REG_ACC^temp)&0x80)!=0 && ((this.REG_ACC^this.load(addr))&0x80)!=0)?1:0); + this.F_CARRY = (temp<0?0:1); + this.REG_ACC = (temp&0xFF); + if(addrMode!=11)cycleCount+=cycleAdd; // PostIdxInd = 11 + break; + + }case 44:{ + + // ******* + // * SEC * + // ******* + + // Set carry flag + this.F_CARRY = 1; + break; + + }case 45:{ + + // ******* + // * SED * + // ******* + + // Set decimal mode + this.F_DECIMAL = 1; + break; + + }case 46:{ + + // ******* + // * SEI * + // ******* + + // Set interrupt disable status + this.F_INTERRUPT = 1; + break; + + }case 47:{ + + // ******* + // * STA * + // ******* + + // Store accumulator in memory + this.write(addr, this.REG_ACC); + break; + + }case 48:{ + + // ******* + // * STX * + // ******* + + // Store index X in memory + this.write(addr, this.REG_X); + break; + + }case 49:{ + + // ******* + // * STY * + // ******* + + // Store index Y in memory: + this.write(addr, this.REG_Y); + break; + + }case 50:{ + + // ******* + // * TAX * + // ******* + + // Transfer accumulator to index X: + this.REG_X = this.REG_ACC; + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + break; + + }case 51:{ + + // ******* + // * TAY * + // ******* + + // Transfer accumulator to index Y: + this.REG_Y = this.REG_ACC; + this.F_SIGN = (this.REG_ACC>>7)&1; + this.F_ZERO = this.REG_ACC; + break; + + }case 52:{ + + // ******* + // * TSX * + // ******* + + // Transfer stack pointer to index X: + this.REG_X = (this.REG_SP-0x0100); + this.F_SIGN = (this.REG_SP>>7)&1; + this.F_ZERO = this.REG_X; + break; + + }case 53:{ + + // ******* + // * TXA * + // ******* + + // Transfer index X to accumulator: + this.REG_ACC = this.REG_X; + this.F_SIGN = (this.REG_X>>7)&1; + this.F_ZERO = this.REG_X; + break; + + }case 54:{ + + // ******* + // * TXS * + // ******* + + // Transfer index X to stack pointer: + this.REG_SP = (this.REG_X+0x0100); + this.stackWrap(); + break; + + }case 55:{ + + // ******* + // * TYA * + // ******* + + // Transfer index Y to accumulator: + this.REG_ACC = this.REG_Y; + this.F_SIGN = (this.REG_Y>>7)&1; + this.F_ZERO = this.REG_Y; + break; + + }default:{ + + // ******* + // * ??? * + // ******* + + this.nes.stop(); + this.nes.crashMessage = "Game crashed, invalid opcode at address $"+opaddr.toString(16); + break; + + } + + }// end of switch + + return cycleCount; + + }, + + load: function(addr){ + if (addr < 0x2000) { + return this.mem[addr & 0x7FF]; + } + else { + return this.nes.mmap.load(addr); + } + }, + + load16bit: function(addr){ + if (addr < 0x1FFF) { + return this.mem[addr&0x7FF] + | (this.mem[(addr+1)&0x7FF]<<8); + } + else { + return this.nes.mmap.load(addr) | (this.nes.mmap.load(addr+1) << 8); + } + }, + + write: function(addr, val){ + if(addr < 0x2000) { + this.mem[addr&0x7FF] = val; + } + else { + this.nes.mmap.write(addr,val); + } + }, + + requestIrq: function(type){ + if(this.irqRequested){ + if(type == this.IRQ_NORMAL){ + return; + } + ////System.out.println("too fast irqs. type="+type); + } + this.irqRequested = true; + this.irqType = type; + }, + + push: function(value){ + this.nes.mmap.write(this.REG_SP, value); + this.REG_SP--; + this.REG_SP = 0x0100 | (this.REG_SP&0xFF); + }, + + stackWrap: function(){ + this.REG_SP = 0x0100 | (this.REG_SP&0xFF); + }, + + pull: function(){ + this.REG_SP++; + this.REG_SP = 0x0100 | (this.REG_SP&0xFF); + return this.nes.mmap.load(this.REG_SP); + }, + + pageCrossed: function(addr1, addr2){ + return ((addr1&0xFF00) != (addr2&0xFF00)); + }, + + haltCycles: function(cycles){ + this.cyclesToHalt += cycles; + }, + + doNonMaskableInterrupt: function(status){ + if((this.nes.mmap.load(0x2000) & 128) != 0) { // Check whether VBlank Interrupts are enabled + + this.REG_PC_NEW++; + this.push((this.REG_PC_NEW>>8)&0xFF); + this.push(this.REG_PC_NEW&0xFF); + //this.F_INTERRUPT_NEW = 1; + this.push(status); + + this.REG_PC_NEW = this.nes.mmap.load(0xFFFA) | (this.nes.mmap.load(0xFFFB) << 8); + this.REG_PC_NEW--; + } + }, + + doResetInterrupt: function(){ + this.REG_PC_NEW = this.nes.mmap.load(0xFFFC) | (this.nes.mmap.load(0xFFFD) << 8); + this.REG_PC_NEW--; + }, + + doIrq: function(status){ + this.REG_PC_NEW++; + this.push((this.REG_PC_NEW>>8)&0xFF); + this.push(this.REG_PC_NEW&0xFF); + this.push(status); + this.F_INTERRUPT_NEW = 1; + this.F_BRK_NEW = 0; + + this.REG_PC_NEW = this.nes.mmap.load(0xFFFE) | (this.nes.mmap.load(0xFFFF) << 8); + this.REG_PC_NEW--; + }, + + getStatus: function(){ + return (this.F_CARRY) + |(this.F_ZERO<<1) + |(this.F_INTERRUPT<<2) + |(this.F_DECIMAL<<3) + |(this.F_BRK<<4) + |(this.F_NOTUSED<<5) + |(this.F_OVERFLOW<<6) + |(this.F_SIGN<<7); + }, + + setStatus: function(st){ + this.F_CARRY = (st )&1; + this.F_ZERO = (st>>1)&1; + this.F_INTERRUPT = (st>>2)&1; + this.F_DECIMAL = (st>>3)&1; + this.F_BRK = (st>>4)&1; + this.F_NOTUSED = (st>>5)&1; + this.F_OVERFLOW = (st>>6)&1; + this.F_SIGN = (st>>7)&1; + } +} + +// Generates and provides an array of details about instructions +NES.CPU.OpData = function() { + this.opdata = new Array(256); + + // Set all to invalid instruction (to detect crashes): + for(var i=0;i<256;i++) this.opdata[i]=0xFF; + + // Now fill in all valid opcodes: + + // ADC: + this.setOp(this.INS_ADC,0x69,this.ADDR_IMM,2,2); + this.setOp(this.INS_ADC,0x65,this.ADDR_ZP,2,3); + this.setOp(this.INS_ADC,0x75,this.ADDR_ZPX,2,4); + this.setOp(this.INS_ADC,0x6D,this.ADDR_ABS,3,4); + this.setOp(this.INS_ADC,0x7D,this.ADDR_ABSX,3,4); + this.setOp(this.INS_ADC,0x79,this.ADDR_ABSY,3,4); + this.setOp(this.INS_ADC,0x61,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_ADC,0x71,this.ADDR_POSTIDXIND,2,5); + + // AND: + this.setOp(this.INS_AND,0x29,this.ADDR_IMM,2,2); + this.setOp(this.INS_AND,0x25,this.ADDR_ZP,2,3); + this.setOp(this.INS_AND,0x35,this.ADDR_ZPX,2,4); + this.setOp(this.INS_AND,0x2D,this.ADDR_ABS,3,4); + this.setOp(this.INS_AND,0x3D,this.ADDR_ABSX,3,4); + this.setOp(this.INS_AND,0x39,this.ADDR_ABSY,3,4); + this.setOp(this.INS_AND,0x21,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_AND,0x31,this.ADDR_POSTIDXIND,2,5); + + // ASL: + this.setOp(this.INS_ASL,0x0A,this.ADDR_ACC,1,2); + this.setOp(this.INS_ASL,0x06,this.ADDR_ZP,2,5); + this.setOp(this.INS_ASL,0x16,this.ADDR_ZPX,2,6); + this.setOp(this.INS_ASL,0x0E,this.ADDR_ABS,3,6); + this.setOp(this.INS_ASL,0x1E,this.ADDR_ABSX,3,7); + + // BCC: + this.setOp(this.INS_BCC,0x90,this.ADDR_REL,2,2); + + // BCS: + this.setOp(this.INS_BCS,0xB0,this.ADDR_REL,2,2); + + // BEQ: + this.setOp(this.INS_BEQ,0xF0,this.ADDR_REL,2,2); + + // BIT: + this.setOp(this.INS_BIT,0x24,this.ADDR_ZP,2,3); + this.setOp(this.INS_BIT,0x2C,this.ADDR_ABS,3,4); + + // BMI: + this.setOp(this.INS_BMI,0x30,this.ADDR_REL,2,2); + + // BNE: + this.setOp(this.INS_BNE,0xD0,this.ADDR_REL,2,2); + + // BPL: + this.setOp(this.INS_BPL,0x10,this.ADDR_REL,2,2); + + // BRK: + this.setOp(this.INS_BRK,0x00,this.ADDR_IMP,1,7); + + // BVC: + this.setOp(this.INS_BVC,0x50,this.ADDR_REL,2,2); + + // BVS: + this.setOp(this.INS_BVS,0x70,this.ADDR_REL,2,2); + + // CLC: + this.setOp(this.INS_CLC,0x18,this.ADDR_IMP,1,2); + + // CLD: + this.setOp(this.INS_CLD,0xD8,this.ADDR_IMP,1,2); + + // CLI: + this.setOp(this.INS_CLI,0x58,this.ADDR_IMP,1,2); + + // CLV: + this.setOp(this.INS_CLV,0xB8,this.ADDR_IMP,1,2); + + // CMP: + this.setOp(this.INS_CMP,0xC9,this.ADDR_IMM,2,2); + this.setOp(this.INS_CMP,0xC5,this.ADDR_ZP,2,3); + this.setOp(this.INS_CMP,0xD5,this.ADDR_ZPX,2,4); + this.setOp(this.INS_CMP,0xCD,this.ADDR_ABS,3,4); + this.setOp(this.INS_CMP,0xDD,this.ADDR_ABSX,3,4); + this.setOp(this.INS_CMP,0xD9,this.ADDR_ABSY,3,4); + this.setOp(this.INS_CMP,0xC1,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_CMP,0xD1,this.ADDR_POSTIDXIND,2,5); + + // CPX: + this.setOp(this.INS_CPX,0xE0,this.ADDR_IMM,2,2); + this.setOp(this.INS_CPX,0xE4,this.ADDR_ZP,2,3); + this.setOp(this.INS_CPX,0xEC,this.ADDR_ABS,3,4); + + // CPY: + this.setOp(this.INS_CPY,0xC0,this.ADDR_IMM,2,2); + this.setOp(this.INS_CPY,0xC4,this.ADDR_ZP,2,3); + this.setOp(this.INS_CPY,0xCC,this.ADDR_ABS,3,4); + + // DEC: + this.setOp(this.INS_DEC,0xC6,this.ADDR_ZP,2,5); + this.setOp(this.INS_DEC,0xD6,this.ADDR_ZPX,2,6); + this.setOp(this.INS_DEC,0xCE,this.ADDR_ABS,3,6); + this.setOp(this.INS_DEC,0xDE,this.ADDR_ABSX,3,7); + + // DEX: + this.setOp(this.INS_DEX,0xCA,this.ADDR_IMP,1,2); + + // DEY: + this.setOp(this.INS_DEY,0x88,this.ADDR_IMP,1,2); + + // EOR: + this.setOp(this.INS_EOR,0x49,this.ADDR_IMM,2,2); + this.setOp(this.INS_EOR,0x45,this.ADDR_ZP,2,3); + this.setOp(this.INS_EOR,0x55,this.ADDR_ZPX,2,4); + this.setOp(this.INS_EOR,0x4D,this.ADDR_ABS,3,4); + this.setOp(this.INS_EOR,0x5D,this.ADDR_ABSX,3,4); + this.setOp(this.INS_EOR,0x59,this.ADDR_ABSY,3,4); + this.setOp(this.INS_EOR,0x41,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_EOR,0x51,this.ADDR_POSTIDXIND,2,5); + + // INC: + this.setOp(this.INS_INC,0xE6,this.ADDR_ZP,2,5); + this.setOp(this.INS_INC,0xF6,this.ADDR_ZPX,2,6); + this.setOp(this.INS_INC,0xEE,this.ADDR_ABS,3,6); + this.setOp(this.INS_INC,0xFE,this.ADDR_ABSX,3,7); + + // INX: + this.setOp(this.INS_INX,0xE8,this.ADDR_IMP,1,2); + + // INY: + this.setOp(this.INS_INY,0xC8,this.ADDR_IMP,1,2); + + // JMP: + this.setOp(this.INS_JMP,0x4C,this.ADDR_ABS,3,3); + this.setOp(this.INS_JMP,0x6C,this.ADDR_INDABS,3,5); + + // JSR: + this.setOp(this.INS_JSR,0x20,this.ADDR_ABS,3,6); + + // LDA: + this.setOp(this.INS_LDA,0xA9,this.ADDR_IMM,2,2); + this.setOp(this.INS_LDA,0xA5,this.ADDR_ZP,2,3); + this.setOp(this.INS_LDA,0xB5,this.ADDR_ZPX,2,4); + this.setOp(this.INS_LDA,0xAD,this.ADDR_ABS,3,4); + this.setOp(this.INS_LDA,0xBD,this.ADDR_ABSX,3,4); + this.setOp(this.INS_LDA,0xB9,this.ADDR_ABSY,3,4); + this.setOp(this.INS_LDA,0xA1,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_LDA,0xB1,this.ADDR_POSTIDXIND,2,5); + + + // LDX: + this.setOp(this.INS_LDX,0xA2,this.ADDR_IMM,2,2); + this.setOp(this.INS_LDX,0xA6,this.ADDR_ZP,2,3); + this.setOp(this.INS_LDX,0xB6,this.ADDR_ZPY,2,4); + this.setOp(this.INS_LDX,0xAE,this.ADDR_ABS,3,4); + this.setOp(this.INS_LDX,0xBE,this.ADDR_ABSY,3,4); + + // LDY: + this.setOp(this.INS_LDY,0xA0,this.ADDR_IMM,2,2); + this.setOp(this.INS_LDY,0xA4,this.ADDR_ZP,2,3); + this.setOp(this.INS_LDY,0xB4,this.ADDR_ZPX,2,4); + this.setOp(this.INS_LDY,0xAC,this.ADDR_ABS,3,4); + this.setOp(this.INS_LDY,0xBC,this.ADDR_ABSX,3,4); + + // LSR: + this.setOp(this.INS_LSR,0x4A,this.ADDR_ACC,1,2); + this.setOp(this.INS_LSR,0x46,this.ADDR_ZP,2,5); + this.setOp(this.INS_LSR,0x56,this.ADDR_ZPX,2,6); + this.setOp(this.INS_LSR,0x4E,this.ADDR_ABS,3,6); + this.setOp(this.INS_LSR,0x5E,this.ADDR_ABSX,3,7); + + // NOP: + this.setOp(this.INS_NOP,0xEA,this.ADDR_IMP,1,2); + + // ORA: + this.setOp(this.INS_ORA,0x09,this.ADDR_IMM,2,2); + this.setOp(this.INS_ORA,0x05,this.ADDR_ZP,2,3); + this.setOp(this.INS_ORA,0x15,this.ADDR_ZPX,2,4); + this.setOp(this.INS_ORA,0x0D,this.ADDR_ABS,3,4); + this.setOp(this.INS_ORA,0x1D,this.ADDR_ABSX,3,4); + this.setOp(this.INS_ORA,0x19,this.ADDR_ABSY,3,4); + this.setOp(this.INS_ORA,0x01,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_ORA,0x11,this.ADDR_POSTIDXIND,2,5); + + // PHA: + this.setOp(this.INS_PHA,0x48,this.ADDR_IMP,1,3); + + // PHP: + this.setOp(this.INS_PHP,0x08,this.ADDR_IMP,1,3); + + // PLA: + this.setOp(this.INS_PLA,0x68,this.ADDR_IMP,1,4); + + // PLP: + this.setOp(this.INS_PLP,0x28,this.ADDR_IMP,1,4); + + // ROL: + this.setOp(this.INS_ROL,0x2A,this.ADDR_ACC,1,2); + this.setOp(this.INS_ROL,0x26,this.ADDR_ZP,2,5); + this.setOp(this.INS_ROL,0x36,this.ADDR_ZPX,2,6); + this.setOp(this.INS_ROL,0x2E,this.ADDR_ABS,3,6); + this.setOp(this.INS_ROL,0x3E,this.ADDR_ABSX,3,7); + + // ROR: + this.setOp(this.INS_ROR,0x6A,this.ADDR_ACC,1,2); + this.setOp(this.INS_ROR,0x66,this.ADDR_ZP,2,5); + this.setOp(this.INS_ROR,0x76,this.ADDR_ZPX,2,6); + this.setOp(this.INS_ROR,0x6E,this.ADDR_ABS,3,6); + this.setOp(this.INS_ROR,0x7E,this.ADDR_ABSX,3,7); + + // RTI: + this.setOp(this.INS_RTI,0x40,this.ADDR_IMP,1,6); + + // RTS: + this.setOp(this.INS_RTS,0x60,this.ADDR_IMP,1,6); + + // SBC: + this.setOp(this.INS_SBC,0xE9,this.ADDR_IMM,2,2); + this.setOp(this.INS_SBC,0xE5,this.ADDR_ZP,2,3); + this.setOp(this.INS_SBC,0xF5,this.ADDR_ZPX,2,4); + this.setOp(this.INS_SBC,0xED,this.ADDR_ABS,3,4); + this.setOp(this.INS_SBC,0xFD,this.ADDR_ABSX,3,4); + this.setOp(this.INS_SBC,0xF9,this.ADDR_ABSY,3,4); + this.setOp(this.INS_SBC,0xE1,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_SBC,0xF1,this.ADDR_POSTIDXIND,2,5); + + // SEC: + this.setOp(this.INS_SEC,0x38,this.ADDR_IMP,1,2); + + // SED: + this.setOp(this.INS_SED,0xF8,this.ADDR_IMP,1,2); + + // SEI: + this.setOp(this.INS_SEI,0x78,this.ADDR_IMP,1,2); + + // STA: + this.setOp(this.INS_STA,0x85,this.ADDR_ZP,2,3); + this.setOp(this.INS_STA,0x95,this.ADDR_ZPX,2,4); + this.setOp(this.INS_STA,0x8D,this.ADDR_ABS,3,4); + this.setOp(this.INS_STA,0x9D,this.ADDR_ABSX,3,5); + this.setOp(this.INS_STA,0x99,this.ADDR_ABSY,3,5); + this.setOp(this.INS_STA,0x81,this.ADDR_PREIDXIND,2,6); + this.setOp(this.INS_STA,0x91,this.ADDR_POSTIDXIND,2,6); + + // STX: + this.setOp(this.INS_STX,0x86,this.ADDR_ZP,2,3); + this.setOp(this.INS_STX,0x96,this.ADDR_ZPY,2,4); + this.setOp(this.INS_STX,0x8E,this.ADDR_ABS,3,4); + + // STY: + this.setOp(this.INS_STY,0x84,this.ADDR_ZP,2,3); + this.setOp(this.INS_STY,0x94,this.ADDR_ZPX,2,4); + this.setOp(this.INS_STY,0x8C,this.ADDR_ABS,3,4); + + // TAX: + this.setOp(this.INS_TAX,0xAA,this.ADDR_IMP,1,2); + + // TAY: + this.setOp(this.INS_TAY,0xA8,this.ADDR_IMP,1,2); + + // TSX: + this.setOp(this.INS_TSX,0xBA,this.ADDR_IMP,1,2); + + // TXA: + this.setOp(this.INS_TXA,0x8A,this.ADDR_IMP,1,2); + + // TXS: + this.setOp(this.INS_TXS,0x9A,this.ADDR_IMP,1,2); + + // TYA: + this.setOp(this.INS_TYA,0x98,this.ADDR_IMP,1,2); + + this.cycTable = new Array( + /*0x00*/ 7,6,2,8,3,3,5,5,3,2,2,2,4,4,6,6, + /*0x10*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7, + /*0x20*/ 6,6,2,8,3,3,5,5,4,2,2,2,4,4,6,6, + /*0x30*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7, + /*0x40*/ 6,6,2,8,3,3,5,5,3,2,2,2,3,4,6,6, + /*0x50*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7, + /*0x60*/ 6,6,2,8,3,3,5,5,4,2,2,2,5,4,6,6, + /*0x70*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7, + /*0x80*/ 2,6,2,6,3,3,3,3,2,2,2,2,4,4,4,4, + /*0x90*/ 2,6,2,6,4,4,4,4,2,5,2,5,5,5,5,5, + /*0xA0*/ 2,6,2,6,3,3,3,3,2,2,2,2,4,4,4,4, + /*0xB0*/ 2,5,2,5,4,4,4,4,2,4,2,4,4,4,4,4, + /*0xC0*/ 2,6,2,8,3,3,5,5,2,2,2,2,4,4,6,6, + /*0xD0*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7, + /*0xE0*/ 2,6,3,8,3,3,5,5,2,2,2,2,4,4,6,6, + /*0xF0*/ 2,5,2,8,4,4,6,6,2,4,2,7,4,4,7,7 + ); + + + this.instname = new Array(56); + + // Instruction Names: + this.instname[ 0] = "ADC"; + this.instname[ 1] = "AND"; + this.instname[ 2] = "ASL"; + this.instname[ 3] = "BCC"; + this.instname[ 4] = "BCS"; + this.instname[ 5] = "BEQ"; + this.instname[ 6] = "BIT"; + this.instname[ 7] = "BMI"; + this.instname[ 8] = "BNE"; + this.instname[ 9] = "BPL"; + this.instname[10] = "BRK"; + this.instname[11] = "BVC"; + this.instname[12] = "BVS"; + this.instname[13] = "CLC"; + this.instname[14] = "CLD"; + this.instname[15] = "CLI"; + this.instname[16] = "CLV"; + this.instname[17] = "CMP"; + this.instname[18] = "CPX"; + this.instname[19] = "CPY"; + this.instname[20] = "DEC"; + this.instname[21] = "DEX"; + this.instname[22] = "DEY"; + this.instname[23] = "EOR"; + this.instname[24] = "INC"; + this.instname[25] = "INX"; + this.instname[26] = "INY"; + this.instname[27] = "JMP"; + this.instname[28] = "JSR"; + this.instname[29] = "LDA"; + this.instname[30] = "LDX"; + this.instname[31] = "LDY"; + this.instname[32] = "LSR"; + this.instname[33] = "NOP"; + this.instname[34] = "ORA"; + this.instname[35] = "PHA"; + this.instname[36] = "PHP"; + this.instname[37] = "PLA"; + this.instname[38] = "PLP"; + this.instname[39] = "ROL"; + this.instname[40] = "ROR"; + this.instname[41] = "RTI"; + this.instname[42] = "RTS"; + this.instname[43] = "SBC"; + this.instname[44] = "SEC"; + this.instname[45] = "SED"; + this.instname[46] = "SEI"; + this.instname[47] = "STA"; + this.instname[48] = "STX"; + this.instname[49] = "STY"; + this.instname[50] = "TAX"; + this.instname[51] = "TAY"; + this.instname[52] = "TSX"; + this.instname[53] = "TXA"; + this.instname[54] = "TXS"; + this.instname[55] = "TYA"; + + this.addrDesc = new Array( + "Zero Page ", + "Relative ", + "Implied ", + "Absolute ", + "Accumulator ", + "Immediate ", + "Zero Page,X ", + "Zero Page,Y ", + "Absolute,X ", + "Absolute,Y ", + "Preindexed Indirect ", + "Postindexed Indirect", + "Indirect Absolute " + ); +} + +NES.CPU.OpData.prototype = { + INS_ADC: 0, + INS_AND: 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+a.insertBefore(b,a.firstChild);d=b.firstChild;f=d.firstChild;e=d.nextSibling.firstChild.firstChild;this.doesNotAddBorder=f.offsetTop!==5;this.doesAddBorderForTableAndCells=e.offsetTop===5;f.style.position="fixed";f.style.top="20px";this.supportsFixedPosition=f.offsetTop===20||f.offsetTop===15;f.style.position=f.style.top="";d.style.overflow="hidden";d.style.position="relative";this.subtractsBorderForOverflowNotVisible=f.offsetTop===-5;this.doesNotIncludeMarginInBodyOffset=a.offsetTop!==j;a.removeChild(b); +c.offset.initialize=c.noop},bodyOffset:function(a){var b=a.offsetTop,d=a.offsetLeft;c.offset.initialize();if(c.offset.doesNotIncludeMarginInBodyOffset){b+=parseFloat(c.curCSS(a,"marginTop",true))||0;d+=parseFloat(c.curCSS(a,"marginLeft",true))||0}return{top:b,left:d}},setOffset:function(a,b,d){if(/static/.test(c.curCSS(a,"position")))a.style.position="relative";var 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f==="string"?f:f+"px")}});A.jQuery=A.$=c})(window); diff --git a/js.2/jquery.dimensions.min.js b/js.2/jquery.dimensions.min.js new file mode 100644 index 0000000..34c06de --- /dev/null +++ b/js.2/jquery.dimensions.min.js @@ -0,0 +1,12 @@ +/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net) + * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) + * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. + * + * $LastChangedDate: 2007-12-20 08:43:48 -0600 (Thu, 20 Dec 2007) $ + * $Rev: 4257 $ + * + * Version: 1.2 + * + * Requires: jQuery 1.2+ + */ +(function($){$.dimensions={version:'1.2'};$.each(['Height','Width'],function(i,name){$.fn['inner'+name]=function(){if(!this[0])return;var torl=name=='Height'?'Top':'Left',borr=name=='Height'?'Bottom':'Right';return 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\ No newline at end of file diff --git a/js.2/keyboard.js b/js.2/keyboard.js new file mode 100644 index 0000000..46b5632 --- /dev/null +++ b/js.2/keyboard.js @@ -0,0 +1,68 @@ + +NES.Keyboard = function() { + this.keys = { + KEY_A: 0, + KEY_B: 1, + KEY_SELECT: 2, + KEY_START: 3, + KEY_UP: 4, + KEY_DOWN: 5, + KEY_LEFT: 6, + KEY_RIGHT: 7 + }; + + this.state1 = Array(8); + for (var i = 0; i < this.state1.length; i++) { + this.state1[i] = 0x40; + } + this.state2 = Array(8); + for (var i = 0; i < this.state2.length; i++) { + this.state2[i] = 0x40; + } + + var self = this; + $(document) + .bind('keydown', function(evt) {self.keyDown(evt)}) + .bind('keyup', function(evt) {self.keyUp(evt)}) + .bind('keypress', function(evt) {self.keyPress(evt)}); +} + +NES.Keyboard.prototype = { + setKey: function(key, value) { + switch (key) { + case 88: this.state1[this.keys.KEY_A] = value; break; // X + case 90: this.state1[this.keys.KEY_B] = value; break; // Z + case 17: this.state1[this.keys.KEY_SELECT] = value; break; // Right Ctrl + case 13: this.state1[this.keys.KEY_START] = value; break; // Enter + case 38: this.state1[this.keys.KEY_UP] = value; break; // Up + case 40: this.state1[this.keys.KEY_DOWN] = value; break; // Down + case 37: this.state1[this.keys.KEY_LEFT] = value; break; // Left + case 39: this.state1[this.keys.KEY_RIGHT] = value; break; // Right + + case 103: this.state2[this.keys.KEY_A] = value; break; // Num-7 + case 105: this.state2[this.keys.KEY_B] = value; break; // Num-9 + case 99: this.state2[this.keys.KEY_SELECT] = value; break; // Num-3 + case 97: this.state2[this.keys.KEY_START] = value; break; // Num-1 + case 104: this.state2[this.keys.KEY_UP] = value; break; // Num-8 + case 98: this.state2[this.keys.KEY_DOWN] = value; break; // Num-2 + case 100: this.state2[this.keys.KEY_LEFT] = value; break; // Num-4 + case 102: this.state2[this.keys.KEY_RIGHT] = value; break; // Num-6 + default: return true; + } + return false; // preventDefault + }, + + keyDown: function(evt) { + if (!this.setKey(evt.keyCode, 0x41) && evt.preventDefault) + evt.preventDefault(); + }, + + keyPress: function(evt) { + evt.preventDefault(); + }, + + keyUp: function(evt) { + if (!this.setKey(evt.keyCode, 0x40) && evt.preventDefault) + evt.preventDefault(); + } +} diff --git a/js.2/mappers.js b/js.2/mappers.js new file mode 100644 index 0000000..9530473 --- /dev/null +++ b/js.2/mappers.js @@ -0,0 +1,1048 @@ +NES.Mappers = {}; + +NES.Mappers[0] = function(nes) { + this.nes = nes; +} + +NES.Mappers[0].prototype = { + reset: function() { + this.joy1StrobeState = 0; + this.joy2StrobeState = 0; + this.joypadLastWrite = 0; + + this.mousePressed = false; + this.mouseX = null; + this.mouseY = null; + }, + + write: function(address, value) { + if (address < 0x2000) { + // Mirroring of RAM: + this.nes.cpu.mem[address & 0x7FF] = value; + + } + else if (address > 0x4017) { + this.nes.cpu.mem[address] = value; + if (address >= 0x6000 && address < 0x8000) { + // Write to SaveRAM. Store in file: + // TODO: not yet + //if(this.nes.rom!=null) + // this.nes.rom.writeBatteryRam(address,value); + } + } + else if (address > 0x2007 && address < 0x4000) { + this.regWrite(0x2000 + (address & 0x7), value); + } + else { + this.regWrite(address,value); + } + }, + + load: function(address) { + // Wrap around: + address &= 0xFFFF; + + // Check address range: + if (address > 0x4017) { + // ROM: + return this.nes.cpu.mem[address]; + } + else if (address >= 0x2000) { + // I/O Ports. + return this.regLoad(address); + } + else { + // RAM (mirrored) + return this.nes.cpu.mem[address&0x7FF]; + } + }, + + regLoad: function(address) { + switch (address >> 12) { // use fourth nibble (0xF000) + case 0: { + break; + } + case 1: { + break; + } + case 2: { + // Fall through to case 3 + } + case 3:{ + // PPU Registers + switch (address&0x7) { + case 0x0: { + // 0x2000: + // PPU Control Register 1. + // (the value is stored both + // in main memory and in the + // PPU as flags): + // (not in the real NES) + return this.nes.cpu.mem[0x2000]; + } + case 0x1: { + // 0x2001: + // PPU Control Register 2. + // (the value is stored both + // in main memory and in the + // PPU as flags): + // (not in the real NES) + return this.nes.cpu.mem[0x2001]; + } + case 0x2:{ + + // 0x2002: + // PPU Status Register. + // The value is stored in + // main memory in addition + // to as flags in the PPU. + // (not in the real NES) + return this.nes.ppu.readStatusRegister(); + + } + case 0x3:{ + return 0; + } + case 0x4:{ + + // 0x2004: + // Sprite Memory read. + return this.nes.ppu.sramLoad(); + + } + case 0x5:{ + return 0; + } + case 0x6:{ + return 0; + } + case 0x7:{ + // 0x2007: + // VRAM read: + return this.nes.ppu.vramLoad(); + } + } + break; + + } + case 4:{ + // Sound+Joypad registers + switch (address-0x4015) { + case 0:{ + + // 0x4015: + // Sound channel enable, DMC Status + return this.nes.papu.readReg(address); + + }case 1:{ + + // 0x4016: + // Joystick 1 + Strobe + return this.joy1Read(); + + }case 2:{ + + // 0x4017: + // Joystick 2 + Strobe + if (this.mousePressed) { + + // Check for white pixel nearby: + + var sx = Math.max(0,this.mouseX-4); + var ex = Math.min(256,this.mouseX+4); + var sy = Math.max(0,this.mouseY-4); + var ey = Math.min(240,this.mouseY+4); + var w = 0; + + for(var y=sy; y<ey; y++){ + for(var x=sx; x<ex; x++){ + + if (this.nes.ppu.buffer[(y<<8)+x] == 0xFFFFFF) { + w |= 0x1<<3; + console.debug("Clicked on white!"); + break; + } + } + } + + w |= (this.mousePressed?(0x1<<4):0); + return (this.joy2Read()|w) & 0xFFFF; + } + else { + return this.joy2Read(); + } + + } + } + + break; + + } + } + return 0; + }, + + regWrite: function(address, value) { + switch (address) { + case 0x2000:{ + + // PPU Control register 1 + this.nes.cpu.mem[address] = value; + this.nes.ppu.updateControlReg1(value); + break; + + }case 0x2001:{ + + // PPU Control register 2 + this.nes.cpu.mem[address] = value; + this.nes.ppu.updateControlReg2(value); + break; + + }case 0x2003:{ + + // Set Sprite RAM address: + this.nes.ppu.writeSRAMAddress(value); + break; + + }case 0x2004:{ + + // Write to Sprite RAM: + this.nes.ppu.sramWrite(value); + break; + + }case 0x2005:{ + + // Screen Scroll offsets: + this.nes.ppu.scrollWrite(value); + break; + + }case 0x2006:{ + + // Set VRAM address: + this.nes.ppu.writeVRAMAddress(value); + break; + + }case 0x2007:{ + + // Write to VRAM: + this.nes.ppu.vramWrite(value); + break; + + }case 0x4014:{ + + // Sprite Memory DMA Access + this.nes.ppu.sramDMA(value); + break; + + }case 0x4015:{ + + // Sound Channel Switch, DMC Status + this.nes.papu.writeReg(address,value); + break; + + }case 0x4016:{ + + ////System.out.println("joy strobe write "+value); + + // Joystick 1 + Strobe + if (value==0 && this.joypadLastWrite==1) { + ////System.out.println("Strobes reset."); + this.joy1StrobeState = 0; + this.joy2StrobeState = 0; + } + this.joypadLastWrite = value; + break; + + }case 0x4017:{ + + // Sound channel frame sequencer: + this.nes.papu.writeReg(address,value); + break; + + }default:{ + + // Sound registers + ////System.out.println("write to sound reg"); + if (address >= 0x4000 && address <= 0x4017) { + this.nes.papu.writeReg(address,value); + } + break; + + } + } + + }, + + joy1Read: function() { + var ret; + + switch (this.joy1StrobeState) { + case 0: + case 1: + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + ret = this.nes.keyboard.state1[this.joy1StrobeState]; + break; + case 8: + case 9: + case 10: + case 11: + case 12: + case 13: + case 14: + case 15: + case 16: + case 17: + case 18: + ret = 0; + break; + case 19: + ret = 1; + break; + default: + ret = 0; + } + + this.joy1StrobeState++; + if (this.joy1StrobeState == 24) { + this.joy1StrobeState = 0; + } + + return ret; + + }, + + joy2Read: function() { + var ret; + + this.joy2StrobeState++; + if (this.joy2StrobeState == 24) { + this.joy2StrobeState = 0; + } + + switch (this.joy2StrobeState) { + case 0: + case 1: + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + ret = this.nes.keyboard.state2[this.joy2StrobeState]; + break; + case 8: + case 9: + case 10: + case 11: + case 12: + case 13: + case 14: + case 15: + case 16: + case 17: + ret = 0; + break; + case 18: + ret = 1; + break; + default: + ret = 0; + } + + return ret; + }, + + loadROM: function() { + if (!this.nes.rom.valid || this.nes.rom.romCount<1) { + alert("NoMapper: Invalid ROM! Unable to load."); + return; + } + + // Load ROM into memory: + this.loadPRGROM(); + + // Load CHR-ROM: + this.loadCHRROM(); + + // Load Battery RAM (if present): + this.loadBatteryRam(); + + // Reset IRQ: + //nes.getCpu().doResetInterrupt(); + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_RESET); + + }, + + loadPRGROM: function() { + if (this.nes.rom.romCount>1) { + // Load the two first banks into memory. + this.loadRomBank(0,0x8000); + this.loadRomBank(1,0xC000); + }else { + // Load the one bank into both memory locations: + this.loadRomBank(0,0x8000); + this.loadRomBank(0,0xC000); + } + }, + + loadCHRROM: function() { + ////System.out.println("Loading CHR ROM.."); + if (this.nes.rom.vromCount > 0) { + if (this.nes.rom.vromCount == 1) { + this.loadVromBank(0,0x0000); + this.loadVromBank(0,0x1000); + }else { + this.loadVromBank(0,0x0000); + this.loadVromBank(1,0x1000); + } + }else { + //System.out.println("There aren't any CHR-ROM banks.."); + } + }, + + loadBatteryRam: function() { + if (this.nes.rom.batteryRam) { + var ram = this.nes.rom.batteryRam; + if (ram!=null && ram.length==0x2000) { + // Load Battery RAM into memory: + NES.Utils.arraycopy(ram, 0, this.nes.cpu.mem, 0x6000, 0x2000); + } + } + }, + + loadRomBank: function(bank, address) { + // Loads a ROM bank into the specified address. + bank %= this.nes.rom.romCount; + //var data = this.nes.rom.rom[bank]; + //cpuMem.write(address,data,data.length); + NES.Utils.arraycopy(this.nes.rom.rom[bank], 0, this.nes.cpu.mem, address, 16384); + }, + + loadVromBank: function(bank, address) { + if (this.nes.rom.vromCount == 0) { + return; + } + this.nes.ppu.triggerRendering(); + + NES.Utils.arraycopy(this.nes.rom.vrom[bank%this.nes.rom.vromCount], 0, + this.nes.ppu.vramMem, address, 4096); + + var vromTile = this.nes.rom.vromTile[bank%this.nes.rom.vromCount]; + NES.Utils.arraycopy(vromTile, 0, this.nes.ppu.ptTile,address >> 4, 256); + }, + + load32kRomBank: function(bank, address) { + this.loadRomBank((bank*2) % this.nes.rom.romCount, address); + this.loadRomBank((bank*2+1) % this.nes.rom.romCount, address+16384); + }, + + load8kVromBank: function(bank4kStart, address) { + if (this.nes.rom.vromCount == 0) { + return; + } + this.nes.ppu.triggerRendering(); + + this.loadVromBank((bank4kStart)%this.nes.rom.vromCount,address); + this.loadVromBank((bank4kStart+1)%this.nes.rom.vromCount,address+4096); + }, + + load1kVromBank: function(bank1k, address) { + if (this.nes.rom.vromCount == 0) { + return; + } + this.nes.ppu.triggerRendering(); + + var bank4k = parseInt(bank1k/4) % this.nes.rom.vromCount; + var bankoffset = (bank1k%4)*1024; + NES.Utils.arraycopy(this.nes.rom.vrom[bank4k], 0, this.nes.ppu.vramMem, + bankoffset, 1024); + + // Update tiles: + var vromTile = this.nes.rom.vromTile[bank4k]; + var baseIndex = address >> 4; + for (var i=0;i<64;i++) { + this.nes.ppu.ptTile[baseIndex+i] = vromTile[((bank1k%4)<<6)+i]; + } + }, + + load2kVromBank: function(bank2k, address) { + if (this.nes.rom.vromCount == 0) { + return; + } + this.nes.ppu.triggerRendering(); + + var bank4k = parseInt(bank2k/2)%this.nes.rom.vromCount; + var bankoffset = (bank2k%2)*2048; + NES.Utils.arraycopy(this.nes.rom.vrom[bank4k], bankoffset, + this.nes.ppu.vramMem, address, 2048); + + // Update tiles: + var vromTile = this.nes.rom.vromTile[bank4k]; + var baseIndex = address >> 4; + for(var i=0;i<128;i++){ + this.nes.ppu.ptTile[baseIndex+i] = vromTile[((bank2k%2)<<7)+i]; + } + }, + + load8kRomBank: function(bank8k, address) { + + var bank16k = parseInt(bank8k/2)%this.nes.rom.romCount; + var offset = (bank8k%2)*8192; + + //this.nes.cpu.mem.write(address,this.nes.rom.rom[bank16k],offset,8192); + NES.Utils.arraycopy(this.nes.rom.rom[bank16k], offset, + this.nes.cpu.mem, address, 8192); + }, + + clockIrqCounter: function() { + // Does nothing. This is used by the MMC3 mapper. + }, + + latchAccess: function(address) { + // Does nothing. This is used by MMC2. + } +} + +NES.Mappers[1] = function(nes) { + this.nes = nes; +} + +NES.Utils.copyPrototype(NES.Mappers[1], NES.Mappers[0]); + +NES.Mappers[1].prototype = { + reset: function() { + NES.Mappers[0].prototype.reset.apply(this); + + // 5-bit buffer: + this.regBuffer = 0; + this.regBufferCounter = 0; + + // Register 0: + this.mirroring = 0; + this.oneScreenMirroring = 0; + this.prgSwitchingArea = 1; + this.prgSwitchingSize = 1; + this.vromSwitchingSize = 0; + + // Register 1: + this.romSelectionReg0 = 0; + + // Register 2: + this.romSelectionReg1 = 0; + + // Register 3: + this.romBankSelect = 0; + }, + + write: function(address, value) { + // Writes to addresses other than MMC registers are handled by NoMapper. + if (address < 0x8000) { + MapperDefault.prototype.write.apply(this, arguments); + return; + } + + // See what should be done with the written value: + if ((value&128)!=0) { + + // Reset buffering: + this.regBufferCounter = 0; + this.regBuffer = 0; + + // Reset register: + if (this.getRegNumber(address) == 0) { + + this.prgSwitchingArea = 1; + this.prgSwitchingSize = 1; + + } + } + else { + + // Continue buffering: + //regBuffer = (regBuffer & (0xFF-(1<<regBufferCounter))) | ((value & (1<<regBufferCounter))<<regBufferCounter); + this.regBuffer = (this.regBuffer & (0xFF-(1<<this.regBufferCounter))) | ((value&1)<<this.regBufferCounter); + this.regBufferCounter++; + if (this.regBufferCounter == 5) { + + // Use the buffered value: + this.setReg(this.getRegNumber(address), this.regBuffer); + + // Reset buffer: + this.regBuffer = 0; + this.regBufferCounter = 0; + + } + } + }, + + setReg: function(reg, value) { + var tmp, tmp2; + + switch (reg) { + case 0: + // Mirroring: + tmp = value&3; + if (tmp != this.mirroring) { + // Set mirroring: + this.mirroring = tmp; + if ((this.mirroring & 2)==0) { + // SingleScreen mirroring overrides the other setting: + this.nes.ppu.setMirroring( + this.nes.rom.SINGLESCREEN_MIRRORING); + }else { + // Not overridden by SingleScreen mirroring. + this.nes.ppu.setMirroring( + (this.mirroring&1)!=0 ? + this.nes.rom.HORIZONTAL_MIRRORING + : + this.nes.rom.VERTICAL_MIRRORING); + } + } + + // PRG Switching Area; + this.prgSwitchingArea = (value>>2)&1; + + // PRG Switching Size: + this.prgSwitchingSize = (value>>3)&1; + + // VROM Switching Size: + this.vromSwitchingSize = (value>>4)&1; + + break; + + case 1: + // ROM selection: + this.romSelectionReg0 = (value>>4)&1; + + // Check whether the cart has VROM: + if (this.nes.rom.vromCount > 0) { + + // Select VROM bank at 0x0000: + if (this.vromSwitchingSize == 0) { + + // Swap 8kB VROM: + ////System.out.println("Swapping 8k VROM, bank="+(value&0xF)+" romSelReg="+romSelectionReg0); + if (this.romSelectionReg0==0) { + this.load8kVromBank((value&0xF), 0x0000); + }else { + this.load8kVromBank( + parseInt(this.nes.rom.vromCount/2) + (value&0xF), + 0x0000); + } + + } + else { + // Swap 4kB VROM: + + if (this.romSelectionReg0 == 0) { + this.loadVromBank((value&0xF), 0x0000); + } + else { + this.loadVromBank( + parseInt(this.nes.rom.vromCount/2)+(value&0xF), + 0x0000); + } + } + } + + break; + + case 2: + // ROM selection: + this.romSelectionReg1 = (value>>4)&1; + + // Check whether the cart has VROM: + if (this.nes.rom.vromCount > 0) { + + // Select VROM bank at 0x1000: + if (this.vromSwitchingSize == 1) { + + // Swap 4kB of VROM: + ////System.out.println("ROMSELREG1 = "+romSelectionReg1); + ////System.out.println("Swapping 4k VROM at 0x1000, bank="+(value&0xF)); + if (this.romSelectionReg1 == 0) { + this.loadVromBank((value&0xF),0x1000); + }else { + this.loadVromBank( + parseInt(this.nes.rom.vromCount/2)+(value&0xF), + 0x1000); + } + + } + + } + + default: + // Select ROM bank: + // ------------------------- + tmp = value & 0xF; + var bank; + var baseBank = 0; + + if (this.nes.rom.romCount >= 32) { + + // 1024 kB cart + if (this.vromSwitchingSize == 0) { + if (this.romSelectionReg0 == 1) { + baseBank = 16; + } + } + else { + baseBank = (this.romSelectionReg0 + | (this.romSelectionReg1<<1))<<3; + } + } + else if (this.nes.rom.romCount >= 16) { + // 512 kB cart + if (this.romSelectionReg0 == 1) { + baseBank = 8; + } + } + + if (this.prgSwitchingSize == 0) { + // 32kB + bank = baseBank+(value&0xF); + this.load32kRomBank(bank, 0x8000); + } + else { + // 16kB + bank = baseBank*2+(value&0xF); + if (this.prgSwitchingArea == 0) { + this.loadRomBank(bank, 0xC000); + }else { + this.loadRomBank(bank, 0x8000); + } + } + } + }, + + // Returns the register number from the address written to: + getRegNumber: function(address) { + if (address>=0x8000 && address<=0x9FFF) { + return 0; + } + else if (address>=0xA000 && address<=0xBFFF) { + return 1; + } + else if (address>=0xC000 && address<=0xDFFF) { + return 2; + } + else { + return 3; + } + }, + + loadROM: function(rom) { + if (!this.nes.rom.valid) { + alert("MMC1: Invalid ROM! Unable to load."); + return; + } + + // Load PRG-ROM: + this.loadRomBank(0,0x8000); // First ROM bank.. + this.loadRomBank(this.nes.rom.romCount-1,0xC000); // ..and last ROM bank. + + // Load CHR-ROM: + this.loadCHRROM(); + + // Load Battery RAM (if present): + this.loadBatteryRam(); + + // Do Reset-Interrupt: + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_RESET); + }, + + switchLowHighPrgRom: function(oldSetting) { + // not yet. + }, + + switch16to32: function() { + // not yet. + }, + + switch32to16: function() { + // not yet. + } +} + +NES.Mappers[2] = function(nes) { + this.nes = nes +} + +NES.Utils.copyPrototype(NES.Mappers[2], NES.Mappers[0]); + +NES.Mappers[2].prototype = { + write: function(address, value) { + // Writes to addresses other than MMC registers are handled by NoMapper. + if (address < 0x8000) { + MapperDefault.prototype.write.apply(this, arguments); + return; + } + + else { + + // This is a ROM bank select command. + // Swap in the given ROM bank at 0x8000: + this.loadRomBank(value, 0x8000); + + } + }, + + loadROM: function(rom) { + if (!this.nes.rom.valid) { + alert("UNROM: Invalid ROM! Unable to load."); + return; + } + + // Load PRG-ROM: + this.loadRomBank(0, 0x8000); + this.loadRomBank(this.nes.rom.romCount - 1, 0xC000); + + // Load CHR-ROM: + this.loadCHRROM(); + + // Do Reset-Interrupt: + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_RESET); + } +} + +NES.Mappers[4] = function(nes) { + this.nes = nes + + this.CMD_SEL_2_1K_VROM_0000 = 0; + this.CMD_SEL_2_1K_VROM_0800 = 1; + this.CMD_SEL_1K_VROM_1000 = 2; + this.CMD_SEL_1K_VROM_1400 = 3; + this.CMD_SEL_1K_VROM_1800 = 4; + this.CMD_SEL_1K_VROM_1C00 = 5; + this.CMD_SEL_ROM_PAGE1 = 6; + this.CMD_SEL_ROM_PAGE2 = 7; + + this.command = null; + this.prgAddressSelect = null; + this.chrAddressSelect = null; + this.pageNumber = null; + this.irqCounter = null; + this.irqLatchValue = null; + this.irqEnable = null; + this.prgAddressChanged = false; +} + +NES.Utils.copyPrototype(NES.Mappers[4], NES.Mappers[0]); + +NES.Mappers[4].prototype = { + write: function(address, value) { + // Writes to addresses other than MMC registers are handled by NoMapper. + if (address < 0x8000) { + NES.Mappers[0].prototype.write.apply(this, arguments); + return; + } + + switch (address) { + case 0x8000: + // Command/Address Select register + this.command = value & 7; + var tmp = (value >> 6) & 1; + if (tmp != this.prgAddressSelect) { + this.prgAddressChanged = true; + } + this.prgAddressSelect = tmp; + this.chrAddressSelect = (value>>7)&1; + break; + + case 0x8001: + // Page number for command + this.executeCommand(this.command, value); + break; + + case 0xA000: + // Mirroring select + if ((value&1) != 0) { + this.nes.ppu.setMirroring( + this.nes.rom.HORIZONTAL_MIRRORING + ); + } + else { + this.nes.ppu.setMirroring(this.nes.rom.VERTICAL_MIRRORING); + } + break; + + case 0xA001: + // SaveRAM Toggle + // TODO + //nes.getRom().setSaveState((value&1)!=0); + break; + + case 0xC000: + // IRQ Counter register + this.irqCounter = value; + //nes.ppu.mapperIrqCounter = 0; + break; + + case 0xC001: + // IRQ Latch register + this.irqLatchValue = value; + break; + + case 0xE000: + // IRQ Control Reg 0 (disable) + //irqCounter = irqLatchValue; + this.irqEnable = 0; + break; + + case 0xE001: + // IRQ Control Reg 1 (enable) + this.irqEnable = 1; + break; + + default: + // Not a MMC3 register. + // The game has probably crashed, + // since it tries to write to ROM.. + // IGNORE. + } + }, + + executeCommand: function(cmd, arg) { + switch (cmd) { + case this.CMD_SEL_2_1K_VROM_0000: + // Select 2 1KB VROM pages at 0x0000: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg, 0x0000); + this.load1kVromBank(arg+1, 0x0400); + } + else { + this.load1kVromBank(arg, 0x1000); + this.load1kVromBank(arg+1, 0x1400); + } + break; + + case this.CMD_SEL_2_1K_VROM_0800: + // Select 2 1KB VROM pages at 0x0800: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg, 0x0800); + this.load1kVromBank(arg+1, 0x0C00); + } + else { + this.load1kVromBank(arg, 0x1800); + this.load1kVromBank(arg+1, 0x1C00); + } + break; + + case this.CMD_SEL_1K_VROM_1000: + // Select 1K VROM Page at 0x1000: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg,0x1000); + } + else { + this.load1kVromBank(arg,0x0000); + } + break; + + case this.CMD_SEL_1K_VROM_1400: + // Select 1K VROM Page at 0x1400: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg,0x1400); + } + else { + this.load1kVromBank(arg,0x0400); + } + break; + + case this.CMD_SEL_1K_VROM_1800: + // Select 1K VROM Page at 0x1800: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg,0x1800); + } + else { + this.load1kVromBank(arg,0x0800); + } + break; + + case this.CMD_SEL_1K_VROM_1C00: + // Select 1K VROM Page at 0x1C00: + if (this.chrAddressSelect == 0) { + this.load1kVromBank(arg,0x1C00); + }else { + this.load1kVromBank(arg,0x0C00); + } + break; + + case this.CMD_SEL_ROM_PAGE1: + if (this.prgAddressChanged) { + // Load the two hardwired banks: + if (this.prgAddressSelect == 0) { + this.load8kRomBank( + ((this.nes.rom.romCount-1)*2), + 0xC000); + } + else { + this.load8kRomBank( + ((this.nes.rom.romCount-1)*2), + 0x8000); + } + this.prgAddressChanged = false; + } + + // Select first switchable ROM page: + if (this.prgAddressSelect == 0) { + this.load8kRomBank(arg,0x8000); + } + else { + this.load8kRomBank(arg,0xC000); + } + break; + + case this.CMD_SEL_ROM_PAGE2: + // Select second switchable ROM page: + this.load8kRomBank(arg,0xA000); + + // hardwire appropriate bank: + if (this.prgAddressChanged) { + // Load the two hardwired banks: + if (this.prgAddressSelect == 0) { + this.load8kRomBank( + ((this.nes.rom.romCount-1)*2), + 0xC000 + ); + } + else { + this.load8kRomBank( + ((this.nes.rom.romCount-1)*2), + 0x8000 + ); + } + this.prgAddressChanged = false; + } + } + }, + + loadROM: function(rom) { + if (!this.nes.rom.valid) { + alert("MMC3: Invalid ROM! Unable to load."); + return; + } + + // Load hardwired PRG banks (0xC000 and 0xE000): + this.load8kRomBank(((this.nes.rom.romCount-1)*2), 0xC000); + this.load8kRomBank(((this.nes.rom.romCount-1)*2)+1, 0xE000); + + // Load swappable PRG banks (0x8000 and 0xA000): + this.load8kRomBank(0,0x8000); + this.load8kRomBank(1,0xA000); + + // Load CHR-ROM: + this.loadCHRROM(); + + // Load Battery RAM (if present): + this.loadBatteryRam(); + + // Do Reset-Interrupt: + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_RESET); + } +} diff --git a/js.2/nes.js b/js.2/nes.js new file mode 100644 index 0000000..6b55d92 --- /dev/null +++ b/js.2/nes.js @@ -0,0 +1,208 @@ + +function NES() { + this.opts = { + preferredFrameRate: 60, + fpsInterval: 500, // Time between updating FPS in ms + showDisplay: true, + + emulateSound: false, + sampleRate: 44100, // Sound sample rate in hz + + CPU_FREQ_NTSC: 1789772.5,//1789772.72727272d; + CPU_FREQ_PAL: 1773447.4, + } + this.frameTime = 1000/this.opts.preferredFrameRate; + + this.cpu = new NES.CPU(this); + this.ppu = new NES.PPU(this); + this.papu = new NES.PAPU(this); + this.mmap = null; // set in loadRom() + this.keyboard = new NES.Keyboard(); + + $("#status").text("Initialised. Ready to load a ROM."); +} + + +NES.prototype = { + isRunning: false, + fpsFrameCount: 0, + limitFrames: true, + + // Resets the system. + reset: function() { + if(this.mmap != null) { + this.mmap.reset(); + } + + this.cpu.reset(); + this.ppu.reset(); + this.papu.reset(); + }, + + start: function() { + var self = this; + + if(this.rom != null && this.rom.valid) { + if (!this.isRunning) { + //$("#status").text("Running "+this.romFile) + this.isRunning = true; + + this.frameInterval = setInterval(function() { + self.frame(); + }, this.frameTime/2); + this.resetFps(); + this.printFps(); + this.fpsInterval = setInterval(function() { + self.printFps(); + }, this.opts.fpsInterval); + } + } + else { + alert("There is no ROM loaded, or it is invalid."); + } + }, + + frame: function() { + this.ppu.startFrame(); + var cycles = 0; + var emulateSound = nes.opts.emulateSound; + var cpu = this.cpu; + var ppu = this.ppu; + var papu = this.papu; + FRAMELOOP: for (;;) { + if (cpu.cyclesToHalt == 0) { + // Execute a CPU instruction + cycles = cpu.emulate(); + if (emulateSound) { + papu.clockFrameCounter(cycles); + } + cycles *= 3; + } + else { + if (cpu.cyclesToHalt > 8) { + cycles = 24; + if (emulateSound) { + papu.clockFrameCounter(8); + } + cpu.cyclesToHalt -= 8; + } + else { + cycles = cpu.cyclesToHalt * 3; + if (emulateSound) { + papu.clockFrameCounter(cpu.cyclesToHalt); + } + cpu.cyclesToHalt = 0; + } + } + + for(;cycles>0;cycles--){ + + if(ppu.curX == ppu.spr0HitX + && ppu.f_spVisibility==1 + && ppu.scanline-21 == ppu.spr0HitY){ + // Set sprite 0 hit flag: + ppu.setStatusFlag(ppu.STATUS_SPRITE0HIT,true); + } + + if(ppu.requestEndFrame){ + ppu.nmiCounter--; + if(ppu.nmiCounter == 0){ + ppu.requestEndFrame = false; + ppu.startVBlank(); + break FRAMELOOP; + } + } + + ppu.curX++; + if(ppu.curX==341){ + ppu.curX = 0; + ppu.endScanline(); + } + + } + } + if (this.limitFrames) { + if (this.lastFrameTime) { + while ((new Date()).getTime() - this.lastFrameTime < this.frameTime) { + // twiddle thumbs + } + } + } + this.fpsFrameCount++; + this.lastFrameTime = (new Date()).getTime(); + }, + + printFps: function() { + var now = (new Date()).getTime(); + var s = 'Running'; + if (this.lastFpsTime) { + s += ': '+(this.fpsFrameCount/((now-this.lastFpsTime)/1000)).toFixed(2)+' FPS'; + } + $("#status").text(s); + this.fpsFrameCount = 0; + this.lastFpsTime = now; + }, + + stop: function() { + //$("#status").text("Stopped."); + clearInterval(this.frameInterval); + clearInterval(this.fpsInterval); + this.isRunning = false; + }, + + reloadRom: function() { + if(this.romFile != null){ + this.loadRom(this.romFile); + } + }, + + // Loads a ROM file into the CPU and PPU. + // The ROM file is validated first. + loadRom: function(file){ + // Can't load ROM while still running. + if(this.isRunning) + this.stop(); + + $("#status").text("Loading "+file); + + // Load ROM file: + this.rom = new NES.ROM(this); + this.rom.load(file); + if(this.rom.valid){ + + // The CPU will load + // the ROM into the CPU + // and PPU memory. + + this.reset(); + + this.mmap = this.rom.createMapper(); + if (!this.mmap) return; + this.mmap.loadROM(); + this.ppu.setMirroring(this.rom.getMirroringType()); + this.romFile = file; + + $("#status").text(file+" successfully loaded. Ready to be started."); + } + else { + $("#status").text(file+" is an invalid ROM!"); + } + return this.rom.valid; + }, + + resetFps: function() { + this.lastFpsTime = null; + this.fpsFrameCount = 0; + }, + + setFramerate: function(rate){ + this.nes.opts.preferredFrameRate = rate; + this.nes.frameTime = 1000/rate; + papu.setSampleRate(this.opts.sampleRate, false); + }, + + setLimitFrames: function(limit) { + this.limitFrames = limit; + this.lastFrameTime = null; + } +} diff --git a/js.2/papu.js b/js.2/papu.js new file mode 100644 index 0000000..f30864f --- /dev/null +++ b/js.2/papu.js @@ -0,0 +1,1422 @@ + +NES.PAPU = function(nes) { + this.nes = nes; + + this.square1 = new NES.PAPU.ChannelSquare(this, true); + this.square2 = new NES.PAPU.ChannelSquare(this, false); + this.triangle = new NES.PAPU.ChannelTriangle(this); + this.noise = new NES.PAPU.ChannelNoise(this); + this.dmc = new NES.PAPU.ChannelDM(this); + + this.frameIrqCounter = null; + this.frameIrqCounterMax = 4; + this.initCounter = 2048; + this.channelEnableValue = null; + + this.bufferSize = 8192; + this.bufferIndex = 0; + this.sampleRate = 44100; + + this.lengthLookup = null; + this.dmcFreqLookup = null; + this.noiseWavelengthLookup = null; + this.square_table = null; + this.tnd_table = null; + this.sampleBuffer = new Array(this.bufferSize*2); + + this.frameIrqEnabled = false; + this.frameIrqActive; + this.frameClockNow; + this.startedPlaying=false; + this.recordOutput = false; + this.initingHardware = false; + + this.masterFrameCounter = null; + this.derivedFrameCounter = null; + this.countSequence = null; + this.sampleTimer = null; + this.frameTime = null; + this.sampleTimerMax = null; + this.sampleCount = null; + + this.smpSquare1 = null; + this.smpSquare2 = null; + this.smpTriangle = null; + this.smpDmc = null; + this.accCount = null; + + // DC removal vars: + this.prevSampleL = 0; + this.prevSampleR = 0; + this.smpAccumL = 0 + this.smpAccumR = 0; + + // DAC range: + this.dacRange = 0; + this.dcValue = 0; + + // Master volume: + this.masterVolume = 256; + + // Stereo positioning: + this.stereoPosLSquare1 = null; + this.stereoPosLSquare2 = null; + this.stereoPosLTriangle = null; + this.stereoPosLNoise = null; + this.stereoPosLDMC = null; + this.stereoPosRSquare1 = null; + this.stereoPosRSquare2 = null; + this.stereoPosRTriangle = null; + this.stereoPosRNoise = null; + this.stereoPosRDMC = null; + + this.extraCycles = null; + + this.maxSample = null; + this.minSample = null; + + // Panning: + this.panning = new Array( + 80, + 170, + 100, + 150, + 128 + ); + this.setPanning(this.panning); + + // Initialize lookup tables: + this.initLengthLookup(); + this.initDmcFrequencyLookup(); + this.initNoiseWavelengthLookup(); + this.initDACtables(); + + // Init sound registers: + for(var i=0;i<0x14;i++){ + if(i==0x10){ + this.writeReg(0x4010, 0x10); + }else{ + this.writeReg(0x4000+i, 0); + } + } + + this.dynamicaudio = new DynamicAudio(); + + this.reset(); +} + +NES.PAPU.prototype = { + reset: function() { + this.sampleRate = this.nes.opts.sampleRate; + this.sampleTimerMax = parseInt( + (1024.0 * this.nes.opts.CPU_FREQ_NTSC + * this.nes.opts.preferredFrameRate) / + (this.sampleRate * 60.0) + ); + + this.frameTime = parseInt( + (14915.0 * this.nes.opts.preferredFrameRate) / 60.0 + ); + + this.sampleTimer = 0; + this.bufferIndex = 0; + + this.updateChannelEnable(0); + this.masterFrameCounter = 0; + this.derivedFrameCounter = 0; + this.countSequence = 0; + this.sampleCount = 0; + this.initCounter = 2048; + this.frameIrqEnabled = false; + this.initingHardware = false; + + this.resetCounter(); + + this.square1.reset(); + this.square2.reset(); + this.triangle.reset(); + this.noise.reset(); + this.dmc.reset(); + + this.bufferIndex = 0; + this.accCount = 0; + this.smpSquare1 = 0; + this.smpSquare2 = 0; + this.smpTriangle = 0; + this.smpDmc = 0; + + this.frameIrqEnabled = false; + this.frameIrqCounterMax = 4; + + this.channelEnableValue = 0xFF; + this.startedPlaying = false; + this.prevSampleL = 0; + this.prevSampleR = 0; + this.smpAccumL = 0; + this.smpAccumR = 0; + + this.maxSample = -500000; + this.minSample = 500000; + }, + + readReg: function(address){ + // Read 0x4015: + var tmp = 0; + tmp |= (this.square1.getLengthStatus() ); + tmp |= (this.square2.getLengthStatus() <<1); + tmp |= (this.triangle.getLengthStatus()<<2); + tmp |= (this.noise.getLengthStatus() <<3); + tmp |= (this.dmc.getLengthStatus() <<4); + tmp |= (((this.frameIrqActive && this.frameIrqEnabled)?1:0)<<6); + tmp |= (this.dmc.getIrqStatus() <<7); + + this.frameIrqActive = false; + this.dmc.irqGenerated = false; + + return tmp&0xFFFF; + }, + + writeReg: function(address, value){ + if (address>=0x4000 && address<0x4004) { + // Square Wave 1 Control + this.square1.writeReg(address,value); + ////System.out.println("Square Write"); + } + else if (address>=0x4004 && address<0x4008) { + // Square 2 Control + this.square2.writeReg(address,value); + } + else if (address>=0x4008 && address<0x400C) { + // Triangle Control + this.triangle.writeReg(address,value); + } + else if(address>=0x400C && address<=0x400F){ + // Noise Control + this.noise.writeReg(address,value); + } + else if(address == 0x4010){ + // DMC Play mode & DMA frequency + this.dmc.writeReg(address,value); + } + else if(address == 0x4011){ + // DMC Delta Counter + this.dmc.writeReg(address,value); + } + else if(address == 0x4012){ + // DMC Play code starting address + this.dmc.writeReg(address,value); + } + else if(address == 0x4013){ + // DMC Play code length + this.dmc.writeReg(address,value); + } + else if(address == 0x4015){ + // Channel enable + this.updateChannelEnable(value); + + if (value != 0 && this.initCounter > 0) { + // Start hardware initialization + this.initingHardware = true; + } + + // DMC/IRQ Status + this.dmc.writeReg(address,value); + } + else if(address == 0x4017){ + // Frame counter control + this.countSequence = (value>>7)&1; + this.masterFrameCounter = 0; + this.frameIrqActive = false; + + if (((value>>6)&0x1)==0){ + this.frameIrqEnabled = true; + } + else { + this.frameIrqEnabled = false; + } + + if(this.countSequence == 0){ + // NTSC: + this.frameIrqCounterMax = 4; + this.derivedFrameCounter = 4; + } + else { + // PAL: + this.frameIrqCounterMax = 5; + this.derivedFrameCounter = 0; + this.frameCounterTick(); + } + } + }, + + resetCounter: function(){ + if(this.countSequence==0){ + this.derivedFrameCounter = 4; + }else{ + this.derivedFrameCounter = 0; + } + }, + + // Updates channel enable status. + // This is done on writes to the + // channel enable register (0x4015), + // and when the user enables/disables channels + // in the GUI. + updateChannelEnable: function(value){ + this.channelEnableValue = value&0xFFFF; + this.square1.setEnabled((value&1)!=0); + this.square2.setEnabled((value&2)!=0); + this.triangle.setEnabled((value&4)!=0); + this.noise.setEnabled((value&8)!=0); + this.dmc.setEnabled((value&16)!=0); + }, + + // Clocks the frame counter. It should be clocked at + // twice the cpu speed, so the cycles will be + // divided by 2 for those counters that are + // clocked at cpu speed. + clockFrameCounter: function(nCycles){ + if(this.initCounter > 0){ + if(this.initingHardware){ + this.initCounter -= nCycles; + if(this.initCounter<=0) this.initingHardware = false; + return; + } + } + + // Don't process ticks beyond next sampling: + nCycles += this.extraCycles; + var maxCycles = this.sampleTimerMax-this.sampleTimer; + if((nCycles<<10) > maxCycles){ + + this.extraCycles = ((nCycles<<10) - maxCycles)>>10; + nCycles -= this.extraCycles; + + }else{ + + this.extraCycles = 0; + + } + + var dmc = this.dmc; + var triangle = this.triangle; + var square1 = this.square1; + var square2 = this.square2; + var noise = this.noise; + + // Clock DMC: + if(dmc.isEnabled){ + + dmc.shiftCounter-=(nCycles<<3); + while(dmc.shiftCounter<=0 && dmc.dmaFrequency>0){ + dmc.shiftCounter += dmc.dmaFrequency; + dmc.clockDmc(); + } + + } + + // Clock Triangle channel Prog timer: + if(triangle.progTimerMax>0){ + + triangle.progTimerCount -= nCycles; + while(triangle.progTimerCount <= 0){ + + triangle.progTimerCount += triangle.progTimerMax+1; + if(triangle.linearCounter>0 && triangle.lengthCounter>0){ + + triangle.triangleCounter++; + triangle.triangleCounter &= 0x1F; + + if(triangle.isEnabled){ + if(triangle.triangleCounter>=0x10){ + // Normal value. + triangle.sampleValue = (triangle.triangleCounter&0xF); + }else{ + // Inverted value. + triangle.sampleValue = (0xF - (triangle.triangleCounter&0xF)); + } + triangle.sampleValue <<= 4; + } + } + } + } + + // Clock Square channel 1 Prog timer: + square1.progTimerCount -= nCycles; + if(square1.progTimerCount <= 0){ + + square1.progTimerCount += (square1.progTimerMax+1)<<1; + + square1.squareCounter++; + square1.squareCounter&=0x7; + square1.updateSampleValue(); + + } + + // Clock Square channel 2 Prog timer: + square2.progTimerCount -= nCycles; + if(square2.progTimerCount <= 0){ + + square2.progTimerCount += (square2.progTimerMax+1)<<1; + + square2.squareCounter++; + square2.squareCounter&=0x7; + square2.updateSampleValue(); + + } + + // Clock noise channel Prog timer: + var acc_c = nCycles; + if(noise.progTimerCount-acc_c > 0){ + + // Do all cycles at once: + noise.progTimerCount -= acc_c; + noise.accCount += acc_c; + noise.accValue += acc_c * noise.sampleValue; + + }else{ + + // Slow-step: + while((acc_c--) > 0){ + + if(--noise.progTimerCount <= 0 && noise.progTimerMax>0){ + + // Update noise shift register: + noise.shiftReg <<= 1; + noise.tmp = (((noise.shiftReg << (noise.randomMode==0?1:6)) ^ noise.shiftReg) & 0x8000 ); + if(noise.tmp!=0){ + + // Sample value must be 0. + noise.shiftReg |= 0x01; + noise.randomBit = 0; + noise.sampleValue = 0; + + }else{ + + // Find sample value: + noise.randomBit = 1; + if(noise.isEnabled && noise.lengthCounter>0){ + noise.sampleValue = noise.masterVolume; + }else{ + noise.sampleValue = 0; + } + + } + + noise.progTimerCount += noise.progTimerMax; + + } + + noise.accValue += noise.sampleValue; + noise.accCount++; + + } + } + + + // Frame IRQ handling: + if (this.frameIrqEnabled && this.frameIrqActive){ + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_NORMAL); + } + + // Clock frame counter at double CPU speed: + this.masterFrameCounter += (nCycles<<1); + if (this.masterFrameCounter >= this.frameTime) { + // 240Hz tick: + this.masterFrameCounter -= this.frameTime; + this.frameCounterTick(); + } + + // Accumulate sample value: + this.accSample(nCycles); + + // Clock sample timer: + this.sampleTimer += nCycles<<10; + if(this.sampleTimer>=this.sampleTimerMax){ + // Sample channels: + this.sample(); + this.sampleTimer -= this.sampleTimerMax; + } + }, + + accSample: function(cycles){ + var triangle = this.triangle; + + // Special treatment for triangle channel - need to interpolate. + if(triangle.sampleCondition){ + + var triValue = parseInt((triangle.progTimerCount<<4) / (triangle.progTimerMax+1)); + if(triValue>16) triValue = 16; + if(triangle.triangleCounter >= 16){ + triValue = 16-triValue; + } + + // Add non-interpolated sample value: + triValue += triangle.sampleValue; + } + + // Now sample normally: + if(cycles == 2){ + + this.smpTriangle += triValue << 1; + this.smpDmc += this.dmc.sample << 1; + this.smpSquare1 += this.square1.sampleValue << 1; + this.smpSquare2 += this.square2.sampleValue << 1; + this.accCount += 2; + + }else if(cycles == 4){ + + this.smpTriangle += triValue << 2; + this.smpDmc += this.dmc.sample << 2; + this.smpSquare1 += this.square1.sampleValue << 2; + this.smpSquare2 += this.square2.sampleValue << 2; + this.accCount += 4; + + }else{ + + this.smpTriangle += cycles * triValue; + this.smpDmc += cycles * this.dmc.sample; + this.smpSquare1 += cycles * this.square1.sampleValue; + this.smpSquare2 += cycles * this.square2.sampleValue; + this.accCount += cycles; + + } + + }, + + frameCounterTick: function(){ + + this.derivedFrameCounter++; + if(this.derivedFrameCounter >= this.frameIrqCounterMax){ + this.derivedFrameCounter = 0; + } + + if(this.derivedFrameCounter==1 || this.derivedFrameCounter==3){ + + // Clock length & sweep: + this.triangle.clockLengthCounter(); + this.square1.clockLengthCounter(); + this.square2.clockLengthCounter(); + this.noise.clockLengthCounter(); + this.square1.clockSweep(); + this.square2.clockSweep(); + + } + + if(this.derivedFrameCounter >= 0 && this.derivedFrameCounter < 4){ + + // Clock linear & decay: + this.square1.clockEnvDecay(); + this.square2.clockEnvDecay(); + this.noise.clockEnvDecay(); + this.triangle.clockLinearCounter(); + + } + + if(this.derivedFrameCounter == 3 && this.countSequence==0){ + + // Enable IRQ: + this.frameIrqActive = true; + + } + + + // End of 240Hz tick + + }, + + + // Samples the channels, mixes the output together, + // writes to buffer and (if enabled) file. + sample: function(){ + + if(this.accCount>0){ + + this.smpSquare1 <<= 4; + this.smpSquare1 = parseInt(this.smpSquare1/this.accCount); + + this.smpSquare2 <<= 4; + this.smpSquare2 = parseInt(this.smpSquare2/this.accCount); + + this.smpTriangle = parseInt(this.smpTriangle/this.accCount); + + this.smpDmc <<= 4; + this.smpDmc = parseInt(this.smpDmc/this.accCount); + + this.accCount = 0; + + }else{ + + this.smpSquare1 = this.square1.sampleValue << 4; + this.smpSquare2 = this.square2.sampleValue << 4; + this.smpTriangle = this.triangle.sampleValue ; + this.smpDmc = this.dmc.sample << 4; + + } + + var smpNoise = parseInt((this.noise.accValue<<4)/this.noise.accCount); + this.noise.accValue = smpNoise>>4; + this.noise.accCount = 1; + + // Stereo sound. + + // Left channel: + var sq_index = ( this.smpSquare1 * this.stereoPosLSquare1 + this.smpSquare2 * this.stereoPosLSquare2 )>>8; + var tnd_index = (3*this.smpTriangle * this.stereoPosLTriangle + (smpNoise<<1) * this.stereoPosLNoise + this.smpDmc*this.stereoPosLDMC)>>8; + if(sq_index >= this.square_table.length)sq_index = this.square_table.length-1; + if(tnd_index >= this.tnd_table.length)tnd_index = this.tnd_table.length-1; + var sampleValueL = this.square_table[sq_index] + this.tnd_table[tnd_index] - this.dcValue; + + // Right channel: + var sq_index = ( this.smpSquare1 * this.stereoPosRSquare1 + this.smpSquare2 * this.stereoPosRSquare2 )>>8; + var tnd_index = (3*this.smpTriangle * this.stereoPosRTriangle + (smpNoise<<1)* this.stereoPosRNoise + this.smpDmc*this.stereoPosRDMC)>>8; + if(sq_index >= this.square_table.length)sq_index = this.square_table.length-1; + if(tnd_index >= this.tnd_table.length)tnd_index = this.tnd_table.length-1; + var sampleValueR = this.square_table[sq_index] + this.tnd_table[tnd_index] - this.dcValue; + + // Remove DC from left channel: + var smpDiffL = sampleValueL - this.prevSampleL; + this.prevSampleL += smpDiffL; + this.smpAccumL += smpDiffL - (this.smpAccumL >> 10); + sampleValueL = this.smpAccumL; + + + // Remove DC from right channel: + var smpDiffR = sampleValueR - this.prevSampleR; + this.prevSampleR += smpDiffR; + this.smpAccumR += smpDiffR - (this.smpAccumR >> 10); + sampleValueR = this.smpAccumR; + + // Write: + if (sampleValueL > this.maxSample) this.maxSample = sampleValueL; + if (sampleValueL < this.minSample) this.minSample = sampleValueL; + this.sampleBuffer[this.bufferIndex++] = (sampleValueL ); + this.sampleBuffer[this.bufferIndex++] = (sampleValueR ); + + // Write full buffer + if (this.bufferIndex == this.sampleBuffer.length) { + this.dynamicaudio.writeInt(this.sampleBuffer); + this.sampleBuffer = new Array(this.bufferSize*2); + this.bufferIndex = 0; + } + + // Reset sampled values: + this.smpSquare1 = 0; + this.smpSquare2 = 0; + this.smpTriangle = 0; + this.smpDmc = 0; + + }, + + getLengthMax: function(value){ + return this.lengthLookup[value>>3]; + }, + + getDmcFrequency: function(value){ + if(value>=0 && value<0x10){ + return this.dmcFreqLookup[value]; + } + return 0; + }, + + getNoiseWaveLength: function(value){ + if(value>=0 && value<0x10){ + return this.noiseWavelengthLookup[value]; + } + return 0; + }, + + setPanning: function(pos){ + for(var i=0;i<5;i++){ + this.panning[i] = pos[i]; + } + this.updateStereoPos(); + }, + + setMasterVolume: function(value){ + if(value<0)value=0; + if(value>256)value=256; + this.masterVolume = value; + this.updateStereoPos(); + }, + + updateStereoPos: function(){ + this.stereoPosLSquare1 = (this.panning[0]*this.masterVolume)>>8; + this.stereoPosLSquare2 = (this.panning[1]*this.masterVolume)>>8; + this.stereoPosLTriangle = (this.panning[2]*this.masterVolume)>>8; + this.stereoPosLNoise = (this.panning[3]*this.masterVolume)>>8; + this.stereoPosLDMC = (this.panning[4]*this.masterVolume)>>8; + + this.stereoPosRSquare1 = this.masterVolume - this.stereoPosLSquare1; + this.stereoPosRSquare2 = this.masterVolume - this.stereoPosLSquare2; + this.stereoPosRTriangle = this.masterVolume - this.stereoPosLTriangle; + this.stereoPosRNoise = this.masterVolume - this.stereoPosLNoise; + this.stereoPosRDMC = this.masterVolume - this.stereoPosLDMC; + }, + + initLengthLookup: function(){ + + this.lengthLookup = new Array( + 0x0A, 0xFE, + 0x14, 0x02, + 0x28, 0x04, + 0x50, 0x06, + 0xA0, 0x08, + 0x3C, 0x0A, + 0x0E, 0x0C, + 0x1A, 0x0E, + 0x0C, 0x10, + 0x18, 0x12, + 0x30, 0x14, + 0x60, 0x16, + 0xC0, 0x18, + 0x48, 0x1A, + 0x10, 0x1C, + 0x20, 0x1E + ); + + }, + + initDmcFrequencyLookup: function(){ + + this.dmcFreqLookup = new Array(16); + + this.dmcFreqLookup[0x0] = 0xD60; + this.dmcFreqLookup[0x1] = 0xBE0; + this.dmcFreqLookup[0x2] = 0xAA0; + this.dmcFreqLookup[0x3] = 0xA00; + this.dmcFreqLookup[0x4] = 0x8F0; + this.dmcFreqLookup[0x5] = 0x7F0; + this.dmcFreqLookup[0x6] = 0x710; + this.dmcFreqLookup[0x7] = 0x6B0; + this.dmcFreqLookup[0x8] = 0x5F0; + this.dmcFreqLookup[0x9] = 0x500; + this.dmcFreqLookup[0xA] = 0x470; + this.dmcFreqLookup[0xB] = 0x400; + this.dmcFreqLookup[0xC] = 0x350; + this.dmcFreqLookup[0xD] = 0x2A0; + this.dmcFreqLookup[0xE] = 0x240; + this.dmcFreqLookup[0xF] = 0x1B0; + //for(int i=0;i<16;i++)dmcFreqLookup[i]/=8; + + }, + + initNoiseWavelengthLookup: function(){ + + this.noiseWavelengthLookup = new Array(16); + + this.noiseWavelengthLookup[0x0] = 0x004; + this.noiseWavelengthLookup[0x1] = 0x008; + this.noiseWavelengthLookup[0x2] = 0x010; + this.noiseWavelengthLookup[0x3] = 0x020; + this.noiseWavelengthLookup[0x4] = 0x040; + this.noiseWavelengthLookup[0x5] = 0x060; + this.noiseWavelengthLookup[0x6] = 0x080; + this.noiseWavelengthLookup[0x7] = 0x0A0; + this.noiseWavelengthLookup[0x8] = 0x0CA; + this.noiseWavelengthLookup[0x9] = 0x0FE; + this.noiseWavelengthLookup[0xA] = 0x17C; + this.noiseWavelengthLookup[0xB] = 0x1FC; + this.noiseWavelengthLookup[0xC] = 0x2FA; + this.noiseWavelengthLookup[0xD] = 0x3F8; + this.noiseWavelengthLookup[0xE] = 0x7F2; + this.noiseWavelengthLookup[0xF] = 0xFE4; + + }, + + initDACtables: function(){ + + this.square_table = new Array(32*16); + this.tnd_table = new Array(204*16); + var value; + + var ival; + var max_sqr = 0; + var max_tnd = 0; + + for(var i=0;i<32*16;i++){ + + + value = 95.52 / (8128.0 / (i/16.0) + 100.0); + value *= 0.98411; + value *= 50000.0; + ival = parseInt(value); + + this.square_table[i] = ival; + if(ival > max_sqr){ + max_sqr = ival; + } + + } + + for(var i=0;i<204*16;i++){ + + value = 163.67 / (24329.0 / (i/16.0) + 100.0); + value *= 0.98411; + value *= 50000.0; + ival = parseInt(value); + + this.tnd_table[i] = ival; + if(ival > max_tnd){ + max_tnd = ival; + } + + } + + this.dacRange = max_sqr+max_tnd; + this.dcValue = this.dacRange/2; + + } +} + + +NES.PAPU.ChannelDM = function(papu) { + this.papu = papu; + + this.MODE_NORMAL = 0; + this.MODE_LOOP = 1; + this.MODE_IRQ = 2; + + this.isEnabled = null; + this.hasSample = null; + this.irqGenerated = false; + + this.playMode = null; + this.dmaFrequency = null; + this.dmaCounter = null; + this.deltaCounter = null; + this.playStartAddress = null; + this.playAddress = null; + this.playLength = null; + this.playLengthCounter = null; + this.shiftCounter = null; + this.reg4012 = null; + this.reg4013 = null; + this.sample = null; + this.dacLsb = null; + this.data = null; + + this.reset(); +} + +NES.PAPU.ChannelDM.prototype = { + clockDmc: function() { + + // Only alter DAC value if the sample buffer has data: + if(this.hasSample) { + + if((this.data&1) === 0) { + + // Decrement delta: + if(this.deltaCounter>0) { + this.deltaCounter--; + } + + }else{ + + // Increment delta: + if(this.deltaCounter<63) { + this.deltaCounter++; + } + + } + + // Update sample value: + this.sample = this.isEnabled ? (this.deltaCounter<<1)+this.dacLsb : 0; + + // Update shift register: + this.data>>=1; + + } + + this.dmaCounter--; + if(this.dmaCounter <= 0){ + + // No more sample bits. + this.hasSample = false; + this.endOfSample(); + this.dmaCounter = 8; + + } + + if(this.irqGenerated){ + this.papu.nes.cpu.requestIrq(this.papu.nes.cpu.IRQ_NORMAL); + } + + }, + + endOfSample: function() { + if(this.playLengthCounter===0 && this.playMode==this.MODE_LOOP){ + + // Start from beginning of sample: + this.playAddress = this.playStartAddress; + this.playLengthCounter = this.playLength; + + } + + if(this.playLengthCounter > 0){ + + // Fetch next sample: + this.nextSample(); + + if(this.playLengthCounter == 0){ + + // Last byte of sample fetched, generate IRQ: + if(this.playMode == this.MODE_IRQ){ + + // Generate IRQ: + this.irqGenerated = true; + + } + + } + + } + + }, + + nextSample: function() { + // Fetch byte: + this.data = this.papu.nes.mmap.load(this.playAddress); + this.papu.nes.cpu.haltCycles(4); + + this.playLengthCounter--; + this.playAddress++; + if(this.playAddress>0xFFFF){ + this.playAddress = 0x8000; + } + + this.hasSample = true; + }, + + writeReg: function(address, value) { + if (address == 0x4010) { + + // Play mode, DMA Frequency + if((value>>6)==0) { + this.playMode = this.MODE_NORMAL; + }else if(((value>>6)&1)==1) { + this.playMode = this.MODE_LOOP; + }else if((value>>6)==2) { + this.playMode = this.MODE_IRQ; + } + + if((value&0x80)==0) { + this.irqGenerated = false; + } + + this.dmaFrequency = this.papu.getDmcFrequency(value&0xF); + + }else if(address == 0x4011){ + + // Delta counter load register: + this.deltaCounter = (value>>1)&63; + this.dacLsb = value&1; + this.sample = ((this.deltaCounter<<1)+this.dacLsb); // update sample value + + }else if(address == 0x4012){ + + // DMA address load register + this.playStartAddress = (value<<6)|0x0C000; + this.playAddress = this.playStartAddress; + this.reg4012 = value; + + }else if(address == 0x4013){ + + // Length of play code + this.playLength = (value<<4)+1; + this.playLengthCounter = this.playLength; + this.reg4013 = value; + + }else if(address == 0x4015){ + + // DMC/IRQ Status + if(((value>>4)&1)==0){ + // Disable: + this.playLengthCounter = 0; + }else{ + // Restart: + this.playAddress = this.playStartAddress; + this.playLengthCounter = this.playLength; + } + this.irqGenerated = false; + } + }, + + setEnabled: function(value) { + if((!this.isEnabled) && value){ + this.playLengthCounter = this.playLength; + } + this.isEnabled = value; + }, + + getLengthStatus: function(){ + return ((this.playLengthCounter==0 || !this.isEnabled)?0:1); + }, + + getIrqStatus: function(){ + return (this.irqGenerated?1:0); + }, + + reset: function(){ + this.isEnabled = false; + this.irqGenerated = false; + this.playMode = this.MODE_NORMAL; + this.dmaFrequency = 0; + this.dmaCounter = 0; + this.deltaCounter = 0; + this.playStartAddress = 0; + this.playAddress = 0; + this.playLength = 0; + this.playLengthCounter = 0; + this.sample = 0; + this.dacLsb = 0; + this.shiftCounter = 0; + this.reg4012 = 0; + this.reg4013 = 0; + this.data = 0; + } +} + + +NES.PAPU.ChannelNoise = function(papu) { + this.papu = papu; + + this.isEnabled = null; + this.envDecayDisable = null; + this.envDecayLoopEnable = null; + this.lengthCounterEnable = null; + this.envReset = null; + this.shiftNow = null; + + this.lengthCounter = null; + this.progTimerCount = null; + this.progTimerMax = null; + this.envDecayRate = null; + this.envDecayCounter = null; + this.envVolume = null; + this.masterVolume = null; + this.shiftReg = 1<<14; + this.randomBit = null; + this.randomMode = null; + this.sampleValue = null; + this.accValue=0; + this.accCount=1; + this.tmp = null; + + this.reset(); +} + +NES.PAPU.ChannelNoise.prototype = { + reset: function() { + this.progTimerCount = 0; + this.progTimerMax = 0; + this.isEnabled = false; + this.lengthCounter = 0; + this.lengthCounterEnable = false; + this.envDecayDisable = false; + this.envDecayLoopEnable = false; + this.shiftNow = false; + this.envDecayRate = 0; + this.envDecayCounter = 0; + this.envVolume = 0; + this.masterVolume = 0; + this.shiftReg = 1; + this.randomBit = 0; + this.randomMode = 0; + this.sampleValue = 0; + this.tmp = 0; + }, + + clockLengthCounter: function(){ + if (this.lengthCounterEnable && this.lengthCounter>0){ + this.lengthCounter--; + if (this.lengthCounter == 0) { + this.updateSampleValue(); + } + } + }, + + clockEnvDecay: function() { + if(this.envReset) { + // Reset envelope: + this.envReset = false; + this.envDecayCounter = this.envDecayRate + 1; + this.envVolume = 0xF; + } + else if (--this.envDecayCounter <= 0) { + // Normal handling: + this.envDecayCounter = this.envDecayRate + 1; + if(this.envVolume>0) { + this.envVolume--; + } + else { + this.envVolume = this.envDecayLoopEnable ? 0xF : 0; + } + } + this.masterVolume = this.envDecayDisable ? this.envDecayRate : this.envVolume; + this.updateSampleValue(); + }, + + updateSampleValue: function() { + if(this.isEnabled && this.lengthCounter>0){ + this.sampleValue = this.randomBit * this.masterVolume; + } + }, + + writeReg: function(address, value){ + if(address == 0x400C) { + // Volume/Envelope decay: + this.envDecayDisable = ((value&0x10)!=0); + this.envDecayRate = value&0xF; + this.envDecayLoopEnable = ((value&0x20)!=0); + this.lengthCounterEnable = ((value&0x20)==0); + this.masterVolume = this.envDecayDisable?this.envDecayRate:this.envVolume; + + }else if(address == 0x400E) { + // Programmable timer: + this.progTimerMax = this.papu.getNoiseWaveLength(value&0xF); + this.randomMode = value>>7; + + }else if(address == 0x400F) { + // Length counter + this.lengthCounter = this.papu.getLengthMax(value&248); + this.envReset = true; + } + // Update: + //updateSampleValue(); + }, + + setEnabled: function(value){ + this.isEnabled = value; + if (!value) { + this.lengthCounter = 0; + } + this.updateSampleValue(); + }, + + getLengthStatus: function() { + return ((this.lengthCounter==0 || !this.isEnabled)?0:1); + } +} + + +NES.PAPU.ChannelSquare = function(papu, square1) { + this.papu = papu; + + this.dutyLookup = [ + 0, 1, 0, 0, 0, 0, 0, 0, + 0, 1, 1, 0, 0, 0, 0, 0, + 0, 1, 1, 1, 1, 0, 0, 0, + 1, 0, 0, 1, 1, 1, 1, 1 + ]; + this.impLookup = [ + 1,-1, 0, 0, 0, 0, 0, 0, + 1, 0,-1, 0, 0, 0, 0, 0, + 1, 0, 0, 0,-1, 0, 0, 0, + -1, 0, 1, 0, 0, 0, 0, 0 + ]; + + this.sqr1 = square1; + this.isEnabled = null; + this.lengthCounterEnable = null; + this.sweepActive = null; + this.envDecayDisable = null; + this.envDecayLoopEnable = null; + this.envReset = null; + this.sweepCarry = null; + this.updateSweepPeriod = null; + + this.progTimerCount = null; + this.progTimerMax = null; + this.lengthCounter = null; + this.squareCounter = null; + this.sweepCounter = null; + this.sweepCounterMax = null; + this.sweepMode = null; + this.sweepShiftAmount = null; + this.envDecayRate = null; + this.envDecayCounter = null; + this.envVolume = null; + this.masterVolume = null; + this.dutyMode = null; + this.sweepResult = null; + this.sampleValue = null; + this.vol = null; + + this.reset(); +} + +NES.PAPU.ChannelSquare.prototype = { + reset: function() { + this.progTimerCount = 0; + this.progTimerMax = 0; + this.lengthCounter = 0; + this.squareCounter = 0; + this.sweepCounter = 0; + this.sweepCounterMax = 0; + this.sweepMode = 0; + this.sweepShiftAmount = 0; + this.envDecayRate = 0; + this.envDecayCounter = 0; + this.envVolume = 0; + this.masterVolume = 0; + this.dutyMode = 0; + this.vol = 0; + + this.isEnabled = false; + this.lengthCounterEnable = false; + this.sweepActive = false; + this.sweepCarry = false; + this.envDecayDisable = false; + this.envDecayLoopEnable = false; + }, + + clockLengthCounter: function() { + if (this.lengthCounterEnable && this.lengthCounter>0){ + this.lengthCounter--; + if (this.lengthCounter==0) this.updateSampleValue(); + } + }, + + clockEnvDecay: function() { + if(this.envReset){ + // Reset envelope: + this.envReset = false; + this.envDecayCounter = this.envDecayRate + 1; + this.envVolume = 0xF; + }else if((--this.envDecayCounter) <= 0){ + // Normal handling: + this.envDecayCounter = this.envDecayRate + 1; + if(this.envVolume>0){ + this.envVolume--; + }else{ + this.envVolume = this.envDecayLoopEnable ? 0xF : 0; + } + } + + this.masterVolume = this.envDecayDisable ? this.envDecayRate : this.envVolume; + this.updateSampleValue(); + }, + + clockSweep: function() { + if(--this.sweepCounter<=0){ + + this.sweepCounter = this.sweepCounterMax + 1; + if(this.sweepActive && this.sweepShiftAmount>0 && this.progTimerMax>7){ + + // Calculate result from shifter: + this.sweepCarry = false; + if(this.sweepMode==0){ + this.progTimerMax += (this.progTimerMax>>this.sweepShiftAmount); + if(this.progTimerMax > 4095){ + this.progTimerMax = 4095; + this.sweepCarry = true; + } + }else{ + this.progTimerMax = this.progTimerMax - ((this.progTimerMax>>this.sweepShiftAmount)-(this.sqr1?1:0)); + } + } + } + + if(this.updateSweepPeriod){ + this.updateSweepPeriod = false; + this.sweepCounter = this.sweepCounterMax + 1; + } + }, + + updateSampleValue: function() { + if(this.isEnabled && this.lengthCounter>0 && this.progTimerMax>7){ + + if(this.sweepMode==0 && (this.progTimerMax + (this.progTimerMax>>this.sweepShiftAmount)) > 4095){ + //if(this.sweepCarry){ + this.sampleValue = 0; + }else{ + this.sampleValue = this.masterVolume*this.dutyLookup[(this.dutyMode<<3)+this.squareCounter]; + } + }else{ + this.sampleValue = 0; + } + }, + + writeReg: function(address, value){ + var addrAdd = (this.sqr1?0:4); + if (address == 0x4000 + addrAdd) { + // Volume/Envelope decay: + this.envDecayDisable = ((value&0x10)!=0); + this.envDecayRate = value & 0xF; + this.envDecayLoopEnable = ((value&0x20)!=0); + this.dutyMode = (value>>6)&0x3; + this.lengthCounterEnable = ((value&0x20)==0); + this.masterVolume = this.envDecayDisable?this.envDecayRate:this.envVolume; + this.updateSampleValue(); + + } + else if (address == 0x4001+addrAdd) { + // Sweep: + this.sweepActive = ((value&0x80)!=0); + this.sweepCounterMax = ((value>>4)&7); + this.sweepMode = (value>>3)&1; + this.sweepShiftAmount = value&7; + this.updateSweepPeriod = true; + } + else if (address == 0x4002+addrAdd){ + // Programmable timer: + this.progTimerMax &= 0x700; + this.progTimerMax |= value; + } + else if (address == 0x4003+addrAdd) { + // Programmable timer, length counter + this.progTimerMax &= 0xFF; + this.progTimerMax |= ((value&0x7)<<8); + + if (this.isEnabled){ + this.lengthCounter = this.papu.getLengthMax(value&0xF8); + } + + this.envReset = true; + } + }, + + setEnabled: function(value){ + this.isEnabled = value; + if(!value) this.lengthCounter = 0; + this.updateSampleValue(); + }, + + getLengthStatus: function() { + return ((this.lengthCounter==0 || !this.isEnabled)?0:1); + } +} + + +NES.PAPU.ChannelTriangle = function(papu) { + this.papu = papu; + + this.isEnabled = null; + this.sampleCondition = null; + this.lengthCounterEnable = null; + this.lcHalt = null; + this.lcControl = null; + + this.progTimerCount = null; + this.progTimerMax = null; + this.triangleCounter = null; + this.lengthCounter = null; + this.linearCounter = null; + this.lcLoadValue = null; + this.sampleValue = null; + this.tmp = null; + + this.reset(); +} + +NES.PAPU.ChannelTriangle.prototype = { + reset: function(){ + this.progTimerCount = 0; + this.progTimerMax = 0; + this.triangleCounter = 0; + this.isEnabled = false; + this.sampleCondition = false; + this.lengthCounter = 0; + this.lengthCounterEnable = false; + this.linearCounter = 0; + this.lcLoadValue = 0; + this.lcHalt = true; + this.lcControl = false; + this.tmp = 0; + this.sampleValue = 0xF; + }, + + clockLengthCounter: function(){ + if(this.lengthCounterEnable && this.lengthCounter>0){ + this.lengthCounter--; + if(this.lengthCounter==0){ + this.updateSampleCondition(); + } + } + }, + + clockLinearCounter: function(){ + if (this.lcHalt){ + // Load: + this.linearCounter = this.lcLoadValue; + this.updateSampleCondition(); + } + else if(this.linearCounter > 0){ + // Decrement: + this.linearCounter--; + this.updateSampleCondition(); + } + if(!this.lcControl){ + // Clear halt flag: + this.lcHalt = false; + } + }, + + getLengthStatus: function(){ + return ((this.lengthCounter === 0 || !this.isEnabled)?0:1); + }, + + readReg: function(address){ + return 0; + }, + + writeReg: function(address, value){ + if (address == 0x4008) { + // New values for linear counter: + this.lcControl = (value&0x80)!==0; + this.lcLoadValue = value&0x7F; + + // Length counter enable: + this.lengthCounterEnable = !this.lcControl; + } + else if (address == 0x400A) { + // Programmable timer: + this.progTimerMax &= 0x700; + this.progTimerMax |= value; + + } + else if(address == 0x400B) { + // Programmable timer, length counter + this.progTimerMax &= 0xFF; + this.progTimerMax |= ((value&0x07)<<8); + this.lengthCounter = this.papu.getLengthMax(value&0xF8); + this.lcHalt = true; + } + + this.updateSampleCondition(); + }, + + clockProgrammableTimer: function(nCycles){ + if(this.progTimerMax>0){ + this.progTimerCount += nCycles; + while(this.progTimerMax > 0 && this.progTimerCount >= this.progTimerMax){ + this.progTimerCount-=this.progTimerMax; + if(this.isEnabled && this.lengthCounter>0 && this.linearCounter>0){ + this.clockTriangleGenerator(); + } + } + } + }, + + clockTriangleGenerator: function() { + this.triangleCounter++; + this.triangleCounter &= 0x1F; + }, + + setEnabled: function(value) { + this.isEnabled = value; + if(!value) this.lengthCounter = 0; + this.updateSampleCondition(); + }, + + updateSampleCondition: function() { + this.sampleCondition = + this.isEnabled + && this.progTimerMax > 7 + && this.linearCounter > 0 + && this.lengthCounter > 0; + } +} + diff --git a/js.2/ppu.js b/js.2/ppu.js new file mode 100644 index 0000000..f49d250 --- /dev/null +++ b/js.2/ppu.js @@ -0,0 +1,1846 @@ +NES.PPU = function(nes) { + this.nes = nes; + + // Keep Chrome happy + this.vramMem = null; + this.spriteMem = null; + this.vramAddress = null; + this.vramTmpAddress = null; + this.vramBufferedReadValue = null; + this.firstWrite = null; + this.sramAddress = null; + this.mapperIrqCounter = null; + this.currentMirroring = null; + this.requestEndFrame = null; + this.nmiOk = null; + this.dummyCycleToggle = null; + this.validTileData = null; + this.nmiCounter = null; + this.scanlineAlreadyRendered = null; + this.f_nmiOnVblank = null; + this.f_spriteSize = null; + this.f_bgPatternTable = null; + this.f_spPatternTable = null; + this.f_addrInc = null; + this.f_nTblAddress = null; + this.f_color = null; + this.f_spVisibility = null; + this.f_bgVisibility = null; + this.f_spClipping = null; + this.f_bgClipping = null; + this.f_dispType = null; + this.cntFV = null; + this.cntV = null; + this.cntH = null; + this.cntVT = null; + this.cntHT = null; + this.regFV = null; + this.regV = null; + this.regH = null; + this.regVT = null; + this.regHT = null; + this.regFH = null; + this.regS = null; + this.curNt = null; + this.attrib = null; + this.buffer = null; + this.prevBuffer = null; + this.bgbuffer = null; + this.pixrendered = null; + this.spr0dummybuffer = null; + this.dummyPixPriTable = null; + this.validTileData = null; + this.scantile = null; + this.scanline = null; + this.lastRenderedScanline = null; + this.curX = null; + this.sprX = null; + this.sprY = null; + this.sprTile = null; + this.sprCol = null; + this.vertFlip = null; + this.horiFlip = null; + this.bgPriority = null; + this.spr0HitX = null; + this.spr0HitY = null; + this.hitSpr0 = null; + this.sprPalette = null; + this.imgPalette = null; + this.ptTile = null; + this.ntable1 = null; + this.currentMirroring = null; + this.nameTable = null; + this.vramMirrorTable = null; + this.palTable = null; + + + // Rendering Options: + this.showSpr0Hit = false; + this.clipToTvSize = true; + + this.canvas = document.getElementById('screen'); + this.canvasContext = this.canvas.getContext('2d'); + this.canvasImageData = this.canvasContext.getImageData(0, 0, 256, 240); + this.canvasContext.fillStyle = 'black'; + this.canvasContext.fillRect(0, 0, 256, 240); /* set alpha to opaque */ + // Set alpha + for (var i = 3; i < this.canvasImageData.data.length-3; i+=4) { + this.canvasImageData.data[i] = 0xFF; + } + + this.reset(); +} + +NES.PPU.prototype = { + // Status flags: + STATUS_VRAMWRITE: 4, + STATUS_SLSPRITECOUNT: 5, + STATUS_SPRITE0HIT: 6, + STATUS_VBLANK: 7, + + reset: function() { + // Memory + this.vramMem = new Array(0x8000); + this.spriteMem = new Array(0x100); + for (var i=0; i<this.vramMem.length; i++) { + this.vramMem[i] = 0; + } + for (var i=0; i<this.spriteMem.length; i++) { + this.spriteMem[i] = 0; + } + + // VRAM I/O: + this.vramAddress = null; + this.vramTmpAddress = null; + this.vramBufferedReadValue = 0; + this.firstWrite = true; // VRAM/Scroll Hi/Lo latch + + // SPR-RAM I/O: + this.sramAddress = 0; // 8-bit only. + + this.mapperIrqCounter = 0; + this.currentMirroring = -1; + this.requestEndFrame = false; + this.nmiOk = false; + this.dummyCycleToggle = false; + this.validTileData = false; + this.nmiCounter = 0; + this.scanlineAlreadyRendered = null; + + // Control Flags Register 1: + this.f_nmiOnVblank = 0; // NMI on VBlank. 0=disable, 1=enable + this.f_spriteSize = 0; // Sprite size. 0=8x8, 1=8x16 + this.f_bgPatternTable = 0; // Background Pattern Table address. 0=0x0000,1=0x1000 + this.f_spPatternTable = 0; // Sprite Pattern Table address. 0=0x0000,1=0x1000 + this.f_addrInc = 0; // PPU Address Increment. 0=1,1=32 + this.f_nTblAddress = 0; // Name Table Address. 0=0x2000,1=0x2400,2=0x2800,3=0x2C00 + + // Control Flags Register 2: + this.f_color = 0; // Background color. 0=black, 1=blue, 2=green, 4=red + this.f_spVisibility = 0; // Sprite visibility. 0=not displayed,1=displayed + this.f_bgVisibility = 0; // Background visibility. 0=Not Displayed,1=displayed + this.f_spClipping = 0; // Sprite clipping. 0=Sprites invisible in left 8-pixel column,1=No clipping + this.f_bgClipping = 0; // Background clipping. 0=BG invisible in left 8-pixel column, 1=No clipping + this.f_dispType = 0; // Display type. 0=color, 1=monochrome + + // Counters: + this.cntFV = 0; + this.cntV = 0; + this.cntH = 0; + this.cntVT = 0; + this.cntHT = 0; + + // Registers: + this.regFV = 0; + this.regV = 0; + this.regH = 0; + this.regVT = 0; + this.regHT = 0; + this.regFH = 0; + this.regS = 0; + + // These are temporary variables used in rendering and sound procedures. + // Their states outside of those procedures can be ignored. + // TODO: the use of this is a bit weird, investigate + this.curNt = null; + + // Variables used when rendering: + this.attrib = new Array(32); + this.buffer = new Array(256*240); + this.prevBuffer = new Array(256*240); + this.bgbuffer = new Array(256*240); + this.pixrendered = new Array(256*240); + this.spr0dummybuffer = new Array(256*240); + this.dummyPixPriTable = new Array(256*240); + + this.validTileData = null; + + this.scantile = new Array(32); + + // Initialize misc vars: + this.scanline = 0; + this.lastRenderedScanline = -1; + this.curX = 0; + + // Sprite data: + this.sprX = new Array(64); // X coordinate + this.sprY = new Array(64); // Y coordinate + this.sprTile = new Array(64); // Tile Index (into pattern table) + this.sprCol = new Array(64); // Upper two bits of color + this.vertFlip = new Array(64); // Vertical Flip + this.horiFlip = new Array(64); // Horizontal Flip + this.bgPriority = new Array(64); // Background priority + this.spr0HitX = 0; // Sprite #0 hit X coordinate + this.spr0HitY = 0; // Sprite #0 hit Y coordinate + this.hitSpr0 = false; + + // Palette data: + this.sprPalette = new Array(16); + this.imgPalette = new Array(16); + + // Create pattern table tile buffers: + this.ptTile = new Array(512); + for(var i=0;i<512;i++){ + this.ptTile[i] = new NES.PPU.Tile(); + } + + // Create nametable buffers: + // Name table data: + this.ntable1 = new Array(4); + this.currentMirroring = -1; + this.nameTable = new Array(4); + for(var i=0;i<4;i++){ + this.nameTable[i] = new NES.PPU.NameTable(32, 32, "Nt"+i); + } + + // Initialize mirroring lookup table: + this.vramMirrorTable = new Array(0x8000); + for(var i=0;i<0x8000;i++){ + this.vramMirrorTable[i] = i; + } + + this.palTable = new NES.PPU.PaletteTable(); + this.palTable.loadNTSCPalette(); + //this.palTable.loadDefaultPalette(); + + this.updateControlReg1(0); + this.updateControlReg2(0); + }, + + // Sets Nametable mirroring. + setMirroring: function(mirroring){ + + if(mirroring == this.currentMirroring){ + return; + } + + this.currentMirroring = mirroring; + this.triggerRendering(); + + // Remove mirroring: + if(this.vramMirrorTable==null){ + this.vramMirrorTable = new Array(0x8000); + } + for(var i=0;i<0x8000;i++){ + this.vramMirrorTable[i] = i; + } + + // Palette mirroring: + this.defineMirrorRegion(0x3f20,0x3f00,0x20); + this.defineMirrorRegion(0x3f40,0x3f00,0x20); + this.defineMirrorRegion(0x3f80,0x3f00,0x20); + this.defineMirrorRegion(0x3fc0,0x3f00,0x20); + + // Additional mirroring: + this.defineMirrorRegion(0x3000,0x2000,0xf00); + this.defineMirrorRegion(0x4000,0x0000,0x4000); + + if(mirroring == this.nes.rom.HORIZONTAL_MIRRORING){ + // Horizontal mirroring. + + this.ntable1[0] = 0; + this.ntable1[1] = 0; + this.ntable1[2] = 1; + this.ntable1[3] = 1; + + this.defineMirrorRegion(0x2400,0x2000,0x400); + this.defineMirrorRegion(0x2c00,0x2800,0x400); + + }else if(mirroring == this.nes.rom.VERTICAL_MIRRORING){ + // Vertical mirroring. + + this.ntable1[0] = 0; + this.ntable1[1] = 1; + this.ntable1[2] = 0; + this.ntable1[3] = 1; + + this.defineMirrorRegion(0x2800,0x2000,0x400); + this.defineMirrorRegion(0x2c00,0x2400,0x400); + + }else if(mirroring == this.nes.rom.SINGLESCREEN_MIRRORING){ + + // Single Screen mirroring + + this.ntable1[0] = 0; + this.ntable1[1] = 0; + this.ntable1[2] = 0; + this.ntable1[3] = 0; + + this.defineMirrorRegion(0x2400,0x2000,0x400); + this.defineMirrorRegion(0x2800,0x2000,0x400); + this.defineMirrorRegion(0x2c00,0x2000,0x400); + + }else if(mirroring == this.nes.rom.SINGLESCREEN_MIRRORING2){ + + + this.ntable1[0] = 1; + this.ntable1[1] = 1; + this.ntable1[2] = 1; + this.ntable1[3] = 1; + + this.defineMirrorRegion(0x2400,0x2400,0x400); + this.defineMirrorRegion(0x2800,0x2400,0x400); + this.defineMirrorRegion(0x2c00,0x2400,0x400); + + }else{ + + // Assume Four-screen mirroring. + + this.ntable1[0] = 0; + this.ntable1[1] = 1; + this.ntable1[2] = 2; + this.ntable1[3] = 3; + + } + + }, + + + // Define a mirrored area in the address lookup table. + // Assumes the regions don't overlap. + // The 'to' region is the region that is physically in memory. + defineMirrorRegion: function(fromStart, toStart, size){ + for(var i=0;i<size;i++){ + this.vramMirrorTable[fromStart+i] = toStart+i; + } + }, + + startVBlank: function(){ + + // Do NMI: + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_NMI); + + // Make sure everything is rendered: + if(this.lastRenderedScanline < 239){ + this.renderFramePartially( + this.lastRenderedScanline+1,240-this.lastRenderedScanline + ); + } + + // End frame: + this.endFrame(); + + // Reset scanline counter: + this.lastRenderedScanline = -1; + }, + + endScanline: function(){ + switch (this.scanline) { + case 19: + // Dummy scanline. + // May be variable length: + if(this.dummyCycleToggle){ + + // Remove dead cycle at end of scanline, + // for next scanline: + this.curX = 1; + this.dummyCycleToggle = !this.dummyCycleToggle; + + } + break; + + case 20: + // Clear VBlank flag: + this.setStatusFlag(this.STATUS_VBLANK,false); + + // Clear Sprite #0 hit flag: + this.setStatusFlag(this.STATUS_SPRITE0HIT,false); + this.hitSpr0 = false; + this.spr0HitX = -1; + this.spr0HitY = -1; + + if(this.f_bgVisibility == 1 || this.f_spVisibility==1){ + + // Update counters: + this.cntFV = this.regFV; + this.cntV = this.regV; + this.cntH = this.regH; + this.cntVT = this.regVT; + this.cntHT = this.regHT; + + if(this.f_bgVisibility==1){ + // Render dummy scanline: + this.renderBgScanline(false,0); + } + + } + + if(this.f_bgVisibility==1 && this.f_spVisibility==1){ + + // Check sprite 0 hit for first scanline: + this.checkSprite0(0); + + } + + if(this.f_bgVisibility==1 || this.f_spVisibility==1){ + // Clock mapper IRQ Counter: + this.nes.mmap.clockIrqCounter(); + } + break; + + case 261: + // Dead scanline, no rendering. + // Set VINT: + this.setStatusFlag(this.STATUS_VBLANK,true); + this.requestEndFrame = true; + this.nmiCounter = 9; + + // Wrap around: + this.scanline = -1; // will be incremented to 0 + + break; + + default: + if(this.scanline>=21 && this.scanline<=260){ + + // Render normally: + if(this.f_bgVisibility == 1){ + + if(!this.scanlineAlreadyRendered){ + // update scroll: + this.cntHT = this.regHT; + this.cntH = this.regH; + this.renderBgScanline(true,this.scanline+1-21); + } + this.scanlineAlreadyRendered=false; + + // Check for sprite 0 (next scanline): + if(!this.hitSpr0 && this.f_spVisibility==1){ + if(this.sprX[0]>=-7 && this.sprX[0]<256 && this.sprY[0]+1<=(this.scanline-20) && (this.sprY[0]+1+(this.f_spriteSize==0?8:16))>=(this.scanline-20)){ + + if(this.checkSprite0( + this.scanline-20)){ + //console.log("found spr0. curscan="+this.scanline+" hitscan="+this.spr0HitY); + this.hitSpr0 = true; + } + } + } + + } + + if(this.f_bgVisibility==1 || this.f_spVisibility==1){ + // Clock mapper IRQ Counter: + this.nes.mmap.clockIrqCounter(); + } + } + } + + this.scanline++; + this.regsToAddress(); + this.cntsToAddress(); + + }, + + startFrame: function(){ + // Set background color: + var bgColor=0; + + if(this.f_dispType == 0){ + + // Color display. + // f_color determines color emphasis. + // Use first entry of image palette as BG color. + bgColor = this.imgPalette[0]; + + }else{ + + // Monochrome display. + // f_color determines the bg color. + switch(this.f_color){ + case 0:{ + // Black + bgColor = 0x00000; + break; + } + case 1:{ + // Green + bgColor = 0x00FF00; + } + case 2:{ + // Blue + bgColor = 0xFF0000; + } + case 3:{ + // Invalid. Use black. + bgColor = 0x000000; + } + case 4:{ + // Red + bgColor = 0x0000FF; + } + default:{ + // Invalid. Use black. + bgColor = 0x0; + } + } + + } + + var buffer = this.buffer; + for(var i=0;i<256*240;i++) { + buffer[i] = bgColor; + } + var pixrendered = this.pixrendered; + for(var i=0;i<pixrendered.length;i++) { + pixrendered[i]=65; + } + + }, + + endFrame: function(){ + + var buffer = this.buffer; + + // Draw spr#0 hit coordinates: + if(this.showSpr0Hit){ + // Spr 0 position: + if(this.sprX[0]>=0 && this.sprX[0]<256 && this.sprY[0]>=0 && this.sprY[0]<240){ + for(var i=0;i<256;i++){ + buffer[(this.sprY[0]<<8)+i] = 0xFF5555; + } + for(var i=0;i<240;i++){ + buffer[(i<<8)+this.sprX[0]] = 0xFF5555; + } + } + // Hit position: + if(this.spr0HitX>=0 && this.spr0HitX<256 && this.spr0HitY>=0 && this.spr0HitY<240){ + for(var i=0;i<256;i++){ + buffer[(this.spr0HitY<<8)+i] = 0x55FF55; + } + for(var i=0;i<240;i++){ + buffer[(i<<8)+this.spr0HitX] = 0x55FF55; + } + } + } + + // This is a bit lazy.. + // if either the sprites or the background should be clipped, + // both are clipped after rendering is finished. + if(this.clipToTvSize || this.f_bgClipping==0 || this.f_spClipping==0){ + // Clip left 8-pixels column: + for(var y=0;y<240;y++){ + for(var x=0;x<8;x++){ + buffer[(y<<8)+x] = 0; + } + } + } + + if(this.clipToTvSize){ + // Clip right 8-pixels column too: + for(var y=0;y<240;y++){ + for(var x=0;x<8;x++){ + buffer[(y<<8)+255-x] = 0; + } + } + } + + // Clip top and bottom 8 pixels: + if(this.clipToTvSize){ + for(var y=0;y<8;y++){ + for(var x=0;x<256;x++){ + buffer[(y<<8)+x] = 0; + buffer[((239-y)<<8)+x] = 0; + } + } + } + + if (this.nes.opts.showDisplay) { + var imageData = this.canvasImageData.data; + var prevBuffer = this.prevBuffer; + + for (var i=0;i<256*240;i++) { + var pixel = buffer[i]; + + if (pixel != prevBuffer[i]) { + var j = i*4; + imageData[j] = pixel&0xFF; + imageData[j+1] = (pixel>>8)&0xFF; + imageData[j+2] = (pixel>>16)&0xFF; + prevBuffer[i] = pixel; + } + } + + this.canvasContext.putImageData(this.canvasImageData, 0, 0); + } + }, + + updateControlReg1: function(value){ + + this.triggerRendering(); + + this.f_nmiOnVblank = (value>>7)&1; + this.f_spriteSize = (value>>5)&1; + this.f_bgPatternTable = (value>>4)&1; + this.f_spPatternTable = (value>>3)&1; + this.f_addrInc = (value>>2)&1; + this.f_nTblAddress = value&3; + + this.regV = (value>>1)&1; + this.regH = value&1; + this.regS = (value>>4)&1; + + }, + + updateControlReg2: function(value){ + + this.triggerRendering(); + + this.f_color = (value>>5)&7; + this.f_spVisibility = (value>>4)&1; + this.f_bgVisibility = (value>>3)&1; + this.f_spClipping = (value>>2)&1; + this.f_bgClipping = (value>>1)&1; + this.f_dispType = value&1; + + if(this.f_dispType == 0){ + this.palTable.setEmphasis(this.f_color); + } + this.updatePalettes(); + }, + + setStatusFlag: function(flag, value){ + var n = 1<<flag; + this.nes.cpu.mem[0x2002] = + ((this.nes.cpu.mem[0x2002] & (255-n)) | (value?n:0)); + }, + + // CPU Register $2002: + // Read the Status Register. + readStatusRegister: function(){ + + var tmp = this.nes.cpu.mem[0x2002]; + + // Reset scroll & VRAM Address toggle: + this.firstWrite = true; + + // Clear VBlank flag: + this.setStatusFlag(this.STATUS_VBLANK,false); + + // Fetch status data: + return tmp; + + }, + + // CPU Register $2003: + // Write the SPR-RAM address that is used for sramWrite (Register 0x2004 in CPU memory map) + writeSRAMAddress: function(address){ + this.sramAddress = address; + }, + + // CPU Register $2004 (R): + // Read from SPR-RAM (Sprite RAM). + // The address should be set first. + sramLoad: function(){ + /*short tmp = sprMem.load(sramAddress); + sramAddress++; // Increment address + sramAddress%=0x100; + return tmp;*/ + return this.spriteMem[this.sramAddress] + }, + + // CPU Register $2004 (W): + // Write to SPR-RAM (Sprite RAM). + // The address should be set first. + sramWrite: function(value){ + this.spriteMem[this.sramAddress] = value; + this.spriteRamWriteUpdate(this.sramAddress,value); + this.sramAddress++; // Increment address + this.sramAddress %= 0x100; + }, + + // CPU Register $2005: + // Write to scroll registers. + // The first write is the vertical offset, the second is the + // horizontal offset: + scrollWrite: function(value){ + this.triggerRendering(); + + if(this.firstWrite){ + // First write, horizontal scroll: + this.regHT = (value>>3)&31; + this.regFH = value&7; + + }else{ + + // Second write, vertical scroll: + this.regFV = value&7; + this.regVT = (value>>3)&31; + + } + this.firstWrite = !this.firstWrite; + + }, + + // CPU Register $2006: + // Sets the adress used when reading/writing from/to VRAM. + // The first write sets the high byte, the second the low byte. + writeVRAMAddress: function(address){ + + if(this.firstWrite){ + + this.regFV = (address>>4)&3; + this.regV = (address>>3)&1; + this.regH = (address>>2)&1; + this.regVT = (this.regVT&7) | ((address&3)<<3); + + }else{ + this.triggerRendering(); + + this.regVT = (this.regVT&24) | ((address>>5)&7); + this.regHT = address&31; + + this.cntFV = this.regFV; + this.cntV = this.regV; + this.cntH = this.regH; + this.cntVT = this.regVT; + this.cntHT = this.regHT; + + this.checkSprite0(this.scanline-20); + + } + + this.firstWrite = !this.firstWrite; + + // Invoke mapper latch: + this.cntsToAddress(); + if(this.vramAddress < 0x2000){ + this.nes.mmap.latchAccess(this.vramAddress); + } + }, + + // CPU Register $2007(R): + // Read from PPU memory. The address should be set first. + vramLoad: function(){ + + this.cntsToAddress(); + this.regsToAddress(); + + // If address is in range 0x0000-0x3EFF, return buffered values: + if(this.vramAddress <= 0x3EFF){ + + var tmp = this.vramBufferedReadValue; + + // Update buffered value: + if(this.vramAddress < 0x2000){ + this.vramBufferedReadValue = this.vramMem[this.vramAddress]; + }else{ + this.vramBufferedReadValue = this.mirroredLoad(this.vramAddress); + } + + // Mapper latch access: + if(this.vramAddress < 0x2000){ + this.nes.mmap.latchAccess(this.vramAddress); + } + + // Increment by either 1 or 32, depending on d2 of Control Register 1: + this.vramAddress += (this.f_addrInc==1?32:1); + + this.cntsFromAddress(); + this.regsFromAddress(); + return tmp; // Return the previous buffered value. + + } + + // No buffering in this mem range. Read normally. + var tmp = this.mirroredLoad(this.vramAddress); + + // Increment by either 1 or 32, depending on d2 of Control Register 1: + this.vramAddress += (this.f_addrInc==1?32:1); + + this.cntsFromAddress(); + this.regsFromAddress(); + + return tmp; + + }, + + // CPU Register $2007(W): + // Write to PPU memory. The address should be set first. + vramWrite: function(value){ + + this.triggerRendering(); + this.cntsToAddress(); + this.regsToAddress(); + + if(this.vramAddress >= 0x2000){ + // Mirroring is used. + this.mirroredWrite(this.vramAddress,value); + }else{ + + // Write normally. + this.writeMem(this.vramAddress,value); + + // Invoke mapper latch: + this.nes.mmap.latchAccess(this.vramAddress); + + } + + // Increment by either 1 or 32, depending on d2 of Control Register 1: + this.vramAddress += (this.f_addrInc==1?32:1); + this.regsFromAddress(); + this.cntsFromAddress(); + + }, + + // CPU Register $4014: + // Write 256 bytes of main memory + // into Sprite RAM. + sramDMA: function(value){ + var baseAddress = value * 0x100; + var data; + for(var i=this.sramAddress; i < 256; i++){ + data = this.nes.cpu.mem[baseAddress+i]; + this.spriteMem[i] = data; + this.spriteRamWriteUpdate(i, data); + } + + this.nes.cpu.haltCycles(513); + + }, + + // Updates the scroll registers from a new VRAM address. + regsFromAddress: function(){ + + var address = (this.vramTmpAddress>>8)&0xFF; + this.regFV = (address>>4)&7; + this.regV = (address>>3)&1; + this.regH = (address>>2)&1; + this.regVT = (this.regVT&7) | ((address&3)<<3); + + address = this.vramTmpAddress&0xFF; + this.regVT = (this.regVT&24) | ((address>>5)&7); + this.regHT = address&31; + }, + + // Updates the scroll registers from a new VRAM address. + cntsFromAddress: function(){ + + var address = (this.vramAddress>>8)&0xFF; + this.cntFV = (address>>4)&3; + this.cntV = (address>>3)&1; + this.cntH = (address>>2)&1; + this.cntVT = (this.cntVT&7) | ((address&3)<<3); + + address = this.vramAddress&0xFF; + this.cntVT = (this.cntVT&24) | ((address>>5)&7); + this.cntHT = address&31; + + }, + + regsToAddress: function(){ + var b1 = (this.regFV&7)<<4; + b1 |= (this.regV&1)<<3; + b1 |= (this.regH&1)<<2; + b1 |= (this.regVT>>3)&3; + + var b2 = (this.regVT&7)<<5; + b2 |= this.regHT&31; + + this.vramTmpAddress = ((b1<<8) | b2)&0x7FFF; + }, + + cntsToAddress: function(){ + var b1 = (this.cntFV&7)<<4; + b1 |= (this.cntV&1)<<3; + b1 |= (this.cntH&1)<<2; + b1 |= (this.cntVT>>3)&3; + + var b2 = (this.cntVT&7)<<5; + b2 |= this.cntHT&31; + + this.vramAddress = ((b1<<8) | b2)&0x7FFF; + }, + + incTileCounter: function(count){ + for(var i=count; i!=0; i--){ + this.cntHT++; + if(this.cntHT==32){ + this.cntHT=0; + this.cntVT++; + if(this.cntVT>=30){ + this.cntH++; + if(this.cntH==2){ + this.cntH=0; + this.cntV++; + if(this.cntV==2){ + this.cntV=0; + this.cntFV++; + this.cntFV&=0x7; + } + } + } + } + } + }, + + // Reads from memory, taking into account + // mirroring/mapping of address ranges. + mirroredLoad: function(address) { + return this.vramMem[this.vramMirrorTable[address]]; + }, + + // Writes to memory, taking into account + // mirroring/mapping of address ranges. + mirroredWrite: function(address, value){ + if(address>=0x3f00 && address<0x3f20){ + // Palette write mirroring. + if(address==0x3F00 || address==0x3F10){ + this.writeMem(0x3F00,value); + this.writeMem(0x3F10,value); + + }else if(address==0x3F04 || address==0x3F14){ + + this.writeMem(0x3F04,value); + this.writeMem(0x3F14,value); + + }else if(address==0x3F08 || address==0x3F18){ + + this.writeMem(0x3F08,value); + this.writeMem(0x3F18,value); + + }else if(address==0x3F0C || address==0x3F1C){ + + this.writeMem(0x3F0C,value); + this.writeMem(0x3F1C,value); + + }else{ + this.writeMem(address,value); + } + + }else{ + + // Use lookup table for mirrored address: + if(address<this.vramMirrorTable.length){ + this.writeMem(this.vramMirrorTable[address],value); + }else{ + // FIXME + alert("Invalid VRAM address: "+address.toString(16)); + } + + } + }, + + triggerRendering: function(){ + if(this.scanline >= 21 && this.scanline <= 260){ + // Render sprites, and combine: + this.renderFramePartially( + this.lastRenderedScanline+1, + this.scanline-21-this.lastRenderedScanline + ); + + // Set last rendered scanline: + this.lastRenderedScanline = this.scanline-21; + } + }, + + renderFramePartially: function(startScan, scanCount){ + if(this.f_spVisibility == 1){ + this.renderSpritesPartially(startScan,scanCount,true); + } + + if(this.f_bgVisibility == 1){ + var si = startScan<<8; + var ei = (startScan+scanCount)<<8; + if(ei>0xF000) ei=0xF000; + var buffer = this.buffer; + var bgbuffer = this.bgbuffer; + var pixrendered = this.pixrendered; + for(var destIndex=si;destIndex<ei;destIndex++){ + if(pixrendered[destIndex]>0xFF){ + buffer[destIndex] = bgbuffer[destIndex]; + } + } + } + + if(this.f_spVisibility == 1){ + this.renderSpritesPartially(startScan,scanCount,false); + } + + this.validTileData = false; + }, + + renderBgScanline: function(bgbuffer, scan){ + + var baseTile = (this.regS==0?0:256); + var destIndex = (scan<<8)-this.regFH; + + this.curNt = this.ntable1[this.cntV+this.cntV+this.cntH]; + + this.cntHT = this.regHT; + this.cntH = this.regH; + this.curNt = this.ntable1[this.cntV+this.cntV+this.cntH]; + + if(scan<240 && (scan-this.cntFV)>=0){ + + var tscanoffset = this.cntFV<<3; + var scantile = this.scantile; + var attrib = this.attrib; + var ptTile = this.ptTile; + var nameTable = this.nameTable; + var imgPalette = this.imgPalette; + var pixrendered = this.pixrendered; + var targetBuffer = bgbuffer ? this.bgbuffer : this.buffer; + + var t, tpix, att, col; + + for(var tile=0;tile<32;tile++){ + + if(scan>=0){ + + // Fetch tile & attrib data: + if(this.validTileData){ + // Get data from array: + t = scantile[tile]; + tpix = t.pix; + att = attrib[tile]; + }else{ + // Fetch data: + t = ptTile[baseTile+nameTable[this.curNt].getTileIndex(this.cntHT,this.cntVT)]; + tpix = t.pix; + att = nameTable[this.curNt].getAttrib(this.cntHT,this.cntVT); + scantile[tile] = t; + attrib[tile] = att; + } + + // Render tile scanline: + var sx = 0; + var x = (tile<<3)-this.regFH; + + if(x>-8){ + if(x<0){ + destIndex-=x; + sx = -x; + } + if(t.opaque[this.cntFV]){ + for(;sx<8;sx++){ + var pix = imgPalette[tpix[tscanoffset+sx]+att]; + targetBuffer[destIndex] = pix; + pixrendered[destIndex] |= 256; + destIndex++; + } + }else{ + for(;sx<8;sx++){ + col = tpix[tscanoffset+sx]; + if(col != 0){ + var pix = imgPalette[col+att]; + targetBuffer[destIndex] = pix; + pixrendered[destIndex] |= 256; + } + destIndex++; + } + } + } + + } + + // Increase Horizontal Tile Counter: + if(++this.cntHT==32){ + this.cntHT=0; + this.cntH++; + this.cntH%=2; + this.curNt = this.ntable1[(this.cntV<<1)+this.cntH]; + } + + + } + + // Tile data for one row should now have been fetched, + // so the data in the array is valid. + this.validTileData = true; + + } + + // update vertical scroll: + this.cntFV++; + if(this.cntFV==8){ + this.cntFV = 0; + this.cntVT++; + if(this.cntVT==30){ + this.cntVT = 0; + this.cntV++; + this.cntV%=2; + this.curNt = this.ntable1[(this.cntV<<1)+this.cntH]; + }else if(this.cntVT==32){ + this.cntVT = 0; + } + + // Invalidate fetched data: + this.validTileData = false; + + } + }, + + renderSpritesPartially: function(startscan, scancount, bgPri){ + if(this.f_spVisibility==1){ + + var sprT1,sprT2; + + for(var i=0;i<64;i++){ + if(this.bgPriority[i]==bgPri && this.sprX[i]>=0 && this.sprX[i]<256 && this.sprY[i]+8>=startscan && this.sprY[i]<startscan+scancount){ + // Show sprite. + if(this.f_spriteSize == 0){ + // 8x8 sprites + + this.srcy1 = 0; + this.srcy2 = 8; + + if(this.sprY[i]<startscan){ + this.srcy1 = startscan - this.sprY[i]-1; + } + + if(this.sprY[i]+8 > startscan+scancount){ + this.srcy2 = startscan+scancount-this.sprY[i]+1; + } + + if(this.f_spPatternTable==0){ + this.ptTile[this.sprTile[i]].render(this.buffer, + 0, this.srcy1, 8, this.srcy2, this.sprX[i], + this.sprY[i]+1, this.sprCol[i], this.sprPalette, + this.horiFlip[i], this.vertFlip[i], i, + this.pixrendered + ); + }else{ + this.ptTile[this.sprTile[i]+256].render(this.buffer, 0, this.srcy1, 8, this.srcy2, this.sprX[i], this.sprY[i]+1, this.sprCol[i], this.sprPalette, this.horiFlip[i], this.vertFlip[i], i, this.pixrendered); + } + }else{ + // 8x16 sprites + var top = this.sprTile[i]; + if((top&1)!=0){ + top = this.sprTile[i]-1+256; + } + + var srcy1 = 0; + var srcy2 = 8; + + if(this.sprY[i]<startscan){ + srcy1 = startscan - this.sprY[i]-1; + } + + if(this.sprY[i]+8 > startscan+scancount){ + srcy2 = startscan+scancount-this.sprY[i]; + } + + this.ptTile[top+(this.vertFlip[i]?1:0)].render( + this.buffer, + 0, + srcy1, + 8, + srcy2, + this.sprX[i], + this.sprY[i]+1, + this.sprCol[i], + this.sprPalette, + this.horiFlip[i], + this.vertFlip[i], + i, + this.pixrendered + ); + + var srcy1 = 0; + var srcy2 = 8; + + if(this.sprY[i]+8<startscan){ + srcy1 = startscan - (this.sprY[i]+8+1); + } + + if(this.sprY[i]+16 > startscan+scancount){ + srcy2 = startscan+scancount-(this.sprY[i]+8); + } + + this.ptTile[top+(this.vertFlip[i]?0:1)].render( + this.buffer, + 0, + srcy1, + 8, + srcy2, + this.sprX[i], + this.sprY[i]+1+8, + this.sprCol[i], + this.sprPalette, + this.horiFlip[i], + this.vertFlip[i], + i, + this.pixrendered + ); + + } + } + } + } + }, + + checkSprite0: function(scan){ + + this.spr0HitX = -1; + this.spr0HitY = -1; + + var toffset; + var tIndexAdd = (this.f_spPatternTable==0?0:256); + var x,y; + var bufferIndex; + var col; + var bgPri; + var t; + + x = this.sprX[0]; + y = this.sprY[0]+1; + + if(this.f_spriteSize==0){ + // 8x8 sprites. + + // Check range: + if(y<=scan && y+8>scan && x>=-7 && x<256){ + + // Sprite is in range. + // Draw scanline: + t = this.ptTile[this.sprTile[0]+tIndexAdd]; + col = this.sprCol[0]; + bgPri = this.bgPriority[0]; + + if(this.vertFlip[0]){ + toffset = 7-(scan-y); + }else{ + toffset = scan-y; + } + toffset*=8; + + bufferIndex = scan*256+x; + if(this.horiFlip[0]){ + for(var i=7;i>=0;i--){ + if(x>=0 && x<256){ + if(bufferIndex>=0 && bufferIndex<61440 && this.pixrendered[bufferIndex]!=0){ + if(t.pix[toffset+i] != 0){ + this.spr0HitX = bufferIndex%256; + this.spr0HitY = scan; + return true; + } + } + } + x++; + bufferIndex++; + } + + }else{ + for(var i=0;i<8;i++){ + if(x>=0 && x<256){ + if(bufferIndex>=0 && bufferIndex<61440 && this.pixrendered[bufferIndex]!=0){ + if(t.pix[toffset+i] != 0){ + this.spr0HitX = bufferIndex%256; + this.spr0HitY = scan; + return true; + } + } + } + x++; + bufferIndex++; + } + } + } + }else{ + // 8x16 sprites: + + // Check range: + if(y<=scan && y+16>scan && x>=-7 && x<256){ + + // Sprite is in range. + // Draw scanline: + + if(this.vertFlip[0]){ + toffset = 15-(scan-y); + }else{ + toffset = scan-y; + } + + if(toffset<8){ + // first half of sprite. + t = this.ptTile[this.sprTile[0]+(this.vertFlip[0]?1:0)+((this.sprTile[0]&1)!=0?255:0)]; + }else{ + // second half of sprite. + t = this.ptTile[this.sprTile[0]+(this.vertFlip[0]?0:1)+((this.sprTile[0]&1)!=0?255:0)]; + if(this.vertFlip[0]){ + toffset = 15-toffset; + }else{ + toffset -= 8; + } + } + toffset*=8; + col = this.sprCol[0]; + bgPri = this.bgPriority[0]; + + bufferIndex = scan*256+x; + if(this.horiFlip[0]){ + for(var i=7;i>=0;i--){ + if(x>=0 && x<256){ + if(bufferIndex>=0 && bufferIndex<61440 && this.pixrendered[bufferIndex]!=0){ + if(t.pix[toffset+i] != 0){ + this.spr0HitX = bufferIndex%256; + this.spr0HitY = scan; + return true; + } + } + } + x++; + bufferIndex++; + } + + }else{ + + for(var i=0;i<8;i++){ + if(x>=0 && x<256){ + if(bufferIndex>=0 && bufferIndex<61440 && this.pixrendered[bufferIndex]!=0){ + if(t.pix[toffset+i] != 0){ + this.spr0HitX = bufferIndex%256; + this.spr0HitY = scan; + return true; + } + } + } + x++; + bufferIndex++; + } + + } + + } + + } + + return false; + }, + + // This will write to PPU memory, and + // update internally buffered data + // appropriately. + writeMem: function(address, value){ + + this.vramMem[address] = value; + + // Update internally buffered data: + if(address < 0x2000){ + + this.vramMem[address] = value; + this.patternWrite(address,value); + + }else if(address >=0x2000 && address <0x23c0){ + + this.nameTableWrite(this.ntable1[0],address-0x2000,value); + + }else if(address >=0x23c0 && address <0x2400){ + + this.attribTableWrite(this.ntable1[0],address-0x23c0,value); + + }else if(address >=0x2400 && address <0x27c0){ + + this.nameTableWrite(this.ntable1[1],address-0x2400,value); + + }else if(address >=0x27c0 && address <0x2800){ + + this.attribTableWrite(this.ntable1[1],address-0x27c0,value); + + }else if(address >=0x2800 && address <0x2bc0){ + + this.nameTableWrite(this.ntable1[2],address-0x2800,value); + + }else if(address >=0x2bc0 && address <0x2c00){ + + this.attribTableWrite(this.ntable1[2],address-0x2bc0,value); + + }else if(address >=0x2c00 && address <0x2fc0){ + + this.nameTableWrite(this.ntable1[3],address-0x2c00,value); + + }else if(address >=0x2fc0 && address <0x3000){ + + this.attribTableWrite(this.ntable1[3],address-0x2fc0,value); + + }else if(address >=0x3f00 && address <0x3f20){ + + this.updatePalettes(); + + } + }, + + // Reads data from $3f00 to $f20 + // into the two buffered palettes. + updatePalettes: function(){ + + for(var i=0;i<16;i++){ + if (this.f_dispType == 0) { + this.imgPalette[i] = this.palTable.getEntry( + this.vramMem[0x3f00+i] & 63 + ); + } + else { + this.imgPalette[i] = this.palTable.getEntry( + this.vramMem[0x3f00+i] & 32 + ); + } + } + for(var i=0;i<16;i++){ + if (this.f_dispType == 0) { + this.sprPalette[i] = this.palTable.getEntry( + this.vramMem[0x3f10+i] & 63 + ); + } + else { + this.sprPalette[i] = this.palTable.getEntry( + this.vramMem[0x3f10+i] & 32 + ); + } + } + }, + + // Updates the internal pattern + // table buffers with this new byte. + // In vNES, there is a version of this with 4 arguments which isn't used. + patternWrite: function(address, value){ + var tileIndex = parseInt(address/16); + var leftOver = address%16; + if (leftOver<8) { + this.ptTile[tileIndex].setScanline( + leftOver, + value, + this.vramMem[address+8] + ); + } + else { + this.ptTile[tileIndex].setScanline( + leftOver-8, + this.vramMem[address-8], + value + ); + } + }, + + // Updates the internal name table buffers + // with this new byte. + nameTableWrite: function(index, address, value){ + this.nameTable[index].tile[address] = value; + + // Update Sprite #0 hit: + //updateSpr0Hit(); + this.checkSprite0(this.scanline-20); + }, + + // Updates the internal pattern + // table buffers with this new attribute + // table byte. + attribTableWrite: function(index, address, value){ + this.nameTable[index].writeAttrib(address,value); + }, + + // Updates the internally buffered sprite + // data with this new byte of info. + spriteRamWriteUpdate: function(address, value){ + var tIndex = parseInt(address/4); + + if(tIndex == 0){ + //updateSpr0Hit(); + this.checkSprite0(this.scanline-20); + } + + if(address%4 == 0){ + // Y coordinate + this.sprY[tIndex] = value; + }else if(address%4 == 1){ + // Tile index + this.sprTile[tIndex] = value; + }else if(address%4 == 2){ + // Attributes + this.vertFlip[tIndex] = ((value&0x80)!=0); + this.horiFlip[tIndex] = ((value&0x40)!=0); + this.bgPriority[tIndex] = ((value&0x20)!=0); + this.sprCol[tIndex] = (value&3)<<2; + + }else if(address%4 == 3){ + // X coordinate + this.sprX[tIndex] = value; + } + }, + + doNMI: function(){ + // Set VBlank flag: + this.setStatusFlag(this.STATUS_VBLANK,true); + //nes.getCpu().doNonMaskableInterrupt(); + this.nes.cpu.requestIrq(this.nes.cpu.IRQ_NMI); + } +} + +NES.PPU.NameTable = function(width, height, name) { + this.width = width; + this.height = height; + this.name = name; + + this.tile = new Array(width*height); + this.attrib = new Array(width*height); +} + +NES.PPU.NameTable.prototype = { + getTileIndex: function(x, y){ + return this.tile[y*this.width+x]; + }, + + getAttrib: function(x, y){ + return this.attrib[y*this.width+x]; + }, + + writeAttrib: function(index, value){ + var basex = (index % 8) * 4; + var basey = parseInt(index / 8) * 4; + var add; + var tx, ty; + var attindex; + + for(var sqy=0;sqy<2;sqy++){ + for(var sqx=0;sqx<2;sqx++){ + add = (value>>(2*(sqy*2+sqx)))&3; + for(var y=0;y<2;y++){ + for(var x=0;x<2;x++){ + tx = basex+sqx*2+x; + ty = basey+sqy*2+y; + attindex = ty*this.width+tx; + this.attrib[ty*this.width+tx] = (add<<2)&12; + } + } + } + } + } +} + + +NES.PPU.PaletteTable = function() { + this.curTable = new Array(64); + this.emphTable = new Array(8); + this.currentEmph = -1; +} + +NES.PPU.PaletteTable.prototype = { + reset: function() { + this.setEmphasis(0); + }, + + loadNTSCPalette: function() { + this.curTable = [0x525252, 0xB40000, 0xA00000, 0xB1003D, 0x740069, 0x00005B, 0x00005F, 0x001840, 0x002F10, 0x084A08, 0x006700, 0x124200, 0x6D2800, 0x000000, 0x000000, 0x000000, 0xC4D5E7, 0xFF4000, 0xDC0E22, 0xFF476B, 0xD7009F, 0x680AD7, 0x0019BC, 0x0054B1, 0x006A5B, 0x008C03, 0x00AB00, 0x2C8800, 0xA47200, 0x000000, 0x000000, 0x000000, 0xF8F8F8, 0xFFAB3C, 0xFF7981, 0xFF5BC5, 0xFF48F2, 0xDF49FF, 0x476DFF, 0x00B4F7, 0x00E0FF, 0x00E375, 0x03F42B, 0x78B82E, 0xE5E218, 0x787878, 0x000000, 0x000000, 0xFFFFFF, 0xFFF2BE, 0xF8B8B8, 0xF8B8D8, 0xFFB6FF, 0xFFC3FF, 0xC7D1FF, 0x9ADAFF, 0x88EDF8, 0x83FFDD, 0xB8F8B8, 0xF5F8AC, 0xFFFFB0, 0xF8D8F8, 0x000000, 0x000000]; + this.makeTables(); + this.setEmphasis(0); + }, + + loadPALPalette: function() { + this.curTable = [0x525252, 0xB40000, 0xA00000, 0xB1003D, 0x740069, 0x00005B, 0x00005F, 0x001840, 0x002F10, 0x084A08, 0x006700, 0x124200, 0x6D2800, 0x000000, 0x000000, 0x000000, 0xC4D5E7, 0xFF4000, 0xDC0E22, 0xFF476B, 0xD7009F, 0x680AD7, 0x0019BC, 0x0054B1, 0x006A5B, 0x008C03, 0x00AB00, 0x2C8800, 0xA47200, 0x000000, 0x000000, 0x000000, 0xF8F8F8, 0xFFAB3C, 0xFF7981, 0xFF5BC5, 0xFF48F2, 0xDF49FF, 0x476DFF, 0x00B4F7, 0x00E0FF, 0x00E375, 0x03F42B, 0x78B82E, 0xE5E218, 0x787878, 0x000000, 0x000000, 0xFFFFFF, 0xFFF2BE, 0xF8B8B8, 0xF8B8D8, 0xFFB6FF, 0xFFC3FF, 0xC7D1FF, 0x9ADAFF, 0x88EDF8, 0x83FFDD, 0xB8F8B8, 0xF5F8AC, 0xFFFFB0, 0xF8D8F8, 0x000000, 0x000000]; + this.makeTables(); + this.setEmphasis(0); + }, + + makeTables: function(){ + var r,g,b,col; + + // Calculate a table for each possible emphasis setting: + for(var emph=0;emph<8;emph++){ + + // Determine color component factors: + var rFactor=1.0, gFactor=1.0, bFactor=1.0; + if((emph&1)!=0){ + rFactor = 0.75; + bFactor = 0.75; + } + if((emph&2)!=0){ + rFactor = 0.75; + gFactor = 0.75; + } + if((emph&4)!=0){ + gFactor = 0.75; + bFactor = 0.75; + } + + this.emphTable[emph] = new Array(64); + + // Calculate table: + for(var i=0;i<64;i++){ + col = this.curTable[i]; + r = parseInt(this.getRed(col) * rFactor); + g = parseInt(this.getGreen(col) * gFactor); + b = parseInt(this.getBlue(col) * bFactor); + this.emphTable[emph][i] = this.getRgb(r,g,b); + } + } + }, + + setEmphasis: function(emph){ + if(emph != this.currentEmph){ + this.currentEmph = emph; + for(var i=0;i<64;i++){ + this.curTable[i] = this.emphTable[emph][i]; + } + } + }, + + getEntry: function(yiq){ + return this.curTable[yiq]; + }, + + getRed: function(rgb){ + return (rgb>>16)&0xFF; + }, + + getGreen: function(rgb){ + return (rgb>>8)&0xFF; + }, + + getBlue: function(rgb){ + return rgb&0xFF; + }, + + getRgb: function(r, g, b){ + return ((r<<16)|(g<<8)|(b)); + }, + + loadDefaultPalette: function(){ + this.curTable[ 0] = this.getRgb(117,117,117); + this.curTable[ 1] = this.getRgb( 39, 27,143); + this.curTable[ 2] = this.getRgb( 0, 0,171); + this.curTable[ 3] = this.getRgb( 71, 0,159); + this.curTable[ 4] = this.getRgb(143, 0,119); + this.curTable[ 5] = this.getRgb(171, 0, 19); + this.curTable[ 6] = this.getRgb(167, 0, 0); + this.curTable[ 7] = this.getRgb(127, 11, 0); + this.curTable[ 8] = this.getRgb( 67, 47, 0); + this.curTable[ 9] = this.getRgb( 0, 71, 0); + this.curTable[10] = this.getRgb( 0, 81, 0); + this.curTable[11] = this.getRgb( 0, 63, 23); + this.curTable[12] = this.getRgb( 27, 63, 95); + this.curTable[13] = this.getRgb( 0, 0, 0); + this.curTable[14] = this.getRgb( 0, 0, 0); + this.curTable[15] = this.getRgb( 0, 0, 0); + this.curTable[16] = this.getRgb(188,188,188); + this.curTable[17] = this.getRgb( 0,115,239); + this.curTable[18] = this.getRgb( 35, 59,239); + this.curTable[19] = this.getRgb(131, 0,243); + this.curTable[20] = this.getRgb(191, 0,191); + this.curTable[21] = this.getRgb(231, 0, 91); + this.curTable[22] = this.getRgb(219, 43, 0); + this.curTable[23] = this.getRgb(203, 79, 15); + this.curTable[24] = this.getRgb(139,115, 0); + this.curTable[25] = this.getRgb( 0,151, 0); + this.curTable[26] = this.getRgb( 0,171, 0); + this.curTable[27] = this.getRgb( 0,147, 59); + this.curTable[28] = this.getRgb( 0,131,139); + this.curTable[29] = this.getRgb( 0, 0, 0); + this.curTable[30] = this.getRgb( 0, 0, 0); + this.curTable[31] = this.getRgb( 0, 0, 0); + this.curTable[32] = this.getRgb(255,255,255); + this.curTable[33] = this.getRgb( 63,191,255); + this.curTable[34] = this.getRgb( 95,151,255); + this.curTable[35] = this.getRgb(167,139,253); + this.curTable[36] = this.getRgb(247,123,255); + this.curTable[37] = this.getRgb(255,119,183); + this.curTable[38] = this.getRgb(255,119, 99); + this.curTable[39] = this.getRgb(255,155, 59); + this.curTable[40] = this.getRgb(243,191, 63); + this.curTable[41] = this.getRgb(131,211, 19); + this.curTable[42] = this.getRgb( 79,223, 75); + this.curTable[43] = this.getRgb( 88,248,152); + this.curTable[44] = this.getRgb( 0,235,219); + this.curTable[45] = this.getRgb( 0, 0, 0); + this.curTable[46] = this.getRgb( 0, 0, 0); + this.curTable[47] = this.getRgb( 0, 0, 0); + this.curTable[48] = this.getRgb(255,255,255); + this.curTable[49] = this.getRgb(171,231,255); + this.curTable[50] = this.getRgb(199,215,255); + this.curTable[51] = this.getRgb(215,203,255); + this.curTable[52] = this.getRgb(255,199,255); + this.curTable[53] = this.getRgb(255,199,219); + this.curTable[54] = this.getRgb(255,191,179); + this.curTable[55] = this.getRgb(255,219,171); + this.curTable[56] = this.getRgb(255,231,163); + this.curTable[57] = this.getRgb(227,255,163); + this.curTable[58] = this.getRgb(171,243,191); + this.curTable[59] = this.getRgb(179,255,207); + this.curTable[60] = this.getRgb(159,255,243); + this.curTable[61] = this.getRgb( 0, 0, 0); + this.curTable[62] = this.getRgb( 0, 0, 0); + this.curTable[63] = this.getRgb( 0, 0, 0); + + this.makeTables(); + this.setEmphasis(0); + } +} + +NES.PPU.Tile = function() { + // Tile data: + this.pix = new Array(64); + + this.fbIndex = null; + this.tIndex = null; + this.x = null; + this.y = null; + this.w = null; + this.h = null; + this.incX = null; + this.incY = null; + this.palIndex = null; + this.tpri = null; + this.c = null; + this.initialized = false; + this.opaque = new Array(8); +} + +NES.PPU.Tile.prototype = { + setBuffer: function(scanline){ + for(this.y=0;this.y<8;this.y++){ + this.setScanline(this.y,scanline[this.y],scanline[this.y+8]); + } + }, + + setScanline: function(sline, b1, b2){ + this.initialized = true; + this.tIndex = sline<<3; + for(this.x=0;this.x<8;this.x++){ + this.pix[this.tIndex+this.x] = ((b1>>(7-this.x))&1) + + (((b2>>(7-this.x))&1)<<1); + if(this.pix[this.tIndex+this.x]==0) this.opaque[sline]=false; + } + }, + + render: function(buffer, srcx1, srcy1, srcx2, srcy2, dx, dy, palAdd, palette, flipHorizontal, flipVertical, pri, priTable) { + + if(dx<-7 || dx>=256 || dy<-7 || dy>=240){ + return; + } + + this.w=srcx2-srcx1; + this.h=srcy2-srcy1; + + if(dx<0){ + srcx1-=dx; + } + if(dx+srcx2>=256){ + srcx2=256-dx; + } + + if(dy<0){ + srcy1-=dy; + } + if(dy+srcy2>=240){ + srcy2=240-dy; + } + + if(!flipHorizontal && !flipVertical){ + + this.fbIndex = (dy<<8)+dx; + this.tIndex = 0; + for(this.y=0;this.y<8;this.y++){ + for(this.x=0;this.x<8;this.x++){ + if(this.x>=srcx1 && this.x<srcx2 && this.y>=srcy1 && this.y<srcy2){ + this.palIndex = this.pix[this.tIndex]; + this.tpri = priTable[this.fbIndex]; + if(this.palIndex!=0 && pri<=(this.tpri&0xFF)){ + //console.log("Rendering upright tile to buffer"); + buffer[this.fbIndex] = palette[this.palIndex+palAdd]; + this.tpri = (this.tpri&0xF00)|pri; + priTable[this.fbIndex] =this.tpri; + } + } + this.fbIndex++; + this.tIndex++; + } + this.fbIndex-=8; + this.fbIndex+=256; + } + + }else if(flipHorizontal && !flipVertical){ + + this.fbIndex = (dy<<8)+dx; + this.tIndex = 7; + for(this.y=0;this.y<8;this.y++){ + for(this.x=0;this.x<8;this.x++){ + if(this.x>=srcx1 && this.x<srcx2 && this.y>=srcy1 && this.y<srcy2){ + this.palIndex = this.pix[this.tIndex]; + this.tpri = priTable[this.fbIndex]; + if(this.palIndex!=0 && pri<=(this.tpri&0xFF)){ + buffer[this.fbIndex] = palette[this.palIndex+palAdd]; + this.tpri = (this.tpri&0xF00)|pri; + priTable[this.fbIndex] =this.tpri; + } + } + this.fbIndex++; + this.tIndex--; + } + this.fbIndex-=8; + this.fbIndex+=256; + this.tIndex+=16; + } + + }else if(flipVertical && !flipHorizontal){ + + this.fbIndex = (dy<<8)+dx; + this.tIndex = 56; + for(this.y=0;this.y<8;this.y++){ + for(this.x=0;this.x<8;this.x++){ + if(this.x>=srcx1 && this.x<srcx2 && this.y>=srcy1 && this.y<srcy2){ + this.palIndex = this.pix[this.tIndex]; + this.tpri = priTable[this.fbIndex]; + if(this.palIndex!=0 && pri<=(this.tpri&0xFF)){ + buffer[this.fbIndex] = palette[this.palIndex+palAdd]; + this.tpri = (this.tpri&0xF00)|pri; + priTable[this.fbIndex] =this.tpri; + } + } + this.fbIndex++; + this.tIndex++; + } + this.fbIndex-=8; + this.fbIndex+=256; + this.tIndex-=16; + } + + }else{ + + this.fbIndex = (dy<<8)+dx; + this.tIndex = 63; + for(this.y=0;this.y<8;this.y++){ + for(this.x=0;this.x<8;this.x++){ + if(this.x>=srcx1 && this.x<srcx2 && this.y>=srcy1 && this.y<srcy2){ + this.palIndex = this.pix[this.tIndex]; + this.tpri = priTable[this.fbIndex]; + if(this.palIndex!=0 && pri<=(this.tpri&0xFF)){ + buffer[this.fbIndex] = palette[this.palIndex+palAdd]; + this.tpri = (this.tpri&0xF00)|pri; + priTable[this.fbIndex] =this.tpri; + } + } + this.fbIndex++; + this.tIndex--; + } + this.fbIndex-=8; + this.fbIndex+=256; + } + + } + + }, + + isTransparent: function(x, y){ + return (this.pix[(y<<3)+x]==0); + } +} + diff --git a/js.2/rom.js b/js.2/rom.js new file mode 100644 index 0000000..a32756b --- /dev/null +++ b/js.2/rom.js @@ -0,0 +1,201 @@ +NES.ROM = function(nes) { + this.nes = nes; + + this.mapperName = new Array(92); + + for (var i=0;i<92;i++) { + this.mapperName[i] = "Unknown Mapper"; + } + this.mapperName[ 0] = "Direct Access"; + this.mapperName[ 1] = "Nintendo MMC1"; + this.mapperName[ 2] = "UNROM"; + this.mapperName[ 3] = "CNROM"; + this.mapperName[ 4] = "Nintendo MMC3"; + this.mapperName[ 5] = "Nintendo MMC5"; + this.mapperName[ 6] = "FFE F4xxx"; + this.mapperName[ 7] = "AOROM"; + this.mapperName[ 8] = "FFE F3xxx"; + this.mapperName[ 9] = "Nintendo MMC2"; + this.mapperName[10] = "Nintendo MMC4"; + this.mapperName[11] = "Color Dreams Chip"; + this.mapperName[12] = "FFE F6xxx"; + this.mapperName[15] = "100-in-1 switch"; + this.mapperName[16] = "Bandai chip"; + this.mapperName[17] = "FFE F8xxx"; + this.mapperName[18] = "Jaleco SS8806 chip"; + this.mapperName[19] = "Namcot 106 chip"; + this.mapperName[20] = "Famicom Disk System"; + this.mapperName[21] = "Konami VRC4a"; + this.mapperName[22] = "Konami VRC2a"; + this.mapperName[23] = "Konami VRC2a"; + this.mapperName[24] = "Konami VRC6"; + this.mapperName[25] = "Konami VRC4b"; + this.mapperName[32] = "Irem G-101 chip"; + this.mapperName[33] = "Taito TC0190/TC0350"; + this.mapperName[34] = "32kB ROM switch"; + + this.mapperName[64] = "Tengen RAMBO-1 chip"; + this.mapperName[65] = "Irem H-3001 chip"; + this.mapperName[66] = "GNROM switch"; + this.mapperName[67] = "SunSoft3 chip"; + this.mapperName[68] = "SunSoft4 chip"; + this.mapperName[69] = "SunSoft5 FME-7 chip"; + this.mapperName[71] = "Camerica chip"; + this.mapperName[78] = "Irem 74HC161/32-based"; + this.mapperName[91] = "Pirate HK-SF3 chip"; +} + +NES.ROM.prototype = { + // Mirroring types: + VERTICAL_MIRRORING: 0, + HORIZONTAL_MIRRORING: 1, + FOURSCREEN_MIRRORING: 2, + SINGLESCREEN_MIRRORING: 3, + SINGLESCREEN_MIRRORING2: 4, + SINGLESCREEN_MIRRORING3: 5, + SINGLESCREEN_MIRRORING4: 6, + CHRROM_MIRRORING: 7, + + header: null, + rom: null, + vrom: null, + vromTile: null, + + romCount: null, + vromCount: null, + mirroring: null, + batteryRam: null, + trainer: null, + fourScreen: null, + mapperType: null, + valid: false, + + load: function(fileName) { + this.fileName = fileName; + if (!roms[fileName]) { + alert("ROM does not exist."); + return; + } + var data = roms[fileName]; + if (data.indexOf("NES\x1a") == -1) { + alert("Not a valid NES ROM."); + return; + } + this.header = new Array(16); + for (var i = 0; i < 16; i++) { + this.header[i] = data.charCodeAt(i); + } + this.romCount = this.header[4]; + this.vromCount = this.header[5]*2; // Get the number of 4kB banks, not 8kB + this.mirroring = ((this.header[6] & 1) !=0 ? 1 : 0); + this.batteryRam = (this.header[6] & 2) != 0; + this.trainer = (this.header[6] & 4) != 0; + this.fourScreen = (this.header[6] & 8) != 0; + this.mapperType = (this.header[6] >> 4) | (this.header[7] & 0xF0); + /* TODO + if (this.batteryRam) + this.loadBatteryRam();*/ + // Check whether byte 8-15 are zero's: + var foundError = false; + for (var i=8; i<16; i++) { + if (this.header[i] != 0) { + foundError = true; + break; + } + } + if (foundError) { + mapperType &= 0xF; // Ignore byte 7 + } + // Load PRG-ROM banks: + this.rom = new Array(this.romCount); + var offset = 16; + for (var i=0; i < this.romCount; i++) { + this.rom[i] = new Array(16384); + for (var j=0; j < 16384; j++) { + if (offset+j >= data.length) { + break; + } + this.rom[i][j] = data.charCodeAt(offset + j); + } + offset += 16384; + } + // Load CHR-ROM banks: + this.vrom = new Array(this.vromCount); + for (var i=0; i < this.vromCount; i++) { + this.vrom[i] = new Array(4096); + for (var j=0; j < 4096; j++) { + if (offset+j >= data.length){ + break; + } + this.vrom[i][j] = data.charCodeAt(offset + j); + } + offset += 4096; + } + + // Create VROM tiles: + this.vromTile = new Array(this.vromCount); + for (var i=0; i < this.vromCount; i++) { + this.vromTile[i] = new Array(256); + for (var j=0; j < 256; j++) { + this.vromTile[i][j] = new NES.PPU.Tile(); + } + } + + // Convert CHR-ROM banks to tiles: + var tileIndex; + var leftOver; + for (var v=0; v < this.vromCount; v++) { + for (var i=0; i < 4096; i++) { + tileIndex = i >> 4; + leftOver = i % 16; + if (leftOver < 8) { + this.vromTile[v][tileIndex].setScanline( + leftOver, + this.vrom[v][i], + this.vrom[v][i+8] + ); + } + else { + this.vromTile[v][tileIndex].setScanline( + leftOver-8, + this.vrom[v][i-8], + this.vrom[v][i] + ); + } + } + } + + this.valid = true; + }, + + getMirroringType: function() { + if (this.fourScreen) { + return this.FOURSCREEN_MIRRORING; + } + if (this.mirroring == 0) { + return this.HORIZONTAL_MIRRORING; + } + return this.VERTICAL_MIRRORING; + }, + + getMapperName: function() { + if (this.mapperType >= 0 && this.mapperType < this.mapperName.length) { + return this.mapperName[this.mapperType]; + } + return "Unknown Mapper, "+this.mapperType; + }, + + mapperSupported: function() { + return new Boolean(NES.Mappers[this.mapperType]); + }, + + createMapper: function() { + if (this.mapperSupported()) { + return new NES.Mappers[this.mapperType](this.nes); + } + else { + alert("Mapper not supported: "+this.mapperType); + return null; + } + } +} diff --git a/js.2/roms.js b/js.2/roms.js new file mode 100644 index 0000000..906909e --- /dev/null +++ b/js.2/roms.js @@ -0,0 +1,777 @@ +var roms_list = { + "Working": new Array( + 'Bubble Bobble (U).nes', + 'Contra (U) [!].nes', + 'Donkey Kong (JU).nes', + 'Dr. Mario (JU).nes', + 'Duck Hunt (JUE) [!].nes', + 'Golf (JU).nes', + 'Legend of Zelda, The (U) (PRG1).nes', + 'Lemmings (U).nes', + 'Lifeforce (U).nes', + 'Mario Bros. (JU) [!].nes', + 'Mega Man (U).nes', + 'Pac-Man (U) [!].nes', + 'Super Mario Bros. (JU) (PRG0) [!].nes', + 'Tennis (JU) [!].nes', + 'Tetris (U) [!].nes', + 'Tetris 2 (U) [!].nes', + 'Zelda II - The Adventure of Link (U).nes' + ), + + "Nearly Working": new Array( + 'Super Mario Bros. 3 (U) (PRG1) [!].nes' + ) + + /* + "Broken": new Array( + 'Mega Man 2 (U).nes', + 'Metroid (U) [!].nes' + ) + "Untested": new Array( + '10-Yard Fight (U).nes', + '1942 (JU) [!].nes', + '1943 - The Battle of Midway (U).nes', + '3-D Battles of World Runner, The (U).nes', + '720 (U).nes', + '8 Eyes (U).nes', + 'Abadox (U).nes', + 'Action 52 (U) [!].nes', + 'Addams Family, The (U).nes', + 'Addams Family, The - Pugsley\'s Scavenger Hunt (U).nes', + 'Advanced Dungeons & Dragons - Dragon Strike (U).nes', + 'Advanced Dungeons & Dragons - Heroes of the Lance (U).nes', + 'Advanced Dungeons & Dragons - Hillsfar (U) [!].nes', + 'Advanced Dungeons & Dragons - Pool of Radiance (U).nes', + 'Adventures in the Magic Kingdom (U).nes', + 'Adventures of Bayou Billy, The (U).nes', + 'Adventures of Captain Comic, The (U).nes', + 'Adventures of Dino Riki, The (U).nes', + 'Adventures of Lolo (U) [!].nes', + 'Adventures of Lolo 2 (U).nes', + 'Adventures of Lolo 3 (U).nes', + 'Adventures of Rad Gravity, The (U).nes', + 'Adventures of Rocky and Bullwinkle and Friends, The (U).nes', + 'Adventures of Tom Sawyer (U).nes', + 'After Burner (U).nes', + 'Air Fortress (U).nes', + 'Airwolf (U).nes', + 'Al Unser Jr. Turbo Racing (U).nes', + 'Aladdin (Unl).nes', + 'Alfred Chicken (U).nes', + 'Alien 3 (U).nes', + 'Alien Syndrome (U).nes', + 'All-Pro Basketball (U).nes', + 'Alpha Mission (U).nes', + 'Amagon (U).nes', + 'American Gladiators (U).nes', + 'Anticipation (U).nes', + 'Arch Rivals - A Basket Brawl! (U).nes', + 'Archon (U).nes', + 'Arkanoid (U).nes', + 'Arkista\'s Ring (U) [!].nes', + 'Astyanax (U).nes', + 'Athena (U).nes', + 'Athletic World (U).nes', + 'Attack of the Killer Tomatoes (U).nes', + 'Baby Boomer (U).nes', + 'Back to the Future (U).nes', + 'Back to the Future II & III (U).nes', + 'Bad Dudes (U).nes', + 'Bad News Baseball (U).nes', + 'Bad Street Brawler (U).nes', + 'Balloon Fight (JU) [!].nes', + 'Bandai Golf - Challenge Pebble Beach (U).nes', + 'Bandit Kings of Ancient China (U).nes', + 'Barbie (U) (Rev 3).nes', + 'Bard\'s Tale, The - Tales of the Unknown (U) [!].nes', + 'Barker Bill\'s Trick Shooting (U).nes', + 'Base Wars (U).nes', + 'Baseball (UE) [!].nes', + 'Baseball Simulator 1.000 (U).nes', + 'Baseball Stars (U).nes', + 'Baseball Stars II (U).nes', + 'Bases Loaded (U).nes', + 'Bases Loaded 3 (U).nes', + 'Bases Loaded 4 (U).nes', + 'Bases Loaded II (U).nes', + 'Batman (U).nes', + 'Batman - Return of the Joker (U).nes', + 'Batman Returns (U).nes', + 'Battle Chess (U).nes', + 'Battle of Olympus, The (U).nes', + 'Battle Tank (U).nes', + 'Battleship (U).nes', + 'Battletoads & Double Dragon - The Ultimate Team (U).nes', + 'Battletoads (U).nes', + 'Bee 52 (U).nes', + 'Beetlejuice (U) [!].nes', + 'Best of the Best - Championship Karate (U).nes', + 'Bible Adventures (U) (V1.3).nes', + 'Bible Buffet (U).nes', + 'Big Bird\'s Hide & Speak (U).nes', + 'Big Nose Freaks Out (U).nes', + 'Big Nose the Caveman (U).nes', + 'Bigfoot (U).nes', + 'Bill & Ted\'s Excellent Video Game Adventure (U).nes', + 'Bill Elliott\'s NASCAR Challenge (U).nes', + 'Bionic Commando (U) [!].nes', + 'Black Bass USA, The (U).nes', + 'Blackjack (U).nes', + 'Blades of Steel (U).nes', + 'Blaster Master (U).nes', + 'Blue Marlin, The (U).nes', + 'Blues Brothers, The (U).nes', + 'Bo Jackson Baseball (U).nes', + 'Bomberman (U).nes', + 'Bomberman II (U).nes', + 'Bonk\'s Adventure (U).nes', + 'Boulder Dash (U).nes', + 'Boy and His Blob, A - Trouble on Blobolonia (U).nes', + 'Bram Stoker\'s Dracula (U).nes', + 'Break Time - The National Pool Tour (U).nes', + 'BreakThru (U).nes', + 'Bubble Bath Babes (UE) [!].nes', + 'Bubble Bobble (U).nes', + 'Bubble Bobble Part 2 (U).nes', + 'Bucky O\'Hare (U) [!].nes', + 'Bugs Bunny Birthday Blowout, The (U).nes', + 'Bugs Bunny Crazy Castle, The (U).nes', + 'Bugs Bunny Fun House (U) (Prototype).nes', + 'Bump\'n\'Jump (U).nes', + 'Burai Fighter (U).nes', + 'Burger Time (U) [!].nes', + 'Cabal (U).nes', + 'Caesars Palace (U).nes', + 'California Games (U).nes', + 'California Raisins - The Grape Escape (U).nes', + 'Caltron 6-in-1 (U).nes', + 'Captain America and The Avengers (U).nes', + 'Captain Planet and The Planeteers (U).nes', + 'Captain Skyhawk (U).nes', + 'Casino Kid (U).nes', + 'Casino Kid 2 (U).nes', + 'Castelian (U).nes', + 'Castle of Deceit (U).nes', + 'Castle of Dragon (U).nes', + 'Castlequest (U).nes', + 'Castlevania (U) (PRG1).nes', + 'Castlevania II - Simon\'s Quest (U).nes', + 'Castlevania III - Dracula\'s Curse (U) [!].nes', + 'Caveman Games (U).nes', + 'Challenge of the Dragon (U).nes', + 'Championship Bowling (U) [!].nes', + 'Championship Pool (U).nes', + 'Cheetah Men II (U).nes', + 'Chessmaster, The (U).nes', + 'Chiller (U) [!].nes', + 'Chip \'n Dale Rescue Rangers (U) [!].nes', + 'Chip \'n Dale Rescue Rangers 2 (U).nes', + 'Chubby Cherub (U).nes', + 'Circus Caper (U).nes', + 'City Connection (U).nes', + 'Clash at Demonhead (U).nes', + 'Classic Concentration (U).nes', + 'Cliffhanger (U).nes', + 'Clu Clu Land (JU).nes', + 'Cobra Command (U).nes', + 'Cobra Triangle (U).nes', + 'Code Name - Viper (U).nes', + 'Color A Dinosaur (U).nes', + 'Commando (U).nes', + 'Conan (U).nes', + 'Conflict (U) [!].nes', + 'Conquest of the Crystal Palace (U).nes', + 'Contra Force (U).nes', + 'Cool World (U).nes', + 'Cowboy Kid (U).nes', + 'Crash \'n the Boys - Street Challenge (U).nes', + 'Crystal Mines (U).nes', + 'Crystalis (U).nes', + 'Cyberball (U).nes', + 'Cybernoid - The Fighting Machine (U).nes', + 'Danny Sullivan\'s Indy Heat (U).nes', + 'Darkman (U).nes', + 'Darkwing Duck (U).nes', + 'Dash Galaxy in the Alien Asylum (U).nes', + 'Day Dreamin\' Davey (U).nes', + 'Days of Thunder (U).nes', + 'Deadly Towers (U).nes', + 'Death Race (U).nes', + 'Deathbots (U).nes', + 'Defender II (U).nes', + 'Defender of the Crown (U).nes', + 'Defenders of Dynatron City (U).nes', + 'Deja Vu (U).nes', + 'Demon Sword (U).nes', + 'Desert Commander (U).nes', + 'Destination Earthstar (U).nes', + 'Destiny of an Emperor (U).nes', + 'Dick Tracy (U).nes', + 'Die Hard (U).nes', + 'Dig Dug II (U) [!].nes', + 'Digger - The Legend of the Lost City (U).nes', + 'Dirty Harry (U).nes', + 'Dizzy The Adventurer (U).nes', + 'Donkey Kong 3 (JUE).nes', + 'Donkey Kong Classics (U) [!].nes', + 'Donkey Kong Jr. (JU).nes', + 'Donkey Kong Jr. Math (U).nes', + 'Double Dare (U).nes', + 'Double Dragon (U).nes', + 'Double Dragon II - The Revenge (U).nes', + 'Double Dragon III - The Sacred Stones (U).nes', + 'Double Dribble (U) (PRG1) [!].nes', + 'Double Strike (U) (V1.1).nes', + 'Dr. Chaos (U).nes', + 'Dr. Jekyll and Mr. Hyde (U).nes', + 'Dragon Fighter (U).nes', + 'Dragon Power (U).nes', + 'Dragon Spirit - The New Legend (U).nes', + 'Dragon Warrior (U) (PRG1).nes', + 'Dragon Warrior II (U).nes', + 'Dragon Warrior III (U).nes', + 'Dragon Warrior IV (U).nes', + 'Dragon\'s Lair (U).nes', + 'Duck Tales (U).nes', + 'Duck Tales 2 (U).nes', + 'Dudes With Attitude (U).nes', + 'Dungeon Magic - Sword of the Elements (U).nes', + 'Dusty Diamond\'s All-Star Softball (U).nes', + 'Dynowarz - Destruction of Spondylus (U).nes', + 'Elevator Action (U).nes', + 'Eliminator Boat Duel (U).nes', + 'Excitebike (JU) [!].nes', + 'Exodus (U) (V4.0) [!].nes', + 'F-117A Stealth Fighter (U) [!].nes', + 'F-15 City War (U).nes', + 'F-15 Strike Eagle (U).nes', + 'Family Feud (U).nes', + 'Fantastic Adventures of Dizzy, The (U).nes', + 'Fantasy Zone (U).nes', + 'Faria - A World of Mystery and Danger! (U).nes', + 'Faxanadu (U).nes', + 'Felix the Cat (U).nes', + 'Ferrari - Grand Prix Challenge (U) [!].nes', + 'Fester\'s Quest (U) [!].nes', + 'Final Fantasy (U) [!].nes', + 'Fire \'n Ice (U).nes', + 'Fire Hawk (Unl).nes', + 'Firehouse Rescue (U).nes', + 'Fist of the North Star (U).nes', + 'Flight of the Intruder (U).nes', + 'Flintstones, The - The Rescue of Dino & Hoppy (U).nes', + 'Flintstones, The - The Surprise at Dinosaur Peak! (U).nes', + 'Flying Dragon - The Secret Scroll (U).nes', + 'Flying Warriors (U).nes', + 'Formula One - Built To Win (U) [o1].nes', + 'Frankenstein - The Monster Returns (U).nes', + 'Freedom Force (U) [!].nes', + 'Friday the 13th (U).nes', + 'Fun House (U).nes', + 'G.I. Joe (U).nes', + 'G.I. Joe - The Atlantis Factor (U).nes', + 'Galaga (U).nes', + 'Galaxy 5000 (U).nes', + 'Gargoyle\'s Quest II - The Demon Darkness (U).nes', + 'Gauntlet (U) [!].nes', + 'Gauntlet II (U).nes', + 'Gemfire (U).nes', + 'Genghis Khan (U).nes', + 'George Foreman\'s KO Boxing (U).nes', + 'Ghostbusters (U).nes', + 'Ghostbusters 2 (U).nes', + 'Ghosts\'n Goblins (U) [!].nes', + 'Ghoul School (U).nes', + 'Gilligan\'s Island (U).nes', + 'Goal! (U).nes', + 'Goal! Two (U).nes', + 'Godzilla - Monster of Monsters! (U).nes', + 'Godzilla 2 - War of the Monsters (U).nes', + 'Gold Medal Challenge \'92 (U).nes', + 'Golf Grand Slam (U).nes', + 'Golgo 13 - Top Secret Episode (U).nes', + 'Goonies II, The (U).nes', + 'Gotcha! - The Sport! (U).nes', + 'Gradius (U).nes', + 'Great Waldo Search, The (U).nes', + 'Greg Norman\'s Golf Power (U).nes', + 'Gremlins 2 - The New Batch (U).nes', + 'Guardian Legend, The (U).nes', + 'Guerrilla War (U).nes', + 'Gumshoe (UE).nes', + 'Gun Nac (U).nes', + 'Gun.Smoke (U).nes', + 'Gyromite (JUE).nes', + 'Gyruss (U).nes', + 'Harlem Globetrotters (U).nes', + 'Hatris (U).nes', + 'Heavy Barrel (U).nes', + 'Heavy Shreddin\' (U).nes', + 'High Speed (U).nes', + 'Hogan\'s Alley (JU) [!].nes', + 'Hollywood Squares (U).nes', + 'Home Alone (U) [!].nes', + 'Home Alone 2 - Lost in New York (U).nes', + 'Hook (U).nes', + 'Hoops (U).nes', + 'Hot Slot (UE).nes', + 'Hudson Hawk (U).nes', + 'Hudson\'s Adventure Island (U).nes', + 'Hudson\'s Adventure Island II (U).nes', + 'Hudson\'s Adventure Island III (U).nes', + 'Hunt for Red October, The (U).nes', + 'Hydlide (U).nes', + 'I Can Remember (U).nes', + 'Ice Climber (U) [!].nes', + 'Ice Hockey (U) [!].nes', + 'Ikari III - The Rescue (U).nes', + 'Ikari Warriors (U) (PRG1) [!].nes', + 'Ikari Warriors II - Victory Road (U).nes', + 'Image Fight (U).nes', + 'Immortal, The (U).nes', + 'Impossible Mission II (U).nes', + 'Incredible Crash Dummies, The (U).nes', + 'Indiana Jones and the Last Crusade (U) (Taito).nes', + 'Indiana Jones and the Temple of Doom (U) (Tengen).nes', + 'Infiltrator (U).nes', + 'Iron Tank (U).nes', + 'Ironsword - Wizards & Warriors II (U).nes', + 'Isolated Warrior (U).nes', + 'Ivan Ironman Stewart\'s Super Off-Road (U).nes', + 'Jack Nicklaus\' Greatest 18 Holes of Major Championship Golf (U).nes', + 'Jackal (U).nes', + 'Jackie Chan\'s Action Kung Fu (U).nes', + 'James Bond Jr (U).nes', + 'Jaws (U) [!].nes', + 'Jeopardy! (U).nes', + 'Jeopardy! 25th Anniversary Edition (U).nes', + 'Jeopardy! Junior Edition (U).nes', + 'Jetsons, The - Cogswell\'s Caper! (U).nes', + 'Jimmy Connor\'s Tennis (U).nes', + 'Joe & Mac (U).nes', + 'John Elway\'s Quarterback (U).nes', + 'Joshua (U) (V6.0) [!].nes', + 'Journey to Silius (U).nes', + 'Joust (U).nes', + 'Jungle Book, The (U).nes', + 'Jurassic Park (U).nes', + 'Kabuki - Quantum Fighter (U).nes', + 'Karate Champ (U).nes', + 'Karate Kid, The (U).nes', + 'Karnov (U).nes', + 'Kick Master (U).nes', + 'Kickle Cubicle (U).nes', + 'Kid Icarus (UE).nes', + 'Kid Klown (U).nes', + 'Kid Kool (U).nes', + 'Kid Niki - Radical Ninja (U) (PRG1) [!].nes', + 'King Neptune\'s Adventure (U).nes', + 'King of Kings, The (U) (V1.2) [!].nes', + 'King\'s Knight (U).nes', + 'King\'s Quest V (U).nes', + 'Kings of the Beach (U).nes', + 'Kirby\'s Adventure (U) (PRG1) [!].nes', + 'Kiwi Kraze (U).nes', + 'Klash Ball (U).nes', + 'Klax (U).nes', + 'Knight Rider (U).nes', + 'Krazy Kreatures (U).nes', + 'Krion Conquest, The (U).nes', + 'Krusty\'s Fun House (U).nes', + 'Kung Fu (U) [!].nes', + 'Kung-Fu Heroes (U).nes', + 'L\'Empereur (U).nes', + 'Laser Invasion (U).nes', + 'Last Action Hero (U) [!].nes', + 'Last Ninja, The (U).nes', + 'Last Starfighter, The (U).nes', + 'Lee Trevino\'s Fighting Golf (U).nes', + 'Legacy of the Wizard (U).nes', + 'Legend of Kage, The (U).nes', + 'Legend of the Ghost Lion (U).nes', + 'Legendary Wings (U).nes', + 'Legends of the Diamond (U).nes', + 'Lethal Weapon (U).nes', + 'Lifeforce (U).nes', + 'Linus Spacehead\'s Cosmic Crusade (Aladdin) (U).nes', + 'Little League Baseball - Championship Series (U).nes', + 'Little Mermaid, The (U).nes', + 'Little Nemo - The Dream Master (U).nes', + 'Little Ninja Brothers (U).nes', + 'Little Samson (U).nes', + 'Lode Runner (U).nes', + 'Lone Ranger, The (U).nes', + 'Loopz (U).nes', + 'Low G Man (U) [!].nes', + 'Lunar Pool (U).nes', + 'M.C. Kids (U).nes', + 'M.U.L.E. (U).nes', + 'M.U.S.C.L.E. (U).nes', + 'Mach Rider (JU).nes', + 'Mad Max (U) [!].nes', + 'Mafat Conspiracy - Golgo 13 (U).nes', + 'Magic Darts (U).nes', + 'Magic Johnson\'s Fast Break (U).nes', + 'Magic of Scheherazade, The (U).nes', + 'Magician (U).nes', + 'Magmax (U).nes', + 'Major League Baseball (U).nes', + 'Maniac Mansion (U).nes', + 'Mappy-Land (U).nes', + 'Marble Madness (U).nes', + 'Mario is Missing! (U).nes', + 'Mario\'s Time Machine! (U).nes', + 'Marvel\'s X-Men (U).nes', + 'Master Chu & The Drunkard Hu (U).nes', + 'Mechanized Attack (U).nes', + 'Mega Man (U).nes', + 'Mega Man 2 (U).nes', + 'Mega Man 3 (U) [!].nes', + 'Mega Man 4 (U).nes', + 'Mega Man 5 (U).nes', + 'Mega Man 6 (U).nes', + 'Menace Beach (U).nes', + 'Mendel Palace (U).nes', + 'Mermaids of Atlantis (U).nes', + 'Metal Fighter (U).nes', + 'Metal Gear (U).nes', + 'Metal Mech (U).nes', + 'Metal Storm (U).nes', + 'metalgear2.nes', + 'Metroid (U) [!].nes', + 'Michael Andretti\'s World Grand Prix (U).nes', + 'Mickey Mousecapade (U).nes', + 'Mickey\'s Adventures in Numberland (U).nes', + 'Mickey\'s Safari in Letterland (U).nes', + 'Micro Machines (U).nes', + 'MiG 29 - Soviet Fighter (U).nes', + 'Might and Magic (U).nes', + 'Mighty Bomb Jack (U).nes', + 'Mighty Final Fight (U).nes', + 'Mike Tyson\'s Punch-Out!! (U) (PRG1).nes', + 'Millipede (U).nes', + 'Milon\'s Secret Castle (U).nes', + 'Miracle Piano Teaching System, The (U).nes', + 'Mission Cobra (U).nes', + 'Mission Impossible (U).nes', + 'Monopoly (U).nes', + 'Monster In My Pocket (U).nes', + 'Monster Party (U).nes', + 'Monster Truck Rally (U).nes', + 'Moon Ranger (U).nes', + 'Motor City Patrol (U).nes', + 'Ms. Pac-Man (U) (Tengen).nes', + 'Muppet Adventure - Chaos at the Carnival (U).nes', + 'Mutant Virus, The (U).nes', + 'Mystery Quest (U).nes', + 'NARC (U).nes', + 'NES Open Tournament Golf (U).nes', + 'NES Play Action Football (U).nes', + 'NFL Football (U).nes', + 'Nigel Mansell\'s World Championship Challenge (U).nes', + 'Nightmare on Elm Street, A (U).nes', + 'Nightshade (U).nes', + 'Ninja Crusaders (U).nes', + 'Ninja Gaiden (U) [!].nes', + 'Ninja Gaiden 2 - The Dark Sword of Chaos (U).nes', + 'Ninja Gaiden 3 - The Ancient Ship of Doom (U) [!].nes', + 'Ninja Kid (U).nes', + 'Nintendo World Cup (U).nes', + 'Nobunaga\'s Ambition (U).nes', + 'Nobunaga\'s Ambition 2 (U).nes', + 'North & South (U).nes', + 'official.nes', + 'Operation Secret Storm (U).nes', + 'Operation Wolf (U).nes', + 'Orb 3D (U).nes', + 'Othello (U).nes', + 'Overlord (U).nes', + 'P\'radikus Conflict, The (U).nes', + 'Pac-Mania (U).nes', + 'Palamedes (U).nes', + 'Panic Restaurant (U).nes', + 'Paperboy (U).nes', + 'Paperboy 2 (U).nes', + 'Peek-A-Boo Poker (UE) [!].nes', + 'Perfect Fit (U).nes', + 'Pesterminator - The Western Exterminator (U).nes', + 'Peter Pan & The Pirates (U).nes', + 'Phantom Fighter (U).nes', + 'Pictionary (U).nes', + 'Pinball (JU).nes', + 'Pinball Quest (U).nes', + 'Pinbot (U) [!].nes', + 'Pipe Dream (U).nes', + 'Pirates! (U).nes', + 'Platoon (U) (PRG1) [!].nes', + 'Popeye (JU) (PRG1) [!].nes', + 'POW - Prisoners of War (U).nes', + 'Power Blade (U) [!].nes', + 'Power Blade 2 (U).nes', + 'Power Pad Dance Aerobics (U).nes', + 'Power Punch 2 (U).nes', + 'Predator (U).nes', + 'Prince of Persia (U).nes', + 'Princess Tomato in Salad Kingdom (U).nes', + 'Pro Sport Hockey (U).nes', + 'Pro Wrestling (U) (PRG1) [!].nes', + 'Punch-Out!! (U).nes', + 'Punisher, The (U).nes', + 'Puss \'n Boots - Pero\'s Great Adventure (U).nes', + 'Puzznic (U).nes', + 'Q-bert (U).nes', + 'Qix (U).nes', + 'Quattro Adventure (U).nes', + 'Quattro Arcade (U).nes', + 'Quattro Sports (U).nes', + 'R.B.I. Baseball (U).nes', + 'R.B.I. Baseball 2 (U).nes', + 'R.B.I. Baseball 3 (U).nes', + 'R.C. Pro-Am (U) (PRG1).nes', + 'R.C. Pro-Am 2 (U).nes', + 'Race America (U).nes', + 'Racket Attack (U).nes', + 'Rad Racer (U).nes', + 'Rad Racer 2 (U) [!].nes', + 'Rad Racket - Deluxe Tennis II (U) [!].nes', + 'Raid 2020 (U) [!].nes', + 'Raid on Bungeling Bay (U).nes', + 'Rainbow Islands - The Story of Bubble Bobble 2 (U).nes', + 'Rally Bike (U).nes', + 'Rambo (U).nes', + 'Rampage (U).nes', + 'Rampart (U).nes', + 'Remote Control (U).nes', + 'Ren & Stimpy Show, The (U).nes', + 'Renegade (U).nes', + 'Rescue - The Embassy Mission (U).nes', + 'Ring King (U).nes', + 'River City Ransom (U).nes', + 'Road Runner (U).nes', + 'RoadBlasters (U).nes', + 'Robin Hood - Prince of Thieves (U).nes', + 'Robo Warrior (U).nes', + 'Robocop (U).nes', + 'Robocop 2 (U).nes', + 'Robocop 3 (U).nes', + 'Robodemons (U).nes', + 'Rock \'n\' Ball (U).nes', + 'Rocket Ranger (U) [!].nes', + 'Rocketeer, The (U).nes', + 'Rockin\' Kats (U) [!].nes', + 'Roger Clemens MVP Baseball (U).nes', + 'Rollerball (U).nes', + 'Rollerblade Racer (U).nes', + 'Rollergames (U) [!].nes', + 'Rolling Thunder (U).nes', + 'Romance of the Three Kingdoms (U).nes', + 'Romance of the Three Kingdoms II (U) [!].nes', + 'Roundball - 2-on-2 Challenge (U).nes', + 'Rush\'n Attack (U).nes', + 'Rygar (U).nes', + 'SCAT - Special Cybernetic Attack Team (U).nes', + 'Secret Scout (Unl).nes', + 'Section Z (U).nes', + 'Seicross (U).nes', + 'Sesame Street 123 (U).nes', + 'Sesame Street ABC (U).nes', + 'Sesame Street ABC - 123 (U).nes', + 'Sesame Street Countdown (U).nes', + 'Shadow of the Ninja (U).nes', + 'Shadowgate (U).nes', + 'Shatterhand (U).nes', + 'Shingen The Ruler (U).nes', + 'Shinobi (U).nes', + 'Shockwave (U).nes', + 'Shooting Range (U).nes', + 'Short Order - Eggsplode (U) [!].nes', + 'Side Pocket (U).nes', + 'Silent Assault (U).nes', + 'Silent Service (U).nes', + 'Silk Worm (U).nes', + 'Silver Surfer (U).nes', + 'Simpsons, The - Bart Vs. the Space Mutants (U).nes', + 'Simpsons, The - Bart Vs. the World (U).nes', + 'Simpsons, The - Bartman Meets Radioactive Man (U).nes', + 'Skate or Die 2 - The Search for Double Trouble (U).nes', + 'Skate or Die! (U).nes', + 'Ski or Die (U).nes', + 'Skull & Crossbones (U).nes', + 'Sky Kid (U).nes', + 'Sky Shark (U).nes', + 'Slalom (U).nes', + 'Smash T.V. (U) [!].nes', + 'Snake Rattle\'n Roll (U).nes', + 'Snake\'s Revenge (U).nes', + 'Snoopy\'s Silly Sports Spectacular (U).nes', + 'Snow Bros (U).nes', + 'Soccer (JU).nes', + 'Solar Jetman - Hunt for the Golden Warpship (U).nes', + 'Solitaire (U).nes', + 'Solomon\'s Key (U) [!].nes', + 'Solstice (U).nes', + 'Space Shuttle Project (U).nes', + 'Spelunker (U) [!].nes', + 'Spider-Man - Return of the Sinister Six (U) [!].nes', + 'Spiritual Warfare (U) (V6.1).nes', + 'Spot (U).nes', + 'Spy Hunter (U).nes', + 'Spy Vs Spy (U).nes', + 'Sqoon (U).nes', + 'Stack Up (Robot Block) (JU).nes', + 'Stadium Events (U) [!].nes', + 'Stanley - The Search for Dr. Livingston (U).nes', + 'Star Force (U).nes', + 'Star Soldier (U).nes', + 'Star Trek - 25th Anniversary (U).nes', + 'Star Trek - The Next Generation (U).nes', + 'Star Voyager (U).nes', + 'Star Wars (U).nes', + 'Star Wars - The Empire Strikes Back (U).nes', + 'Starship Hector (U).nes', + 'Startropics (U).nes', + 'Startropics 2 - Zoda\'s Revenge (U).nes', + 'Stealth ATF (U).nes', + 'Stinger (U).nes', + 'Stinger.nes', + 'Street Cop (U).nes', + 'Street Fighter 2010 (U).nes', + 'Strider (U).nes', + 'Stunt Kids (U).nes', + 'Sunday Funday (U).nes', + 'Super C (U) [!].nes', + 'Super Cars (U).nes', + 'Super Dodge Ball (U).nes', + 'Super Glove Ball (U).nes', + 'Super Jeopardy! (U).nes', + 'Super Mario Bros. + Duck Hunt (U).nes', + 'Super Mario Bros. + Duck Hunt + World Class Track Meet (U).nes', + 'Super Mario Bros. 2 (U) (PRG0) [!].nes', + 'Super Pitfall (U).nes', + 'Super Spike V\'Ball (U).nes', + 'Super Spike V\'Ball + Nintendo World Cup (U) [!].nes', + 'Super Sprint (U).nes', + 'Super Spy Hunter (U).nes', + 'Super Team Games (U).nes', + 'Superman (U).nes', + 'Swamp Thing (U) [!].nes', + 'Sword Master (U).nes', + 'Swords and Serpents (U).nes', + 'T&C 2 - Thrilla\'s Surfari (U).nes', + 'T&C Surf Design (U).nes', + 'Taboo - The Sixth Sense (U).nes', + 'Tag Team Wrestling (U).nes', + 'Tagin\' Dragon (U).nes', + 'TaleSpin (U).nes', + 'Target Renegade (U).nes', + 'Tecmo Baseball (U).nes', + 'Tecmo Bowl (U) (PRG1).nes', + 'Tecmo Cup - Soccer Game (U).nes', + 'Tecmo NBA Basketball (U).nes', + 'Tecmo Super Bowl (U).nes', + 'Tecmo World Wrestling (U).nes', + 'Teenage Mutant Ninja Turtles (U) [!].nes', + 'Teenage Mutant Ninja Turtles - Tournament Fighters (U).nes', + 'Teenage Mutant Ninja Turtles II - The Arcade Game (U) [!].nes', + 'Teenage Mutant Ninja Turtles III - The Manhattan Project (U).nes', + 'Terminator 2 - Judgment Day (U).nes', + 'Terminator, The (U).nes', + 'Terra Cresta (U).nes', + 'Three Stooges (U).nes', + 'Thunder & Lightning (U).nes', + 'Thunderbirds (U).nes', + 'Thundercade (U).nes', + 'Tiger-Heli (U).nes', + 'Tiles of Fate (U).nes', + 'Time Lord (U).nes', + 'Times of Lore (U).nes', + 'Tiny Toon Adventures (U).nes', + 'Tiny Toon Adventures 2 - Trouble in Wackyland (U).nes', + 'Tiny Toon Adventures Cartoon Workshop (U).nes', + 'To The Earth (U).nes', + 'Toki (U).nes', + 'Tom & Jerry and Tuffy (U).nes', + 'Tombs and Treasure (U).nes', + 'Toobin\' (U).nes', + 'Top Gun (U) (PRG1).nes', + 'Top Gun - The Second Mission (U).nes', + 'Top Players\' Tennis - Featuring Chris Evert & Ivan Lendl (U).nes', + 'Total Recall (U).nes', + 'Totally Rad (U).nes', + 'Touch Down Fever (U).nes', + 'Toxic Crusaders (U).nes', + 'Track & Field (U).nes', + 'Track & Field 2 (U).nes', + 'Transformers.nes', + 'Treasure Master (U).nes', + 'Trog (U).nes', + 'Trojan (U).nes', + 'Trolls on Treasure Island (U).nes', + 'Twin Cobra (U).nes', + 'Twin Eagle (U).nes', + 'Ultima - Exodus (U).nes', + 'Ultima - Quest of the Avatar (U).nes', + 'Ultima - Warriors of Destiny (U).nes', + 'Ultimate Air Combat (U).nes', + 'Ultimate Basketball (U).nes', + 'Ultimate League Soccer (U).nes', + 'Ultimate Stuntman (U).nes', + 'Uncharted Waters (U).nes', + 'Uninvited (U).nes', + 'Untouchables, The (U).nes', + 'Urban Champion (JU).nes', + 'Vegas Dream (U).nes', + 'Venice Beach Volleyball (U).nes', + 'Vice - Project Doom (U).nes', + 'Videomation (U).nes', + 'Vindicators (U).nes', + 'Volleyball (U).nes', + 'Wacky Races (U).nes', + 'Wall Street Kid (U).nes', + 'Wally Bear and the No Gang (U).nes', + 'Wario\'s Woods (U) [!].nes', + 'Wayne Gretzky Hockey (U).nes', + 'Wayne\'s World (U).nes', + 'WCW World Championship Wrestling (U).nes', + 'Werewolf - The Last Warrior (U).nes', + 'Wheel of Fortune (U) (PRG1) [!].nes', + 'Wheel of Fortune - Starring Vanna White (U).nes', + 'Wheel of Fortune Family Edition (U).nes', + 'Wheel of Fortune Junior Edition (U).nes', + 'Where in Time is Carmen Sandiego (U).nes', + 'Where\'s Waldo (U).nes', + 'Who Framed Roger Rabbit (U).nes', + 'Whomp\'Em (U).nes', + 'Widget (U).nes', + 'Wild Gunman (U) (PRG1) [!].nes', + 'Willow (U).nes', + 'Win, Lose or Draw (U).nes', + 'Winter Games (U).nes', + 'Wizardry - Proving Grounds of the Mad Overlord (U).nes', + 'Wizardry - The Knight of Diamonds (U).nes', + 'Wizards & Warriors (U).nes', + 'Wizards & Warriors 3 (U).nes', + 'Wolverine (U).nes', + 'World Champ (U) [!].nes', + 'World Games (U).nes', + 'Wrath of the Black Manta (U).nes', + 'Wrecking Crew (JUE) [t1].nes', + 'Wurm (U).nes', + 'WWF King of the Ring (U).nes', + 'WWF Steel Cage Challenge (U).nes', + 'WWF Wrestlemania (U).nes', + 'WWF Wrestlemania Challenge (U).nes', + 'Xenophobe (U).nes', + 'Xevious (U).nes', + 'Xexyz (U).nes', + 'Yo! Noid (U).nes', + 'Yo!Noid.nes', + 'Yoshi (U).nes', + 'Yoshi\'s Cookie (U).nes', + 'Young Indiana Jones Chronicles, The (U).nes', + 'Zanac (U).nes', + 'Zen Intergalactic Ninja (U).nes', + 'Zombie Nation (U).nes' + )*/ +}
\ No newline at end of file diff --git a/js.2/utils.js b/js.2/utils.js new file mode 100644 index 0000000..859296c --- /dev/null +++ b/js.2/utils.js @@ -0,0 +1,18 @@ + +NES.Utils = { + arraycopy: function(src, srcPos, dest, destPos, length) { + for (var i=0; i<length; ++i) { + dest[destPos+i] = src[srcPos+i]; + } + }, + + // http://www.sitepoint.com/blogs/2006/01/17/javascript-inheritance/ + copyPrototype: function(descendant, parent) { + var sConstructor = parent.toString(); + var aMatch = sConstructor.match( /\s*function (.*)\(/ ); + if ( aMatch != null ) { descendant.prototype[aMatch[1]] = parent; } + for (var m in parent.prototype) { + descendant.prototype[m] = parent.prototype[m]; + } + } +} |