forked from gasman/jsspeccy2
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z80.js
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z80.js
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(function() {
window.JSSpeccy.Z80 = function(opts) {
var ADC_A, ADD_A, ADD_RR_RR, AND_A, BIT_N_R, BIT_N_iHLi, BIT_N_iRRpNNi, CALL_C_NN, CALL_NN, CCF, CPDR, CPIR, CPL, CP_A, DEC, DEC_RR, DI, DJNZ_N, EI, EXX, EX_RR_RR, EX_iSPi_RR, FLAG_3, FLAG_5, FLAG_C, FLAG_H, FLAG_N, FLAG_P, FLAG_S, FLAG_V, FLAG_Z, HALT, IM, INC, INC_RR, IN_A_N, IN_R_iCi, JP_C_NN, JP_NN, JP_RR, JR_C_N, JR_N, LDDR, LDI, LDIR, LD_A_iNNi, LD_RR_NN, LD_RR_RR, LD_RR_iNNi, LD_R_N, LD_R_R, LD_R_iRRi, LD_R_iRRpNNi, LD_iNNi_A, LD_iNNi_RR, LD_iRRi_N, LD_iRRi_R, LD_iRRpNNi_N, LD_iRRpNNi_R, NEG, NOP, OPCODE_RUNNERS, OPCODE_RUNNERS_CB, OPCODE_RUNNERS_DD, OPCODE_RUNNERS_DDCB, OPCODE_RUNNERS_ED, OPCODE_RUNNERS_FD, OPCODE_RUNNERS_FDCB, OPCODE_RUN_STRINGS, OPCODE_RUN_STRINGS_CB, OPCODE_RUN_STRINGS_DD, OPCODE_RUN_STRINGS_DDCB, OPCODE_RUN_STRINGS_ED, OPCODE_RUN_STRINGS_FD, OPCODE_RUN_STRINGS_FDCB, OR_A, OUT_iCi_R, OUT_iNi_A, POP_RR, PUSH_RR, RES, RET, RET_C, RL, RLA, RLC, RLCA, RR, RRA, RRC, RRCA, RST, SBC_A, SBC_HL_RR, SCF, SET, SHIFT, SLA, SRA, SRL, SUB_A, XOR_A, buildRunnerFunctions, display, generateddfdOpcodeSet, generateddfdcbOpcodeSet, getParamBoilerplate, halfcarryAddTable, halfcarrySubTable, halted, iff1, iff2, im, interruptPending, interruptible, ioBus, memory, opcodePrefix, opcodeSwitch, overflowAddTable, overflowSubTable, parityTable, rA, rA_, rB, rB_, rC, rC_, rD, rD_, rE, rE_, rF, rF_, rH, rH_, rI, rIXH, rIXL, rIYH, rIYL, rL, rL_, rR, regPairs, registerBuffer, regs, rpAF, rpAF_, rpBC, rpBC_, rpDE, rpDE_, rpHL, rpHL_, rpIR, rpIX, rpIY, rpPC, rpSP, self, sz53Table, sz53pTable, tstates, z80InitTables, z80Interrupt;
self = {};
memory = opts.memory;
ioBus = opts.ioBus;
display = opts.display;
rpAF = 0;
rpBC = 1;
rpDE = 2;
rpHL = 3;
rpAF_ = 4;
rpBC_ = 5;
rpDE_ = 6;
rpHL_ = 7;
rpIX = 8;
rpIY = 9;
rpIR = 10;
rpSP = 11;
rpPC = 12;
registerBuffer = new ArrayBuffer(26);
regPairs = new Uint16Array(registerBuffer);
regs = new Uint8Array(registerBuffer);
/*
Typed arrays are native-endian
(http://lists.w3.org/Archives/Public/public-script-coord/2010AprJun/0048.html,
http://cat-in-136.blogspot.com/2011/03/javascript-typed-array-use-native.html)
so need to test endianness in order to know the offsets of individual registers
*/
regPairs[rpAF] = 0x0100;
if (regs[0] === 0x01) {
rA = 0;
rF = 1;
rB = 2;
rC = 3;
rD = 4;
rE = 5;
rH = 6;
rL = 7;
rA_ = 8;
rF_ = 9;
rB_ = 10;
rC_ = 11;
rD_ = 12;
rE_ = 13;
rH_ = 14;
rL_ = 15;
rIXH = 16;
rIXL = 17;
rIYH = 18;
rIYL = 19;
rI = 20;
rR = 21;
} else {
rF = 0;
rA = 1;
rC = 2;
rB = 3;
rE = 4;
rD = 5;
rL = 6;
rH = 7;
rF_ = 8;
rA_ = 9;
rC_ = 10;
rB_ = 11;
rE_ = 12;
rD_ = 13;
rL_ = 14;
rH_ = 15;
rIXL = 16;
rIXH = 17;
rIYL = 18;
rIYH = 19;
rR = 20;
rI = 21;
}
tstates = 0;
iff1 = iff2 = im = 0;
halted = false;
FLAG_C = 0x01;
FLAG_N = 0x02;
FLAG_P = 0x04;
FLAG_V = 0x04;
FLAG_3 = 0x08;
FLAG_H = 0x10;
FLAG_5 = 0x10;
FLAG_Z = 0x40;
FLAG_S = 0x80;
/*
Whether a half carry occurred or not can be determined by looking at
the 3rd bit of the two arguments and the result; these are hashed
into this table in the form r12, where r is the 3rd bit of the
result, 1 is the 3rd bit of the 1st argument and 2 is the
third bit of the 2nd argument; the tables differ for add and subtract
operations
*/
halfcarryAddTable = new Uint8Array([0, FLAG_H, FLAG_H, FLAG_H, 0, 0, 0, FLAG_H]);
halfcarrySubTable = new Uint8Array([0, 0, FLAG_H, 0, FLAG_H, 0, FLAG_H, FLAG_H]);
overflowAddTable = new Uint8Array([0, 0, 0, FLAG_V, FLAG_V, 0, 0, 0]);
overflowSubTable = new Uint8Array([0, FLAG_V, 0, 0, 0, 0, FLAG_V, 0]);
sz53Table = new Uint8Array(0x100);
parityTable = new Uint8Array(0x100);
sz53pTable = new Uint8Array(0x100);
z80InitTables = function() {
var i, j, k, parity;
for (i = 0; 0 <= 0x100 ? i < 0x100 : i > 0x100; 0 <= 0x100 ? i++ : i--) {
sz53Table[i] = i & (FLAG_3 | FLAG_5 | FLAG_S);
j = i;
parity = 0;
for (k = 0; k < 8; k++) {
parity ^= j & 1;
j >>= 1;
}
parityTable[i] = parity ? 0 : FLAG_P;
sz53pTable[i] = sz53Table[i] | parityTable[i];
}
sz53Table[0] |= FLAG_Z;
return sz53pTable[0] |= FLAG_Z;
};
z80InitTables();
/*
Boilerplate generator: a helper to deal with classes of opcodes which perform
the same task on different types of operands: e.g. XOR B, XOR (HL), XOR nn, XOR (IX+nn).
This function accepts the parameter in question, and returns a set of canned strings
for use in the opcode runner body:
'getter': a block of code that performs any necessary memory access etc in order to
make 'v' a valid expression;
'v': an expression with no side effects, evaluating to the operand's value. (Must also be a valid lvalue for assignment)
'trunc': an expression such as '& 0xff' to truncate v back to its proper range, if appropriate
'setter': a block of code that writes an updated value back to its proper location, if any
Passing hasIXOffsetAlready = true indicates that we have already read the offset value of (IX+nn)/(IY+nn)
into a variable 'offset' (necessary because DDCB/FFCB instructions put this before the final opcode byte).
*/
getParamBoilerplate = function(param, hasIXOffsetAlready) {
var getter, match, rp;
if (hasIXOffsetAlready == null) hasIXOffsetAlready = false;
if (param.match(/^[AFBCDEHL]|I[XY][HL]$/)) {
return {
'getter': '',
'v': "regs[r" + param + "]",
'trunc': '',
'setter': ''
};
} else if (param === '(HL)') {
return {
'getter': "var val = memory.read(regPairs[" + rpHL + "]); tstates += 3;",
'v': 'val',
'trunc': '& 0xff',
'setter': "memory.write(regPairs[" + rpHL + "], val); tstates += 4;"
};
} else if (param === 'nn') {
return {
'getter': "var val = memory.read(regPairs[" + rpPC + "]++); tstates += 3;",
'v': 'val',
'trunc': '& 0xff',
'setter': ''
};
} else if ((match = param.match(/^\((I[XY])\+nn\)$/))) {
rp = "rp" + match[1];
if (hasIXOffsetAlready) {
getter = '';
} else {
getter = "var offset = memory.read(regPairs[" + rpPC + "]++);\nif (offset & 0x80) offset -= 0x100;";
}
getter += "var addr = (regPairs[" + rp + "] + offset) & 0xffff;\nvar val = memory.read( addr );\ntstates += 11;";
return {
'getter': getter,
'v': 'val',
'trunc': '& 0xff',
'setter': "memory.write(addr, val); tstates += 4;"
};
} else {
throw "Unknown param format: " + param;
}
};
/*
Opcode generator functions: each returns a string of Javascript that performs the opcode
when executed within this module's scope. Note that instructions with DDCBnn opcodes also
require an 'offset' variable to be defined as nn (as a signed byte).
*/
ADC_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nvar adctemp = regs[rA] + " + operand.v + " + (regs[rF] & FLAG_C);\nvar lookup = ( (regs[rA] & 0x88) >> 3 ) | ( (" + operand.v + " & 0x88) >> 2 ) | ( (adctemp & 0x88) >> 1 );\nregs[rA] = adctemp;\nregs[rF] = ( adctemp & 0x100 ? FLAG_C : 0 ) | halfcarryAddTable[lookup & 0x07] | overflowAddTable[lookup >> 4] | sz53Table[regs[rA]];";
};
ADD_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nvar addtemp = regs[rA] + " + operand.v + ";\nvar lookup = ( (regs[rA] & 0x88) >> 3 ) | ( (" + operand.v + " & 0x88) >> 2 ) | ( (addtemp & 0x88) >> 1 );\nregs[rA] = addtemp;\nregs[rF] = ( addtemp & 0x100 ? FLAG_C : 0 ) | halfcarryAddTable[lookup & 0x07] | overflowAddTable[lookup >> 4] | sz53Table[regs[rA]];";
};
ADD_RR_RR = function(rp1, rp2) {
return "var add16temp = regPairs[" + rp1 + "] + regPairs[" + rp2 + "];\nvar lookup = ( (regPairs[" + rp1 + "] & 0x0800) >> 11 ) | ( (regPairs[" + rp2 + "] & 0x0800) >> 10 ) | ( (add16temp & 0x0800) >> 9 );\nregPairs[" + rp1 + "] = add16temp;\nregs[rF] = ( regs[rF] & ( FLAG_V | FLAG_Z | FLAG_S ) ) | ( add16temp & 0x10000 ? FLAG_C : 0 ) | ( ( add16temp >> 8 ) & ( FLAG_3 | FLAG_5 ) ) | halfcarryAddTable[lookup];\ntstates += 7;";
};
AND_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nregs[rA] &= " + operand.v + ";\nregs[rF] = FLAG_H | sz53pTable[regs[rA]];";
};
BIT_N_iRRpNNi = function(bit, rp) {
return "var addr = (regPairs[" + rp + "] + offset) & 0xffff;\nvar value = memory.read(addr);\nregs[rF] = ( regs[rF] & FLAG_C ) | FLAG_H | ( ( addr >> 8 ) & ( FLAG_3 | FLAG_5 ) );\nif( ! ( (value) & ( 0x01 << (" + bit + ") ) ) ) regs[rF] |= FLAG_P | FLAG_Z;\nif( (" + bit + ") == 7 && (value) & 0x80 ) regs[rF] |= FLAG_S;\ntstates += 12;";
};
BIT_N_iHLi = function(bit) {
return "var addr = regPairs[rpHL];\nvar value = memory.read(addr);\nregs[rF] = ( regs[rF] & FLAG_C ) | FLAG_H | ( value & ( FLAG_3 | FLAG_5 ) );\nif( ! ( (value) & ( 0x01 << (" + bit + ") ) ) ) regs[rF] |= FLAG_P | FLAG_Z;\nif( (" + bit + ") == 7 && (value) & 0x80 ) regs[rF] |= FLAG_S;\ntstates += 4;";
};
BIT_N_R = function(bit, r) {
return "regs[rF] = ( regs[rF] & FLAG_C ) | FLAG_H | ( regs[" + r + "] & ( FLAG_3 | FLAG_5 ) );\nif( ! ( regs[" + r + "] & ( 0x01 << (" + bit + ") ) ) ) regs[rF] |= FLAG_P | FLAG_Z;\nif( (" + bit + ") == 7 && regs[" + r + "] & 0x80 ) regs[rF] |= FLAG_S;";
};
CALL_C_NN = function(flag, sense) {
if (sense) {
return "if (regs[rF] & " + flag + ") {\n var l = memory.read(regPairs[rpPC]++);\n var h = memory.read(regPairs[rpPC]++);\n memory.write(--regPairs[rpSP], regPairs[rpPC] >> 8);\n memory.write(--regPairs[rpSP], regPairs[rpPC] & 0xff);\n regPairs[rpPC] = (h<<8) | l;\n tstates += 13;\n} else {\n regPairs[rpPC] += 2; /* skip past address bytes */\n tstates += 6;\n}";
} else {
return "if (regs[rF] & " + flag + ") {\n regPairs[rpPC] += 2; /* skip past address bytes */\n tstates += 6;\n} else {\n var l = memory.read(regPairs[rpPC]++);\n var h = memory.read(regPairs[rpPC]++);\n memory.write(--regPairs[rpSP], regPairs[rpPC] >> 8);\n memory.write(--regPairs[rpSP], regPairs[rpPC] & 0xff);\n regPairs[rpPC] = (h<<8) | l;\n tstates += 13;\n}";
}
};
CALL_NN = function() {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nmemory.write(--regPairs[rpSP], regPairs[rpPC] >> 8);\nmemory.write(--regPairs[rpSP], regPairs[rpPC] & 0xff);\nregPairs[rpPC] = (h<<8) | l;\ntstates += 13;";
};
CCF = function() {
return "regs[rF] = ( regs[rF] & (FLAG_P | FLAG_Z | FLAG_S) ) | ( (regs[rF] & FLAG_C) ? FLAG_H : FLAG_C ) | ( regs[rA] & (FLAG_3 | FLAG_5) );";
};
CP_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nvar cptemp = regs[rA] - " + operand.v + ";\nvar lookup = ( (regs[rA] & 0x88) >> 3 ) | ( (" + operand.v + " & 0x88) >> 2 ) | ( (cptemp & 0x88) >> 1 );\nregs[rF] = ( cptemp & 0x100 ? FLAG_C : ( cptemp ? 0 : FLAG_Z ) ) | FLAG_N | halfcarrySubTable[lookup & 0x07] | overflowSubTable[lookup >> 4] | ( " + operand.v + " & ( FLAG_3 | FLAG_5 ) ) | ( cptemp & FLAG_S );";
};
CPDR = function() {
return "var value = memory.read(regPairs[rpHL]);\nvar bytetemp = (regs[rA] - value) & 0xff;\nvar lookup = ( (regs[rA] & 0x08) >> 3 ) | ( (value & 0x08) >> 2 ) | ( (bytetemp & 0x08) >> 1 );\nregPairs[rpBC]--;\nregs[rF] = (regs[rF] & FLAG_C) | ( regPairs[rpBC] ? (FLAG_V | FLAG_N) : FLAG_N ) | halfcarrySubTable[lookup] | (bytetemp ? 0 : FLAG_Z) | (bytetemp & FLAG_S);\nif (regs[rF] & FLAG_H) bytetemp--;\nregs[rF] |= (bytetemp & FLAG_3) | ( (bytetemp & 0x02) ? FLAG_5 : 0 );\nif( ( regs[rF] & (FLAG_V | FLAG_Z) ) == FLAG_V ) {\n regPairs[rpPC] -= 2;\n tstates += 5;\n}\nregPairs[rpHL]--;\ntstates += 8;";
};
CPIR = function() {
return "var value = memory.read(regPairs[rpHL]);\nvar bytetemp = (regs[rA] - value) & 0xff;\nvar lookup = ( (regs[rA] & 0x08) >> 3 ) | ( (value & 0x08) >> 2 ) | ( (bytetemp & 0x08) >> 1 );\nregPairs[rpBC]--;\nregs[rF] = (regs[rF] & FLAG_C) | ( regPairs[rpBC] ? (FLAG_V | FLAG_N) : FLAG_N ) | halfcarrySubTable[lookup] | (bytetemp ? 0 : FLAG_Z) | (bytetemp & FLAG_S);\nif (regs[rF] & FLAG_H) bytetemp--;\nregs[rF] |= (bytetemp & FLAG_3) | ( (bytetemp & 0x02) ? FLAG_5 : 0 );\nif( ( regs[rF] & (FLAG_V | FLAG_Z) ) == FLAG_V ) {\n regPairs[rpPC] -= 2;\n tstates += 5;\n}\nregPairs[rpHL]++;\ntstates += 8;";
};
CPL = function() {
return "regs[rA] ^= 0xff;\nregs[rF] = ( regs[rF] & (FLAG_C | FLAG_P | FLAG_Z | FLAG_S) ) | ( regs[rA] & (FLAG_3 | FLAG_5) ) | (FLAG_N | FLAG_H);";
};
DEC = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nregs[rF] = (regs[rF] & FLAG_C ) | ( " + operand.v + " & 0x0f ? 0 : FLAG_H ) | FLAG_N;\n" + operand.v + " = (" + operand.v + " - 1) " + operand.trunc + ";\n\n" + operand.setter + "\nregs[rF] |= (" + operand.v + " == 0x7f ? FLAG_V : 0) | sz53Table[" + operand.v + "];";
};
DEC_RR = function(rp) {
return "regPairs[" + rp + "]--;\ntstates += 2;";
};
DI = function() {
return "iff1 = iff2 = 0;";
};
DJNZ_N = function() {
return "regs[rB]--;\nif (regs[rB]) {\n /* take branch */\n var offset = memory.read(regPairs[rpPC]++);\n regPairs[rpPC] += (offset & 0x80 ? offset - 0x100 : offset);\n tstates += 9;\n} else {\n /* do not take branch */\n regPairs[rpPC]++; /* skip past offset byte */\n tstates += 4;\n}";
};
EI = function() {
return "iff1 = iff2 = 1;\ninterruptible = false;";
};
EX_iSPi_RR = function(rp) {
return "var l = memory.read(regPairs[rpSP]);\nvar h = memory.read((regPairs[rpSP] + 1) & 0xffff);\nmemory.write(regPairs[rpSP], regPairs[" + rp + "] & 0xff);\nmemory.write((regPairs[rpSP] + 1) & 0xffff, regPairs[" + rp + "] >> 8);\nregPairs[" + rp + "] = (h<<8) | l;\ntstates += 15;";
};
EX_RR_RR = function(rp1, rp2) {
return "var temp = regPairs[" + rp1 + "];\nregPairs[" + rp1 + "] = regPairs[" + rp2 + "];\nregPairs[" + rp2 + "] = temp;";
};
EXX = function() {
return "var wordtemp;\nwordtemp = regPairs[rpBC]; regPairs[rpBC] = regPairs[rpBC_]; regPairs[rpBC_] = wordtemp;\nwordtemp = regPairs[rpDE]; regPairs[rpDE] = regPairs[rpDE_]; regPairs[rpDE_] = wordtemp;\nwordtemp = regPairs[rpHL]; regPairs[rpHL] = regPairs[rpHL_]; regPairs[rpHL_] = wordtemp;";
};
HALT = function() {
return "halted = true;\nregPairs[rpPC]--;";
};
IM = function(val) {
return "im = " + val + ";";
};
IN_A_N = function() {
return "var val = memory.read(regPairs[rpPC]++);\nregs[rA] = ioBus.read( (regs[rA] << 8) | val );\ntstates += 7;";
};
IN_R_iCi = function(r) {
return "regs[" + r + "] = ioBus.read(regPairs[rpBC]);\nregs[rF] = (regs[rF] & FLAG_C) | sz53pTable[regs[" + r + "]];\ntstates += 4;";
};
INC = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nregs[rF] = (regs[rF] & FLAG_C ) | ( " + operand.v + " & 0x0f ? 0 : FLAG_H ) | FLAG_N;\n" + operand.v + " = (" + operand.v + " + 1) " + operand.trunc + ";\n\n" + operand.setter + "\nregs[rF] = (regs[rF] & FLAG_C) | ( " + operand.v + " == 0x80 ? FLAG_V : 0 ) | ( " + operand.v + " & 0x0f ? 0 : FLAG_H ) | sz53Table[" + operand.v + "];\ntstates += 7;";
};
INC_RR = function(rp) {
return "regPairs[" + rp + "]++;\ntstates += 2;";
};
JP_C_NN = function(flag, sense) {
if (sense) {
return "if (regs[rF] & " + flag + ") {\n var l = memory.read(regPairs[rpPC]++);\n var h = memory.read(regPairs[rpPC]++);\n regPairs[rpPC] = (h<<8) | l;\n} else {\n regPairs[rpPC] += 2; /* skip past address bytes */\n}\ntstates += 6;";
} else {
return "if (regs[rF] & " + flag + ") {\n regPairs[rpPC] += 2; /* skip past address bytes */\n} else {\n var l = memory.read(regPairs[rpPC]++);\n var h = memory.read(regPairs[rpPC]++);\n regPairs[rpPC] = (h<<8) | l;\n}\ntstates += 6;";
}
};
JP_RR = function(rp) {
return "regPairs[rpPC] = regPairs[" + rp + "];";
};
JP_NN = function() {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nregPairs[rpPC] = (h<<8) | l;\ntstates += 6;";
};
JR_C_N = function(flag, sense) {
if (sense) {
return "if (regs[rF] & " + flag + ") {\n var offset = memory.read(regPairs[rpPC]++);\n regPairs[rpPC] += (offset & 0x80 ? offset - 0x100 : offset);\n tstates += 8;\n} else {\n regPairs[rpPC]++; /* skip past offset byte */\n tstates += 3;\n}";
} else {
return "if (regs[rF] & " + flag + ") {\n regPairs[rpPC]++; /* skip past offset byte */\n tstates += 3;\n} else {\n var offset = memory.read(regPairs[rpPC]++);\n regPairs[rpPC] += (offset & 0x80 ? offset - 0x100 : offset);\n tstates += 8;\n}";
}
};
JR_N = function() {
return "var offset = memory.read(regPairs[rpPC]++);\nregPairs[rpPC] += (offset & 0x80 ? offset - 0x100 : offset);\ntstates += 8;";
};
LD_A_iNNi = function() {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nvar addr = (h<<8) | l;\nregs[rA] = memory.read(addr);\ntstates += 9;";
};
LD_iNNi_A = function() {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nvar addr = (h<<8) | l;\nmemory.write(addr, regs[rA]);\ntstates += 9;";
};
LD_iNNi_RR = function(rp) {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nvar addr = (h<<8) | l;\nmemory.write(addr, regPairs[" + rp + "] & 0xff);\nmemory.write((addr + 1) & 0xffff, regPairs[" + rp + "] >> 8);\ntstates += 12;";
};
LD_iRRi_N = function(rp) {
return "var n = memory.read(regPairs[rpPC]++);\nmemory.write(regPairs[" + rp + "], n);\ntstates += 6;";
};
LD_iRRi_R = function(rp, r) {
return "memory.write(regPairs[" + rp + "], regs[" + r + "]);\ntstates += 3;";
};
LD_iRRpNNi_N = function(rp) {
return "var offset = memory.read(regPairs[rpPC]++);\nif (offset & 0x80) offset -= 0x100;\nvar addr = (regPairs[" + rp + "] + offset) & 0xffff;\n\nvar val = memory.read(regPairs[rpPC]++);\nmemory.write(addr, val);\ntstates += 11;";
};
LD_iRRpNNi_R = function(rp, r) {
return "var offset = memory.read(regPairs[rpPC]++);\nif (offset & 0x80) offset -= 0x100;\nvar addr = (regPairs[" + rp + "] + offset) & 0xffff;\n\nmemory.write(addr, regs[" + r + "]);\ntstates += 11;";
};
LD_R_iRRi = function(r, rp) {
return "regs[" + r + "] = memory.read(regPairs[" + rp + "]);\ntstates += 3;";
};
LD_R_iRRpNNi = function(r, rp) {
return "var offset = memory.read(regPairs[rpPC]++);\nif (offset & 0x80) offset -= 0x100;\nvar addr = (regPairs[" + rp + "] + offset) & 0xffff;\n\nregs[" + r + "] = memory.read(addr);\ntstates += 11;";
};
LD_R_N = function(r) {
return "regs[" + r + "] = memory.read(regPairs[rpPC]++);\ntstates += 3;";
};
LD_R_R = function(r1, r2) {
if (r1 === rI || r2 === rI || r1 === rR || r2 === rR) {
return "regs[" + r1 + "] = regs[" + r2 + "];\ntstates += 1;";
} else {
return "regs[" + r1 + "] = regs[" + r2 + "];";
}
};
LD_RR_iNNi = function(rp, shifted) {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nvar addr = (h<<8) | l;\nl = memory.read(addr);\nh = memory.read((addr + 1) & 0xffff);\nregPairs[" + rp + "] = (h<<8) | l;\ntstates += 12;";
};
LD_RR_NN = function(rp) {
return "var l = memory.read(regPairs[rpPC]++);\nvar h = memory.read(regPairs[rpPC]++);\nregPairs[" + rp + "] = (h<<8) | l;\ntstates += 6;";
};
LD_RR_RR = function(rp1, rp2) {
return "regPairs[" + rp1 + "] = regPairs[" + rp2 + "];\ntstates += 2;";
};
LDDR = function() {
return "var bytetemp = memory.read(regPairs[rpHL]);\nmemory.write(regPairs[rpDE],bytetemp);\nregPairs[rpBC]--;\nbytetemp = (bytetemp + regs[rA]) & 0xff;\nregs[rF] = ( regs[rF] & ( FLAG_C | FLAG_Z | FLAG_S ) ) | ( regPairs[rpBC] ? FLAG_V : 0 ) | ( bytetemp & FLAG_3 ) | ( (bytetemp & 0x02) ? FLAG_5 : 0 );\nif (regPairs[rpBC]) {\n regPairs[rpPC]-=2;\n tstates += 13;\n} else {\n tstates += 8;\n}\nregPairs[rpHL]--; regPairs[rpDE]--;";
};
LDI = function() {
return "var bytetemp = memory.read(regPairs[rpHL]);\nregPairs[rpBC]--;\nmemory.write(regPairs[rpDE],bytetemp);\nregPairs[rpDE]++; regPairs[rpHL]++;\nbytetemp = (bytetemp + regs[rA]) & 0xff;\nregs[rF] = ( regs[rF] & (FLAG_C | FLAG_Z | FLAG_S) ) | ( regPairs[rpBC] ? FLAG_V : 0 ) | (bytetemp & FLAG_3) | ( (bytetemp & 0x02) ? FLAG_5 : 0 );\ntstates += 8;";
};
LDIR = function() {
return "var bytetemp = memory.read(regPairs[rpHL]);\nmemory.write(regPairs[rpDE],bytetemp);\nregPairs[rpBC]--;\nbytetemp = (bytetemp + regs[rA]) & 0xff;\nregs[rF] = ( regs[rF] & ( FLAG_C | FLAG_Z | FLAG_S ) ) | ( regPairs[rpBC] ? FLAG_V : 0 ) | ( bytetemp & FLAG_3 ) | ( (bytetemp & 0x02) ? FLAG_5 : 0 );\nif (regPairs[rpBC]) {\n regPairs[rpPC]-=2;\n tstates += 13;\n} else {\n tstates += 8;\n}\nregPairs[rpHL]++; regPairs[rpDE]++;";
};
NEG = function() {
return "var val = regs[rA];\nvar subtemp = -val;\nvar lookup = ( (val & 0x88) >> 2 ) | ( (subtemp & 0x88) >> 1 );\nregs[rA] = subtemp;\nregs[rF] = ( subtemp & 0x100 ? FLAG_C : 0 ) | FLAG_N | halfcarrySubTable[lookup & 0x07] | overflowSubTable[lookup >> 4] | sz53Table[regs[rA]];";
};
NOP = function() {
return "";
};
OR_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\n\nregs[rA] |= " + operand.v + ";\nregs[rF] = sz53pTable[regs[rA]];";
};
OUT_iCi_R = function(r) {
return "ioBus.write(regPairs[rpBC], regs[" + r + "]);\ntstates += 4;";
};
OUT_iNi_A = function() {
return "var port = memory.read(regPairs[rpPC]++);\nioBus.write( (regs[rA] << 8) | port, regs[rA]);\ntstates += 7;";
};
POP_RR = function(rp) {
return "var l = memory.read(regPairs[rpSP]++);\nvar h = memory.read(regPairs[rpSP]++);\nregPairs[" + rp + "] = (h<<8) | l;\ntstates += 6;";
};
PUSH_RR = function(rp) {
return "memory.write(--regPairs[rpSP], regPairs[" + rp + "] >> 8);\nmemory.write(--regPairs[rpSP], regPairs[" + rp + "] & 0xff);\ntstates += 7;";
};
RES = function(bit, param) {
var hexMask, operand;
operand = getParamBoilerplate(param, true);
hexMask = 0xff ^ (1 << bit);
return "" + operand.getter + "\n" + operand.v + " &= " + hexMask + ";\n" + operand.setter;
};
RET = function() {
return "var l = memory.read(regPairs[rpSP]++);\nvar h = memory.read(regPairs[rpSP]++);\nregPairs[rpPC] = (h<<8) | l;\ntstates += 6;";
};
RET_C = function(flag, sense) {
if (sense) {
return "if (regs[rF] & " + flag + ") {\n var l = memory.read(regPairs[rpSP]++);\n var h = memory.read(regPairs[rpSP]++);\n regPairs[rpPC] = (h<<8) | l;\n tstates += 7;\n} else {\n tstates += 1;\n}";
} else {
return "if (regs[rF] & " + flag + ") {\n tstates += 1;\n} else {\n var l = memory.read(regPairs[rpSP]++);\n var h = memory.read(regPairs[rpSP]++);\n regPairs[rpPC] = (h<<8) | l;\n tstates += 7;\n}";
}
};
RL = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nvar rltemp = " + operand.v + ";\n" + operand.v + " = ( (" + operand.v + " << 1) | (regs[rF] & FLAG_C) ) " + operand.trunc + ";\nregs[rF] = ( rltemp >> 7 ) | sz53pTable[" + operand.v + "];\n" + operand.setter;
};
RLA = function() {
return "var bytetemp = regs[rA];\nregs[rA] = (regs[rA] << 1) | (regs[rF] & FLAG_C);\nregs[rF] = ( regs[rF] & (FLAG_P | FLAG_Z | FLAG_S) ) | ( regs[rA] & (FLAG_3 | FLAG_5) ) | (bytetemp >> 7);";
};
RLC = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\n" + operand.v + " = ( (" + operand.v + " << 1) | (" + operand.v + " >> 7) ) " + operand.trunc + ";\nregs[rF] = (" + operand.v + " & FLAG_C) | sz53pTable[" + operand.v + "];\n" + operand.setter;
};
RLCA = function() {
return "regs[rA] = (regs[rA] << 1) | (regs[rA] >> 7);\nregs[rF] = ( regs[rF] & ( FLAG_P | FLAG_Z | FLAG_S ) ) | ( regs[rA] & ( FLAG_C | FLAG_3 | FLAG_5) );";
};
RR = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nvar rrtemp = " + operand.v + ";\n" + operand.v + " = ( (" + operand.v + " >> 1) | ( regs[rF] << 7 ) ) " + operand.trunc + ";\nregs[rF] = ( rrtemp & FLAG_C ) | sz53pTable[" + operand.v + "];\n" + operand.setter;
};
RRC = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nregs[rF] = " + operand.v + " & FLAG_C;\n" + operand.v + " = ( (" + operand.v + " >> 1) | (" + operand.v + " << 7) ) " + operand.trunc + ";\nregs[rF] |= sz53pTable[" + operand.v + "];\n" + operand.setter;
};
RRCA = function() {
return "regs[rF] = ( regs[rF] & (FLAG_P | FLAG_Z | FLAG_S) ) | (regs[rA] & FLAG_C);\nregs[rA] = ( regs[rA] >> 1) | ( regs[rA] << 7 );\nregs[rF] |= ( regs[rA] & (FLAG_3 | FLAG_5) );";
};
RRA = function() {
return "var bytetemp = regs[rA];\nregs[rA] = ( bytetemp >> 1 ) | ( regs[rF] << 7 );\nregs[rF] = ( regs[rF] & (FLAG_P | FLAG_Z | FLAG_S) ) | ( regs[rA] & (FLAG_3 | FLAG_5) ) | (bytetemp & FLAG_C);";
};
RST = function(addr) {
return "memory.write(--regPairs[rpSP], regPairs[rpPC] >> 8);\nmemory.write(--regPairs[rpSP], regPairs[rpPC] & 0xff);\nregPairs[rpPC] = " + addr + ";\ntstates += 7;";
};
SBC_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\nvar sbctemp = regs[rA] - " + operand.v + " - ( regs[rF] & FLAG_C );\nvar lookup = ( (regs[rA] & 0x88) >> 3 ) | ( (" + operand.v + " & 0x88) >> 2 ) | ( (sbctemp & 0x88) >> 1 );\nregs[rA] = sbctemp;\nregs[rF] = ( sbctemp & 0x100 ? FLAG_C : 0 ) | FLAG_N | halfcarrySubTable[lookup & 0x07] | overflowSubTable[lookup >> 4] | sz53Table[regs[rA]];";
};
SBC_HL_RR = function(rp) {
return "var sub16temp = regPairs[rpHL] - regPairs[" + rp + "] - (regs[rF] & FLAG_C);\nvar lookup = ( (regPairs[rpHL] & 0x8800) >> 11 ) | ( (regPairs[" + rp + "] & 0x8800) >> 10 ) | ( (sub16temp & 0x8800) >> 9 );\nregPairs[rpHL] = sub16temp;\nregs[rF] = ( sub16temp & 0x10000 ? FLAG_C : 0 ) | FLAG_N | overflowSubTable[lookup >> 4] | ( regs[rH] & ( FLAG_3 | FLAG_5 | FLAG_S ) ) | halfcarrySubTable[lookup&0x07] | ( regPairs[rpHL] ? 0 : FLAG_Z);\ntstates += 7;";
};
SCF = function() {
return "regs[rF] = ( regs[rF] & (FLAG_P | FLAG_Z | FLAG_S) ) | ( regs[rA] & (FLAG_3 | FLAG_5) ) | FLAG_C;";
};
SET = function(bit, param) {
var hexMask, operand;
hexMask = 1 << bit;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\n" + operand.v + " |= " + hexMask + ";\n" + operand.setter;
};
SHIFT = function(prefix) {
return "opcodePrefix = '" + prefix + "';\ninterruptible = false;";
};
SLA = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nregs[rF] = " + operand.v + " >> 7;\n" + operand.v + " = (" + operand.v + " << 1) " + operand.trunc + ";\nregs[rF] |= sz53pTable[" + operand.v + "];\n" + operand.setter;
};
SRA = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nregs[rF] = " + operand.v + " & FLAG_C;\n" + operand.v + " = ( (" + operand.v + " & 0x80) | (" + operand.v + " >> 1) ) " + operand.trunc + ";\nregs[rF] |= sz53pTable[" + operand.v + "];\n" + operand.setter;
};
SRL = function(param) {
var operand;
operand = getParamBoilerplate(param, true);
return "" + operand.getter + "\nregs[rF] = " + operand.v + " & FLAG_C;\n" + operand.v + " >>= 1;\nregs[rF] |= sz53pTable[" + operand.v + "];\n" + operand.setter;
};
SUB_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\nvar subtemp = regs[rA] - " + operand.v + ";\nvar lookup = ( (regs[rA] & 0x88) >> 3 ) | ( (" + operand.v + " & 0x88) >> 2 ) | ( (subtemp & 0x88) >> 1 );\nregs[rA] = subtemp;\nregs[rF] = ( subtemp & 0x100 ? FLAG_C : 0 ) | FLAG_N | halfcarrySubTable[lookup & 0x07] | overflowSubTable[lookup >> 4] | sz53Table[regs[rA]];";
};
XOR_A = function(param) {
var operand;
operand = getParamBoilerplate(param);
return "" + operand.getter + "\nregs[rA] ^= " + operand.v + ";\nregs[rF] = sz53pTable[regs[rA]];";
};
buildRunnerFunctions = function(runStringTable, fallbackTable, passOffsetAsParam) {
var i, runString, runnerFunctions;
if (fallbackTable == null) fallbackTable = {};
if (passOffsetAsParam == null) passOffsetAsParam = false;
runnerFunctions = {};
for (i = 0; 0 <= 0x100 ? i < 0x100 : i > 0x100; 0 <= 0x100 ? i++ : i--) {
runString = runStringTable[i];
if (runString === null) runString = fallbackTable[i];
if (runString !== null) {
if (passOffsetAsParam) {
runnerFunctions[i] = eval("(function(offset) {" + runString + "})");
} else {
runnerFunctions[i] = eval("(function() {" + runString + "})");
}
}
}
return runnerFunctions;
};
opcodeSwitch = function(runStringTable, fallbackTable) {
var clauses, i, runString;
if (fallbackTable == null) fallbackTable = {};
clauses = [];
for (i = 0; 0 <= 0x100 ? i < 0x100 : i > 0x100; 0 <= 0x100 ? i++ : i--) {
runString = runStringTable[i];
if (runString === null) runString = fallbackTable[i];
if (runString !== null) {
clauses.push("case " + i + ":\n " + runString + "\n break;");
}
}
return "switch (opcode) {\n " + (clauses.join('')) + "\n default:\n throw(\"Unimplemented opcode: \" + opcode);\n}";
};
OPCODE_RUN_STRINGS_CB = {
0x00: RLC("B"),
0x01: RLC("C"),
0x02: RLC("D"),
0x03: RLC("E"),
0x04: RLC("H"),
0x05: RLC("L"),
0x06: RLC("(HL)"),
0x07: RLC("A"),
0x08: RRC("B"),
0x09: RRC("C"),
0x0a: RRC("D"),
0x0b: RRC("E"),
0x0c: RRC("H"),
0x0d: RRC("L"),
0x0e: RRC("(HL)"),
0x0f: RRC("A"),
0x10: RL('B'),
0x11: RL('C'),
0x12: RL('D'),
0x13: RL('E'),
0x14: RL('H'),
0x15: RL('L'),
0x16: RL('(HL)'),
0x17: RL('A'),
0x18: RR('B'),
0x19: RR('C'),
0x1a: RR('D'),
0x1b: RR('E'),
0x1c: RR('H'),
0x1d: RR('L'),
0x1e: RR('(HL)'),
0x1f: RR('A'),
0x20: SLA('B'),
0x21: SLA('C'),
0x22: SLA('D'),
0x23: SLA('E'),
0x24: SLA('H'),
0x25: SLA('L'),
0x26: SLA('(HL)'),
0x27: SLA('A'),
0x28: SRA('B'),
0x29: SRA('C'),
0x2a: SRA('D'),
0x2b: SRA('E'),
0x2c: SRA('H'),
0x2d: SRA('L'),
0x2e: SRA('(HL)'),
0x2f: SRA('A'),
0x38: SRL('B'),
0x39: SRL('C'),
0x3a: SRL('D'),
0x3b: SRL('E'),
0x3c: SRL('H'),
0x3d: SRL('L'),
0x3e: SRL('(HL)'),
0x3f: SRL('A'),
0x40: BIT_N_R(0, rB),
0x41: BIT_N_R(0, rC),
0x42: BIT_N_R(0, rD),
0x43: BIT_N_R(0, rE),
0x44: BIT_N_R(0, rH),
0x45: BIT_N_R(0, rL),
0x46: BIT_N_iHLi(0),
0x47: BIT_N_R(0, rA),
0x48: BIT_N_R(1, rB),
0x49: BIT_N_R(1, rC),
0x4A: BIT_N_R(1, rD),
0x4B: BIT_N_R(1, rE),
0x4C: BIT_N_R(1, rH),
0x4D: BIT_N_R(1, rL),
0x4E: BIT_N_iHLi(1),
0x4F: BIT_N_R(1, rA),
0x50: BIT_N_R(2, rB),
0x51: BIT_N_R(2, rC),
0x52: BIT_N_R(2, rD),
0x53: BIT_N_R(2, rE),
0x54: BIT_N_R(2, rH),
0x55: BIT_N_R(2, rL),
0x56: BIT_N_iHLi(2),
0x57: BIT_N_R(2, rA),
0x58: BIT_N_R(3, rB),
0x59: BIT_N_R(3, rC),
0x5A: BIT_N_R(3, rD),
0x5B: BIT_N_R(3, rE),
0x5C: BIT_N_R(3, rH),
0x5D: BIT_N_R(3, rL),
0x5E: BIT_N_iHLi(3),
0x5F: BIT_N_R(3, rA),
0x60: BIT_N_R(4, rB),
0x61: BIT_N_R(4, rC),
0x62: BIT_N_R(4, rD),
0x63: BIT_N_R(4, rE),
0x64: BIT_N_R(4, rH),
0x65: BIT_N_R(4, rL),
0x66: BIT_N_iHLi(4),
0x67: BIT_N_R(4, rA),
0x68: BIT_N_R(5, rB),
0x69: BIT_N_R(5, rC),
0x6A: BIT_N_R(5, rD),
0x6B: BIT_N_R(5, rE),
0x6C: BIT_N_R(5, rH),
0x6D: BIT_N_R(5, rL),
0x6E: BIT_N_iHLi(5),
0x6F: BIT_N_R(5, rA),
0x70: BIT_N_R(6, rB),
0x71: BIT_N_R(6, rC),
0x72: BIT_N_R(6, rD),
0x73: BIT_N_R(6, rE),
0x74: BIT_N_R(6, rH),
0x75: BIT_N_R(6, rL),
0x76: BIT_N_iHLi(6),
0x77: BIT_N_R(6, rA),
0x78: BIT_N_R(7, rB),
0x79: BIT_N_R(7, rC),
0x7A: BIT_N_R(7, rD),
0x7B: BIT_N_R(7, rE),
0x7C: BIT_N_R(7, rH),
0x7D: BIT_N_R(7, rL),
0x7E: BIT_N_iHLi(7),
0x7F: BIT_N_R(7, rA),
0x80: RES(0, 'B'),
0x81: RES(0, 'C'),
0x82: RES(0, 'D'),
0x83: RES(0, 'E'),
0x84: RES(0, 'H'),
0x85: RES(0, 'L'),
0x86: RES(0, '(HL)'),
0x87: RES(0, 'A'),
0x88: RES(1, 'B'),
0x89: RES(1, 'C'),
0x8A: RES(1, 'D'),
0x8B: RES(1, 'E'),
0x8C: RES(1, 'H'),
0x8D: RES(1, 'L'),
0x8E: RES(1, '(HL)'),
0x8F: RES(1, 'A'),
0x90: RES(2, 'B'),
0x91: RES(2, 'C'),
0x92: RES(2, 'D'),
0x93: RES(2, 'E'),
0x94: RES(2, 'H'),
0x95: RES(2, 'L'),
0x96: RES(2, '(HL)'),
0x97: RES(2, 'A'),
0x98: RES(3, 'B'),
0x99: RES(3, 'C'),
0x9A: RES(3, 'D'),
0x9B: RES(3, 'E'),
0x9C: RES(3, 'H'),
0x9D: RES(3, 'L'),
0x9E: RES(3, '(HL)'),
0x9F: RES(3, 'A'),
0xA0: RES(4, 'B'),
0xA1: RES(4, 'C'),
0xA2: RES(4, 'D'),
0xA3: RES(4, 'E'),
0xA4: RES(4, 'H'),
0xA5: RES(4, 'L'),
0xA6: RES(4, '(HL)'),
0xA7: RES(4, 'A'),
0xA8: RES(5, 'B'),
0xA9: RES(5, 'C'),
0xAA: RES(5, 'D'),
0xAB: RES(5, 'E'),
0xAC: RES(5, 'H'),
0xAD: RES(5, 'L'),
0xAE: RES(5, '(HL)'),
0xAF: RES(5, 'A'),
0xB0: RES(6, 'B'),
0xB1: RES(6, 'C'),
0xB2: RES(6, 'D'),
0xB3: RES(6, 'E'),
0xB4: RES(6, 'H'),
0xB5: RES(6, 'L'),
0xB6: RES(6, '(HL)'),
0xB7: RES(6, 'A'),
0xB8: RES(7, 'B'),
0xB9: RES(7, 'C'),
0xBA: RES(7, 'D'),
0xBB: RES(7, 'E'),
0xBC: RES(7, 'H'),
0xBD: RES(7, 'L'),
0xBE: RES(7, '(HL)'),
0xBF: RES(7, 'A'),
0xC0: SET(0, 'B'),
0xC1: SET(0, 'C'),
0xC2: SET(0, 'D'),
0xC3: SET(0, 'E'),
0xC4: SET(0, 'H'),
0xC5: SET(0, 'L'),
0xC6: SET(0, '(HL)'),
0xC7: SET(0, 'A'),
0xC8: SET(1, 'B'),
0xC9: SET(1, 'C'),
0xCA: SET(1, 'D'),
0xCB: SET(1, 'E'),
0xCC: SET(1, 'H'),
0xCD: SET(1, 'L'),
0xCE: SET(1, '(HL)'),
0xCF: SET(1, 'A'),
0xD0: SET(2, 'B'),
0xD1: SET(2, 'C'),
0xD2: SET(2, 'D'),
0xD3: SET(2, 'E'),
0xD4: SET(2, 'H'),
0xD5: SET(2, 'L'),
0xD6: SET(2, '(HL)'),
0xD7: SET(2, 'A'),
0xD8: SET(3, 'B'),
0xD9: SET(3, 'C'),
0xDA: SET(3, 'D'),
0xDB: SET(3, 'E'),
0xDC: SET(3, 'H'),
0xDD: SET(3, 'L'),
0xDE: SET(3, '(HL)'),
0xDF: SET(3, 'A'),
0xE0: SET(4, 'B'),
0xE1: SET(4, 'C'),
0xE2: SET(4, 'D'),
0xE3: SET(4, 'E'),
0xE4: SET(4, 'H'),
0xE5: SET(4, 'L'),
0xE6: SET(4, '(HL)'),
0xE7: SET(4, 'A'),
0xE8: SET(5, 'B'),
0xE9: SET(5, 'C'),
0xEA: SET(5, 'D'),
0xEB: SET(5, 'E'),
0xEC: SET(5, 'H'),
0xED: SET(5, 'L'),
0xEE: SET(5, '(HL)'),
0xEF: SET(5, 'A'),
0xF0: SET(6, 'B'),
0xF1: SET(6, 'C'),
0xF2: SET(6, 'D'),
0xF3: SET(6, 'E'),
0xF4: SET(6, 'H'),
0xF5: SET(6, 'L'),
0xF6: SET(6, '(HL)'),
0xF7: SET(6, 'A'),
0xF8: SET(7, 'B'),
0xF9: SET(7, 'C'),
0xFA: SET(7, 'D'),
0xFB: SET(7, 'E'),
0xFC: SET(7, 'H'),
0xFD: SET(7, 'L'),
0xFE: SET(7, '(HL)'),
0xFF: SET(7, 'A'),
0x100: 'cb'
};
generateddfdcbOpcodeSet = function(prefix) {
var rh, rhn, rl, rln, rp, rpn;
if (prefix === 'DDCB') {
rp = rpIX;
rh = rIXH;
rl = rIXL;
rpn = 'IX';
rhn = 'IXH';
rln = 'IXL';
} else {
rp = rpIY;
rh = rIYH;
rl = rIYL;
rpn = 'IY';
rhn = 'IYH';
rln = 'IYL';
}
return {
0x06: RLC("(" + rpn + "+nn)"),
0x0E: RRC("(" + rpn + "+nn)"),
0x16: RL("(" + rpn + "+nn)"),
0x1E: RR("(" + rpn + "+nn)"),
0x26: SLA("(" + rpn + "+nn)"),
0x2E: SRA("(" + rpn + "+nn)"),
0x3E: SRL("(" + rpn + "+nn)"),
0x46: BIT_N_iRRpNNi(0, rp),
0x4E: BIT_N_iRRpNNi(1, rp),
0x56: BIT_N_iRRpNNi(2, rp),
0x5E: BIT_N_iRRpNNi(3, rp),
0x66: BIT_N_iRRpNNi(4, rp),
0x6E: BIT_N_iRRpNNi(5, rp),
0x76: BIT_N_iRRpNNi(6, rp),
0x7E: BIT_N_iRRpNNi(7, rp),
0x86: RES(0, "(" + rpn + "+nn)"),
0x8E: RES(1, "(" + rpn + "+nn)"),
0x96: RES(2, "(" + rpn + "+nn)"),
0x9E: RES(3, "(" + rpn + "+nn)"),
0xA6: RES(4, "(" + rpn + "+nn)"),
0xAE: RES(5, "(" + rpn + "+nn)"),
0xB6: RES(6, "(" + rpn + "+nn)"),
0xBE: RES(7, "(" + rpn + "+nn)"),
0xC6: SET(0, "(" + rpn + "+nn)"),
0xCE: SET(1, "(" + rpn + "+nn)"),
0xD6: SET(2, "(" + rpn + "+nn)"),
0xDE: SET(3, "(" + rpn + "+nn)"),
0xE6: SET(4, "(" + rpn + "+nn)"),
0xEE: SET(5, "(" + rpn + "+nn)"),
0xF6: SET(6, "(" + rpn + "+nn)"),
0xFE: SET(7, "(" + rpn + "+nn)"),
0x100: 'ddcb'
};
};
OPCODE_RUN_STRINGS_DDCB = generateddfdcbOpcodeSet('DDCB');
OPCODE_RUN_STRINGS_FDCB = generateddfdcbOpcodeSet('FDCB');
generateddfdOpcodeSet = function(prefix) {
var rh, rhn, rl, rln, rp, rpn;
if (prefix === 'DD') {
rp = rpIX;
rh = rIXH;
rl = rIXL;
rpn = 'IX';
rhn = 'IXH';
rln = 'IXL';
} else {
rp = rpIY;
rh = rIYH;
rl = rIYL;
rpn = 'IY';
rhn = 'IYH';
rln = 'IYL';
}
return {
0x09: ADD_RR_RR(rp, rpBC),
0x19: ADD_RR_RR(rp, rpDE),
0x21: LD_RR_NN(rp),
0x22: LD_iNNi_RR(rp),
0x23: INC_RR(rp),
0x24: INC(rhn),
0x25: DEC(rhn),
0x26: LD_R_N(rh),
0x29: ADD_RR_RR(rp, rp),
0x2A: LD_RR_iNNi(rp),
0x2B: DEC_RR(rp),
0x2C: INC(rln),
0x2D: DEC(rln),
0x2E: LD_R_N(rl),
0x34: INC("(" + rpn + "+nn)"),
0x35: DEC("(" + rpn + "+nn)"),
0x36: LD_iRRpNNi_N(rp),
0x39: ADD_RR_RR(rp, rpSP),
0x44: LD_R_R(rB, rh),
0x45: LD_R_R(rB, rl),
0x46: LD_R_iRRpNNi(rB, rp),
0x4C: LD_R_R(rC, rh),
0x4D: LD_R_R(rC, rl),
0x4E: LD_R_iRRpNNi(rC, rp),
0x54: LD_R_R(rD, rh),
0x55: LD_R_R(rD, rl),
0x56: LD_R_iRRpNNi(rD, rp),
0x5C: LD_R_R(rE, rh),
0x5D: LD_R_R(rE, rl),
0x5E: LD_R_iRRpNNi(rE, rp),
0x60: LD_R_R(rh, rB),
0x61: LD_R_R(rh, rC),
0x62: LD_R_R(rh, rD),
0x63: LD_R_R(rh, rE),
0x64: LD_R_R(rh, rh),
0x65: LD_R_R(rh, rl),
0x66: LD_R_iRRpNNi(rH, rp),
0x67: LD_R_R(rh, rA),
0x68: LD_R_R(rl, rB),
0x69: LD_R_R(rl, rC),
0x6A: LD_R_R(rl, rD),
0x6B: LD_R_R(rl, rE),
0x6C: LD_R_R(rl, rh),
0x6D: LD_R_R(rl, rl),
0x6E: LD_R_iRRpNNi(rL, rp),
0x6F: LD_R_R(rl, rA),
0x70: LD_iRRpNNi_R(rp, rB),
0x71: LD_iRRpNNi_R(rp, rC),
0x72: LD_iRRpNNi_R(rp, rD),
0x73: LD_iRRpNNi_R(rp, rE),
0x74: LD_iRRpNNi_R(rp, rH),
0x75: LD_iRRpNNi_R(rp, rL),
0x77: LD_iRRpNNi_R(rp, rA),
0x7C: LD_R_R(rA, rh),
0x7D: LD_R_R(rA, rl),
0x7E: LD_R_iRRpNNi(rA, rp),
0x84: ADD_A(rhn),
0x85: ADD_A(rln),
0x86: ADD_A("(" + rpn + "+nn)"),
0x8C: ADC_A(rhn),
0x8D: ADC_A(rln),
0x8E: ADC_A("(" + rpn + "+nn)"),
0x94: SUB_A(rhn),
0x95: SUB_A(rln),
0x96: SUB_A("(" + rpn + "+nn)"),
0x9C: SBC_A(rhn),
0x9D: SBC_A(rln),
0x9E: SBC_A("(" + rpn + "+nn)"),
0xA4: AND_A(rhn),
0xA5: AND_A(rln),
0xA6: AND_A("(" + rpn + "+nn)"),
0xAC: XOR_A(rhn),
0xAD: XOR_A(rln),
0xAE: XOR_A("(" + rpn + "+nn)"),
0xB4: OR_A(rhn),
0xB5: OR_A(rln),
0xB6: OR_A("(" + rpn + "+nn)"),
0xBC: CP_A(rhn),
0xBD: CP_A(rln),
0xBE: CP_A("(" + rpn + "+nn)"),
0xCB: SHIFT(prefix + 'CB'),
0xDD: SHIFT('DD'),
0xE1: POP_RR(rp),
0xE3: EX_iSPi_RR(rp),
0xE5: PUSH_RR(rp),
0xE9: JP_RR(rp),
0xF9: LD_RR_RR(rpSP, rp),
0xFD: SHIFT('FD'),
0x100: 'dd'
};
};
OPCODE_RUN_STRINGS_DD = generateddfdOpcodeSet('DD');
OPCODE_RUN_STRINGS_ED = {
0x40: IN_R_iCi(rB),
0x41: OUT_iCi_R(rB),
0x42: SBC_HL_RR(rpBC),
0x43: LD_iNNi_RR(rpBC),
0x44: NEG(),
0x46: IM(0),
0x47: LD_R_R(rI, rA),
0x48: IN_R_iCi(rC),
0x49: OUT_iCi_R(rC),
0x4B: LD_RR_iNNi(rpBC),
0x50: IN_R_iCi(rD),
0x51: OUT_iCi_R(rD),
0x52: SBC_HL_RR(rpDE),
0x53: LD_iNNi_RR(rpDE),
0x56: IM(1),
0x58: IN_R_iCi(rE),
0x59: OUT_iCi_R(rE),
0x5B: LD_RR_iNNi(rpDE),
0x5E: IM(2),
0x60: IN_R_iCi(rH),
0x61: OUT_iCi_R(rH),
0x62: SBC_HL_RR(rpHL),
0x68: IN_R_iCi(rL),
0x69: OUT_iCi_R(rL),
0x6B: LD_RR_iNNi(rpHL, true),
0x72: SBC_HL_RR(rpSP),
0x73: LD_iNNi_RR(rpSP),
0x78: IN_R_iCi(rA),
0x79: OUT_iCi_R(rA),
0x7B: LD_RR_iNNi(rpSP),
0xA0: LDI(),
0xB0: LDIR(),
0xb1: CPIR(),
0xB8: LDDR(),
0xb9: CPDR(),
0x100: 'ed'
};
OPCODE_RUN_STRINGS_FD = generateddfdOpcodeSet('FD');
OPCODE_RUN_STRINGS = {
0x00: NOP(),
0x01: LD_RR_NN(rpBC),
0x02: LD_iRRi_R(rpBC, rA),
0x03: INC_RR(rpBC),
0x04: INC("B"),
0x05: DEC("B"),
0x06: LD_R_N(rB),
0x07: RLCA(),
0x08: EX_RR_RR(rpAF, rpAF_),
0x09: ADD_RR_RR(rpHL, rpBC),
0x0A: LD_R_iRRi(rA, rpBC),
0x0B: DEC_RR(rpBC),
0x0C: INC("C"),
0x0D: DEC("C"),
0x0E: LD_R_N(rC),
0x0F: RRCA(),
0x10: DJNZ_N(),
0x11: LD_RR_NN(rpDE),
0x12: LD_iRRi_R(rpDE, rA),
0x13: INC_RR(rpDE),
0x14: INC("D"),
0x15: DEC("D"),
0x16: LD_R_N(rD),
0x17: RLA(),
0x18: JR_N(),
0x19: ADD_RR_RR(rpHL, rpDE),
0x1A: LD_R_iRRi(rA, rpDE),
0x1B: DEC_RR(rpDE),
0x1C: INC("E"),
0x1D: DEC("E"),
0x1E: LD_R_N(rE),
0x1F: RRA(),
0x20: JR_C_N(FLAG_Z, false),
0x21: LD_RR_NN(rpHL),