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debjitbis08/8085.pegjs

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PEG.js file for the 8080/8085 assembly language
Raw
8085.pegjs
{
var machineCode = [];
var symbolTable = {};
var ilc = 0;
var mnemonics = {
"nop" : {code:0x00,size:1},
"lxi b,d16" : {code:0x01,size:3},
"stax b" : {code:0x02,size:1},
"inx b" : {code:0x03,size:1},
"inr b" : {code:0x04,size:1},
"dcr b" : {code:0x05,size:1},
"mvi b,d8" : {code:0x06,size:2},
"rlc" : {code:0x07,size:1},
"dad b" : {code:0x09,size:1},
"ldax b" : {code:0x0A,size:1},
"dcx b" : {code:0x0B,size:1},
"inr c" : {code:0x0C,size:1},
"dcr c" : {code:0x0D,size:1},
"mvi c,d8" : {code:0x0E,size:2},
"rrc" : {code:0x0F,size:1},
"lxi d,d16" : {code:0x11,size:3},
"stax d" : {code:0x12,size:1},
"inx d" : {code:0x13,size:1},
"inr d" : {code:0x14,size:1},
"dcr d" : {code:0x15,size:1},
"mvi d,d8" : {code:0x16,size:2},
"ral" : {code:0x17,size:1},
"dad d" : {code:0x19,size:1},
"ldax d" : {code:0x1A,size:1},
"dcx d" : {code:0x1B,size:1},
"inr e" : {code:0x1C,size:1},
"dcr e" : {code:0x1D,size:1},
"mvi e,d8" : {code:0x1E,size:2},
"rar" : {code:0x1F,size:1},
"rim" : {code:0x20,size:1},
"lxi h,d16" : {code:0x21,size:3},
"shld adr" : {code:0x22,size:3},
"inx h" : {code:0x23,size:1},
"inr h" : {code:0x24,size:1},
"dcr h" : {code:0x25,size:1},
"mvi h,d8" : {code:0x26,size:2},
"daa" : {code:0x27,size:1},
"dad h" : {code:0x29,size:1},
"lhld adr" : {code:0x2A,size:3},
"dcx h" : {code:0x2B,size:1},
"inr l" : {code:0x2C,size:1},
"dcr l" : {code:0x2D,size:1},
"mvi l,d8" : {code:0x2E,size:2},
"cma" : {code:0x2F,size:1},
"sim" : {code:0x30,size:1},
"lxi sp,d16": {code:0x31,size:3},
"sta adr" : {code:0x32,size:3},
"inx sp" : {code:0x33,size:1},
"inr m" : {code:0x34,size:1},
"dcr m" : {code:0x35,size:1},
"mvi m,d8" : {code:0x36,size:2},
"stc" : {code:0x37,size:1},
"dad sp" : {code:0x39,size:1},
"lda adr" : {code:0x3A,size:3},
"dcx sp" : {code:0x3B,size:1},
"inr a" : {code:0x3C,size:1},
"dcr a" : {code:0x3D,size:1},
"mvi a,d8" : {code:0x3E,size:2},
"cmc" : {code:0x3F,size:1},
"mov b,b" : {code:0x40,size:1},
"mov b,c" : {code:0x41,size:1},
"mov b,d" : {code:0x42,size:1},
"mov b,e" : {code:0x43,size:1},
"mov b,h" : {code:0x44,size:1},
"mov b,l" : {code:0x45,size:1},
"mov b,m" : {code:0x46,size:1},
"mov b,a" : {code:0x47,size:1},
"mov c,b" : {code:0x48,size:1},
"mov c,c" : {code:0x49,size:1},
"mov c,d" : {code:0x4A,size:1},
"mov c,e" : {code:0x4B,size:1},
"mov c,h" : {code:0x4C,size:1},
"mov c,l" : {code:0x4D,size:1},
"mov c,m" : {code:0x4E,size:1},
"mov c,a" : {code:0x4F,size:1},
"mov d,b" : {code:0x50,size:1},
"mov d,c" : {code:0x51,size:1},
"mov d,d" : {code:0x52,size:1},
"mov d,e" : {code:0x53,size:1},
"mov d,h" : {code:0x54,size:1},
"mov d,l" : {code:0x55,size:1},
"mov d,m" : {code:0x56,size:1},
"mov d,a" : {code:0x57,size:1},
"mov e,b" : {code:0x58,size:1},
"mov e,c" : {code:0x59,size:1},
"mov e,d" : {code:0x5A,size:1},
"mov e,e" : {code:0x5B,size:1},
"mov e,h" : {code:0x5C,size:1},
"mov e,l" : {code:0x5D,size:1},
"mov e,m" : {code:0x5E,size:1},
"mov e,a" : {code:0x5F,size:1},
"mov h,b" : {code:0x60,size:1},
"mov h,c" : {code:0x61,size:1},
"mov h,d" : {code:0x62,size:1},
"mov h,e" : {code:0x63,size:1},
"mov h,h" : {code:0x64,size:1},
"mov h,l" : {code:0x65,size:1},
"mov h,m" : {code:0x66,size:1},
"mov h,a" : {code:0x67,size:1},
"mov l,b" : {code:0x68,size:1},
"mov l,c" : {code:0x69,size:1},
"mov l,d" : {code:0x6A,size:1},
"mov l,e" : {code:0x6B,size:1},
"mov l,h" : {code:0x6C,size:1},
"mov l,l" : {code:0x6D,size:1},
"mov l,m" : {code:0x6E,size:1},
"mov l,a" : {code:0x6F,size:1},
"mov m,b" : {code:0x70,size:1},
"mov m,c" : {code:0x71,size:1},
"mov m,d" : {code:0x72,size:1},
"mov m,e" : {code:0x73,size:1},
"mov m,h" : {code:0x74,size:1},
"mov m,l" : {code:0x75,size:1},
"hlt" : {code:0x76,size:1},
"mov m,a" : {code:0x77,size:1},
"mov a,b" : {code:0x78,size:1},
"mov a,c" : {code:0x79,size:1},
"mov a,d" : {code:0x7A,size:1},
"mov a,e" : {code:0x7B,size:1},
"mov a,h" : {code:0x7C,size:1},
"mov a,l" : {code:0x7D,size:1},
"mov a,m" : {code:0x7E,size:1},
"mov a,a" : {code:0x7F,size:1},
"add b" : {code:0x80,size:1},
"add c" : {code:0x81,size:1},
"add d" : {code:0x82,size:1},
"add e" : {code:0x83,size:1},
"add h" : {code:0x84,size:1},
"add l" : {code:0x85,size:1},
"add m" : {code:0x86,size:1},
"add a" : {code:0x87,size:1},
"adc b" : {code:0x88,size:1},
"adc c" : {code:0x89,size:1},
"adc d" : {code:0x8A,size:1},
"adc e" : {code:0x8B,size:1},
"adc h" : {code:0x8C,size:1},
"adc l" : {code:0x8D,size:1},
"adc m" : {code:0x8E,size:1},
"adc a" : {code:0x8F,size:1},
"sub b" : {code:0x90,size:1},
"sub c" : {code:0x91,size:1},
"sub d" : {code:0x92,size:1},
"sub e" : {code:0x93,size:1},
"sub h" : {code:0x94,size:1},
"sub l" : {code:0x95,size:1},
"sub m" : {code:0x96,size:1},
"sub a" : {code:0x97,size:1},
"sbb b" : {code:0x98,size:1},
"sbb c" : {code:0x99,size:1},
"sbb d" : {code:0x9A,size:1},
"sbb e" : {code:0x9B,size:1},
"sbb h" : {code:0x9C,size:1},
"sbb l" : {code:0x9D,size:1},
"sbb m" : {code:0x9E,size:1},
"sbb a" : {code:0x9F,size:1},
"ana b" : {code:0xA0,size:1},
"ana c" : {code:0xA1,size:1},
"ana d" : {code:0xA2,size:1},
"ana e" : {code:0xA3,size:1},
"ana h" : {code:0xA4,size:1},
"ana l" : {code:0xA5,size:1},
"ana m" : {code:0xA6,size:1},
"ana a" : {code:0xA7,size:1},
"xra b" : {code:0xA8,size:1},
"xra c" : {code:0xA9,size:1},
"xra d" : {code:0xAA,size:1},
"xra e" : {code:0xAB,size:1},
"xra h" : {code:0xAC,size:1},
"xra l" : {code:0xAD,size:1},
"xra m" : {code:0xAE,size:1},
"xra a" : {code:0xAF,size:1},
"ora b" : {code:0xB0,size:1},
"ora c" : {code:0xB1,size:1},
"ora d" : {code:0xB2,size:1},
"ora e" : {code:0xB3,size:1},
"ora h" : {code:0xB4,size:1},
"ora l" : {code:0xB5,size:1},
"ora m" : {code:0xB6,size:1},
"ora a" : {code:0xB7,size:1},
"cmp b" : {code:0xB8,size:1},
"cmp c" : {code:0xB9,size:1},
"cmp d" : {code:0xBA,size:1},
"cmp e" : {code:0xBB,size:1},
"cmp h" : {code:0xBC,size:1},
"cmp l" : {code:0xBD,size:1},
"cmp m" : {code:0xBE,size:1},
"cmp a" : {code:0xBF,size:1},
"rnz" : {code:0xC0,size:1},
"pop b" : {code:0xC1,size:1},
"jnz adr" : {code:0xC2,size:3},
"jmp adr" : {code:0xC3,size:3},
"cnz adr" : {code:0xC4,size:3},
"push b" : {code:0xC5,size:1},
"adi d8" : {code:0xC6,size:2},
"rst 0" : {code:0xC7,size:1},
"rz" : {code:0xC8,size:1},
"ret" : {code:0xC9,size:1},
"jz adr" : {code:0xCA,size:3},
"cz adr" : {code:0xCC,size:3},
"call adr" : {code:0xCD,size:3},
"aci d8" : {code:0xCE,size:2},
"rst 1" : {code:0xCF,size:1},
"rnc" : {code:0xD0,size:1},
"pop d" : {code:0xD1,size:1},
"jnc adr" : {code:0xD2,size:3},
"out d8" : {code:0xD3,size:2},
"cnc adr" : {code:0xD4,size:3},
"push d" : {code:0xD5,size:1},
"sui d8" : {code:0xD6,size:2},
"rst 2" : {code:0xD7,size:1},
"rc" : {code:0xD8,size:1},
"jc adr" : {code:0xDA,size:3},
"in d8" : {code:0xDB,size:2},
"cc adr" : {code:0xDC,size:3},
"sbi d8" : {code:0xDE,size:2},
"rst 3" : {code:0xDF,size:1},
"rpo" : {code:0xE0,size:1},
"pop h" : {code:0xE1,size:1},
"jpo adr" : {code:0xE2,size:3},
"xthl" : {code:0xE3,size:1},
"cpo adr" : {code:0xE4,size:3},
"push h" : {code:0xE5,size:1},
"ani d8" : {code:0xE6,size:2},
"rst 4" : {code:0xE7,size:1},
"rpe" : {code:0xE8,size:1},
"pchl" : {code:0xE9,size:1},
"jpe adr" : {code:0xEA,size:3},
"xchg" : {code:0xEB,size:1},
"cpe adr" : {code:0xEC,size:3},
"xri d8" : {code:0xEE,size:2},
"rst 5" : {code:0xEF,size:1},
"rp" : {code:0xF0,size:1},
"pop psw" : {code:0xF1,size:1},
"jp adr" : {code:0xF2,size:3},
"di" : {code:0xF3,size:1},
"cp adr" : {code:0xF4,size:3},
"push psw" : {code:0xF5,size:1},
"ori d8" : {code:0xF6,size:2},
"rst 6" : {code:0xF7,size:1},
"rm" : {code:0xF8,size:1},
"sphl" : {code:0xF9,size:1},
"jm adr" : {code:0xFA,size:3},
"ei" : {code:0xFB,size:1},
"cm adr" : {code:0xFC,size:3},
"cpi d8" : {code:0xFE,size:2},
"rst 7" : {code:0xFF,size:1}
};
var twosComplement = function (d8) {
return (0xFF + d8 + 1);
};
}
/**
* Create Object code from intermediate
* code and symbol table.
*/
machineCode = prg:program {
var i = 0,
line,
lines = prg.length,
data,
dataVal,
objCode = [];
for (i = 0; i < lines; i += 1) {
line = prg[i];
if (!line.opcode) continue;
if (line.size === 1) {
objCode.push(line.opcode);
} else if (line.size === 2) {
data = line.data;
dataVal = (typeof data === "string") ? symbolTable[data] : data;
if (dataVal < 0) {
dataVal = twosComplement(dataVal);
}
objCode.push(line.opcode);
objCode.push(dataVal);
} else {
data = line.data;
dataVal = (typeof data === "string") ? symbolTable[data] : data;
objCode.push(line.opcode);
objCode.push(dataVal & 0xFF);
objCode.push(dataVal >> 8);
}
}
return objCode;
}
/**
* Create intermediate object code with symbol strings.
*/
program = __ first:line rest:(eol l:line {return l})* {return [first].concat(rest);}
line = whitespace* label:labelPart? op:operation? comment:comment? {
if (label !== "") {
symbolTable[label] = ilc;
}
ilc += op.size;
return op;
}
labelPart = label:label ":" whitespace* {return label;}
label = first:[a-zA-Z?@] rest:([a-zA-Z0-9]*) {return first + rest.join("");}
paramList = whitespace+ first:value rest:(whitespace* ',' whitespace* v:value { return v; })* {
return [first].concat(rest);
}
value = register / label
register = l:[AaBbCcDdEeHhLlMm] !identLetter { return l.toLowerCase(); }
registerPair = l:[BbDdHh] !identLetter { return l.toLowerCase(); }
registerPairB = l:[Bb] !identLetter { return l.toLowerCase(); }
registerPairD = l:[Dd] !identLetter { return l.toLowerCase(); }
registerPairH = l:[Hh] !identLetter { return l.toLowerCase(); }
registerPairPSW = l:("PSW" / "psw") !identLetter { return l.toLowerCase(); }
stackPointer = l:("SP" / "sp") !identLetter { return l.toLowerCase(); }
data8 = n:numLiteral {
if (n > 0xFF) {
var e = new Error();
e.message = "8-bit data expected.";
if (typeof line !== "undefined" && typeof column !== "undefined") {
e.line = line; e.column = column;
}
throw e;
} else {
return n;
}
}
data16 = n:numLiteral {
if (n > 0xFFFF) {
var e = new Error();
e.message = "16-bit data expected.";
if (typeof line !== "undefined" && typeof column !== "undefined") {
e.line = line; e.column = column;
}
throw e;
} else {
return n;
}
}
numLiteral "numeric literal" = binLiteral / hexLiteral / decLiteral
decLiteral "decimal literal" = neg:[-]? digits:digit+ {
return parseInt((!neg ? "":"-") + digits.join(""), 10);
}
hexLiteral "hex literal" = hexForm1 / hexForm2
hexForm1 = '0x' hexits:hexit+ {
return parseInt(hexits.join(""), 16);
}
hexForm2 = hexits:hexit+ ("H" / "h") {
return parseInt(hexits.join(""), 16);
}
binLiteral "binary literal" =
'0b' bits:bit+ { return parseInt(bits.join(""), 2); }
identifier "identifier" = ltrs:identLetter+ { return ltrs.join(""); }
identLetter "letter/underscore" = [a-zA-Z_]
digit "digit" = [0-9]
hexit "hex digit" = [0-9a-fA-F]
bit "bit" = [01]
//expression "expression" =
comment "comment" = ";" c:[^\n\r\n\u2028\u2029]* {return c.join("");}
__ = (whitespace / eol )*
eol "line end" = "\n" / "\r\n" / "\r" / "\u2028" / "\u2029"
whitespace "whitespace" = [ \t\v\f\u00A0\uFEFF\u1680\u180E\u2000-\u200A\u202F\u205F\u3000]
operation = inst:(carryBitInstructions / singleRegInstructions / nopInstruction /
dataTransferInstructions / regOrMemToAccInstructions / rotateAccInstructions /
regPairInstructions / immediateInstructions / directAddressingInstructions /
jumpInstructions / callInstructions / returnInstructions / haltInstruction) whitespace* {
var paramTypes = inst.paramTypes,
data,
paramTypesStr = paramTypes.join(","),
opcode = mnemonics[inst.name.toLowerCase() + (paramTypesStr === "" ? "" : " ") + paramTypesStr];
if (typeof paramTypes[0] !== "undefined" &&
(paramTypes[0] === "adr" || paramTypes[0] === "d16" || paramTypes[0] === "d8")) {
data = inst.params[0];
}
else if (typeof paramTypes[1] !== "undefined" &&
(paramTypes[1] === "adr" || paramTypes[1] === "d16" || paramTypes[1] === "d8")) {
data = inst.params[1];
}
return {
opcode: opcode.code,
data: data,
size: opcode.size
};
}
carryBitInstructions = op:(op_stc / op_cmc) {
return {
name: op,
paramTypes:[],
params: []
};
}
singleRegInstructions = op:(op_inr / op_dcr / op_cma / op_daa) {
var name, params, paramTypes;
if (typeof op === "string") {
name = op;
params = [];
paramTypes = [];
} else {
name = op[0];
paramTypes = [op[2]];
params = [op[2]];
}
return {
name: name,
paramTypes: paramTypes,
params: params
};
}
nopInstruction = op:(op_nop) {
return {
name: op,
paramTypes: [],
params: []
}
}
dataTransferInstructions = op:(op_mov / op_stax / op_ldax) {
var name = op[0].toLowerCase(),
params,
paramTypes;
if (name === "mov") {
params = [op[2],op[6]];
paramTypes = params;
} else {
params = [op[2]];
paramTypes = params;
}
return {
name: name,
params: params,
paramTypes: paramTypes
}
}
regOrMemToAccInstructions = op:(op_add / op_adc / op_sub / op_sbb / op_ana / op_xra / op_ora / op_cmp) {
return {
name: op[0],
paramTypes: [op[2]],
params: [op[2]]
}
}
rotateAccInstructions = op:(op_rlc / op_rrc / op_ral / op_rar) {
return {
name: op,
paramTypes: [],
params: []
}
}
regPairInstructions = op:(op_push / op_pop / op_dad / op_inx / op_dcx / op_xchg / op_xthl / op_sphl) {
var name, params, paramTypes;
if (typeof op === "string") {
name = op;
params = [];
paramTypes = [];
} else {
name = op[0];
params = [op[2]];
paramTypes = [op[2]];
}
return {
name: name,
params: params,
paramTypes: paramTypes
};
}
immediateInstructions = op:(op_lxi / op_mvi / op_adi / op_aci / op_sui / op_sbi / op_ani / op_xri / op_ori / op_cpi) {
var name = op[0].toLowerCase(), params, paramTypes;
if (name === "lxi") {
params = [op[2],op[6]];
paramTypes = [op[2],"d16"];
} else if (name === "mvi") {
params = [op[2],op[6]];
paramTypes = [op[2],"d8"];
} else {
params = [op[2]];
paramTypes = ["d8"];
}
return {
name: name,
params: params,
paramTypes: paramTypes
};
}
directAddressingInstructions = op:(op_sta / op_lda / op_shld / op_lhld) {
return {
name: op[0],
params: [op[2]],
paramTypes: ["adr"]
}
}
jumpInstructions = op:(op_pchl / op_jmp / op_jc / op_jnc / op_jz / op_jnz / op_jp / op_jm / op_jpe / op_jpo) {
var name,
params,
paramTypes;
if (typeof op === "string") {
name = op;
params = [];
paramTypes = [];
} else {
name = op[0];
params = [op[2]];
paramTypes = ["adr"];
}
return {
name: name,
params: params,
paramTypes: paramTypes
};
}
callInstructions = op:(op_call / op_cc / op_cnc / op_cz / op_cnz / op_cp / op_cm / op_cpe / op_cpo) {
return {
name: op[0],
params: [op[2]],
paramTypes: ["adr"]
};
}
returnInstructions = op:(op_ret / op_rc / op_rnc / op_rz / op_rnz / op_rm / op_rp / op_rpe / op_rpo) {
return {
name: op,
params: [],
paramTypes: []
};
}
/*
resetInstruction = op:(op_rst) {
}
*/
haltInstruction = op:(op_hlt) {
return {
name: op,
params: [],
paramTypes: []
};
}
op_stc = ("STC" / "stc" )
op_cmc = ("CMC" / "cmc" )
op_cma = ("CMA" / "cma" )
op_daa = ("DAA" / "daa" )
op_sphl = ("SPHL" / "sphl")
op_pchl = ("PCHL" / "pchl")
op_hlt = ("HLT" / "hlt" )
op_rlc = ("RLC" / "rlc" )
op_rrc = ("RRC" / "rrc" )
op_rar = ("RAR" / "rar" )
op_ral = ("RAL" / "ral" )
op_ret = ("RET" / "ret" )
op_rc = ("RC" / "rc" )
op_rnc = ("RNC" / "rnc" )
op_rz = ("RZ" / "rz" )
op_rnz = ("RNZ" / "rnz" )
op_rp = ("RP" / "rp" )
op_rm = ("RM" / "rm" )
op_rpe = ("RPE" / "rpe" )
op_rpo = ("RPO" / "rpo" )
op_xchg = ("XCHG" / "xchg")
op_xthl = ("XTHL" / "xthl")
op_ei = ("EI" / "ei" )
op_di = ("DI" / "di" )
op_nop = ("NOP" / "nop" )
op_inr = ("INR" / "inr" ) whitespace+ register
op_dcr = ("DCR" / "dcr" ) whitespace+ register
op_stax = ("STAX" / "stax") whitespace+ (registerPairB / registerPairD)
op_ldax = ("LDAX" / "ldax") whitespace+ (registerPairB / registerPairD)
op_add = ("ADD" / "add" ) whitespace+ register
op_adc = ("ADC" / "adc" ) whitespace+ register
op_sub = ("SUB" / "sub" ) whitespace+ register
op_sbb = ("SBB" / "sbb" ) whitespace+ register
op_ana = ("ANA" / "ana" ) whitespace+ register
op_xra = ("XRA" / "xra" ) whitespace+ register
op_ora = ("ORA" / "ora" ) whitespace+ register
op_cmp = ("CMP" / "cmp" ) whitespace+ register
op_push = ("PUSH" / "push") whitespace+ (registerPair / registerPairPSW)
op_pop = ("POP" / "pop" ) whitespace+ (registerPair / registerPairPSW)
op_dad = ("DAD" / "dad" ) whitespace+ (registerPair / stackPointer)
op_inx = ("INX" / "inx" ) whitespace+ (registerPair / stackPointer)
op_dcx = ("DCX" / "dcx" ) whitespace+ (registerPair / stackPointer)
op_adi = ("ADI" / "adi" ) whitespace+ (data8 / label)
op_aci = ("ACI" / "aci" ) whitespace+ (data8 / label)
op_sui = ("SUI" / "sui" ) whitespace+ (data8 / label)
op_sbi = ("SBI" / "sbi" ) whitespace+ (data8 / label)
op_ani = ("ANI" / "ani" ) whitespace+ (data8 / label)
op_xri = ("XRI" / "xri" ) whitespace+ (data8 / label)
op_ori = ("ORI" / "ori" ) whitespace+ (data8 / label)
op_cpi = ("CPI" / "cpi" ) whitespace+ (data8 / label)
op_sta = ("STA" / "sta" ) whitespace+ (data16 / label)
op_lda = ("LDA" / "lda" ) whitespace+ (data16 / label)
op_shld = ("SHLD" / "shld") whitespace+ (data16 / label)
op_lhld = ("LHLD" / "lhld") whitespace+ (data16 / label)
op_jmp = ("JMP" / "jmp" ) whitespace+ (data16 / label)
op_jc = ("JC" / "jc" ) whitespace+ (data16 / label)
op_jnc = ("JNC" / "jnc" ) whitespace+ (data16 / label)
op_jz = ("JZ" / "jz" ) whitespace+ (data16 / label)
op_jnz = ("JNZ" / "jnz" ) whitespace+ (data16 / label)
op_jm = ("JM" / "jm" ) whitespace+ (data16 / label)
op_jp = ("JP" / "jp" ) whitespace+ (data16 / label)
op_jpe = ("JPE" / "jpe" ) whitespace+ (data16 / label)
op_jpo = ("JPO" / "jpo" ) whitespace+ (data16 / label)
op_call = ("CALL" / "call") whitespace+ (data16 / label)
op_cc = ("CC" / "cc" ) whitespace+ (data16 / label)
op_cnc = ("CNC" / "cnc" ) whitespace+ (data16 / label)
op_cz = ("CZ" / "cz" ) whitespace+ (data16 / label)
op_cnz = ("CNZ" / "cnz" ) whitespace+ (data16 / label)
op_cm = ("CM" / "cm" ) whitespace+ (data16 / label)
op_cp = ("CP" / "cp" ) whitespace+ (data16 / label)
op_cpe = ("CPE" / "cpe" ) whitespace+ (data16 / label)
op_cpo = ("CPO" / "cpo" ) whitespace+ (data16 / label)
op_mov = ("MOV" / "mov" ) whitespace+ register whitespace* [,] whitespace* register
op_lxi = ("LXI" / "lxi" ) whitespace+ register whitespace* [,] whitespace* (data16 / label)
op_mvi = ("MVI" / "mvi" ) whitespace+ register whitespace* [,] whitespace* (data8 / label)
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