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More 8080 opcodes

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This commit is contained in:
Jeff Parsons 2016-04-24 07:26:33 -07:00
commit ccc71d4508
4 changed files with 469 additions and 237 deletions
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195
modules/pc8080/lib/cpuops.js
View file

@ -1594,6 +1594,193 @@ CPUDef.opADCA = function()
this.nStepCycles -= 4;
};
/**
* op=0x90 (SUB B)
*
* @this {CPUSim}
*/
CPUDef.opSUBB = function()
{
this.regA = this.subByte(this.regA, this.regB);
this.nStepCycles -= 4;
};
/**
* op=0x91 (SUB C)
*
* @this {CPUSim}
*/
CPUDef.opSUBC = function()
{
this.regA = this.subByte(this.regA, this.regC);
this.nStepCycles -= 4;
};
/**
* op=0x92 (SUB D)
*
* @this {CPUSim}
*/
CPUDef.opSUBD = function()
{
this.regA = this.subByte(this.regA, this.regD);
this.nStepCycles -= 4;
};
/**
* op=0x93 (SUB E)
*
* @this {CPUSim}
*/
CPUDef.opSUBE = function()
{
this.regA = this.subByte(this.regA, this.regE);
this.nStepCycles -= 4;
};
/**
* op=0x94 (SUB H)
*
* @this {CPUSim}
*/
CPUDef.opSUBH = function()
{
this.regA = this.subByte(this.regA, this.regH);
this.nStepCycles -= 4;
};
/**
* op=0x95 (SUB L)
*
* @this {CPUSim}
*/
CPUDef.opSUBL = function()
{
this.regA = this.subByte(this.regA, this.regL);
this.nStepCycles -= 4;
};
/**
* op=0x96 (SUB M)
*
* @this {CPUSim}
*/
CPUDef.opSUBM = function()
{
this.regA = this.subByte(this.regA, this.getByte(this.getHL()));
this.nStepCycles -= 7;
};
/**
* op=0x97 (SUB A)
*
* @this {CPUSim}
*/
CPUDef.opSUBA = function()
{
this.regA = this.subByte(this.regA, this.regA);
this.nStepCycles -= 4;
};
/**
* op=0x98 (SBB B)
*
* @this {CPUSim}
*/
CPUDef.opSBBB = function()
{
this.regA = this.subByteBorrow(this.regA, this.regB);
this.nStepCycles -= 4;
};
/**
* op=0x99 (SBB C)
*
* @this {CPUSim}
*/
CPUDef.opSBBC = function()
{
this.regA = this.subByteBorrow(this.regA, this.regC);
this.nStepCycles -= 4;
};
/**
* op=0x9A (SBB D)
*
* @this {CPUSim}
*/
CPUDef.opSBBD = function()
{
this.regA = this.subByteBorrow(this.regA, this.regD);
this.nStepCycles -= 4;
};
/**
* op=0x9B (SBB E)
*
* @this {CPUSim}
*/
CPUDef.opSBBE = function()
{
this.regA = this.subByteBorrow(this.regA, this.regE);
this.nStepCycles -= 4;
};
/**
* op=0x9C (SBB H)
*
* @this {CPUSim}
*/
CPUDef.opSBBH = function()
{
this.regA = this.subByteBorrow(this.regA, this.regH);
this.nStepCycles -= 4;
};
/**
* op=0x9D (SBB L)
*
* @this {CPUSim}
*/
CPUDef.opSBBL = function()
{
this.regA = this.subByteBorrow(this.regA, this.regL);
this.nStepCycles -= 4;
};
/**
* op=0x9E (SBB M)
*
* @this {CPUSim}
*/
CPUDef.opSBBM = function()
{
this.regA = this.subByteBorrow(this.regA, this.getByte(this.getHL()));
this.nStepCycles -= 7;
};
/**
* op=0x9F (SBB A)
*
* @this {CPUSim}
*/
CPUDef.opSBBA = function()
{
this.regA = this.subByteBorrow(this.regA, this.regA);
this.nStepCycles -= 4;
};
/**
* op=0xA0 (ANA B)
*
* @this {CPUSim}
*/
CPUDef.opANAB = function()
{
this.regA = this.andByte(this.regA, this.regB);
this.nStepCycles -= 4;
};
/**
* opTBD()
*
@ -1650,10 +1837,10 @@ CPUDef.aOps = [
/* 0x84-0x87 */ CPUDef.opADDH, CPUDef.opADDL, CPUDef.opADDM, CPUDef.opADDA,
/* 0x88-0x8B */ CPUDef.opADCB, CPUDef.opADCC, CPUDef.opADCD, CPUDef.opADCE,
/* 0x8C-0x8F */ CPUDef.opADCH, CPUDef.opADCL, CPUDef.opADCM, CPUDef.opADCA,
/* 0x90-0x93 */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0x94-0x97 */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0x98-0x9B */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0x9C-0x9F */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0x90-0x93 */ CPUDef.opSUBB, CPUDef.opSUBC, CPUDef.opSUBD, CPUDef.opSUBE,
/* 0x94-0x97 */ CPUDef.opSUBH, CPUDef.opSUBL, CPUDef.opSUBM, CPUDef.opSUBA,
/* 0x98-0x9B */ CPUDef.opSBBB, CPUDef.opSBBC, CPUDef.opSBBD, CPUDef.opSBBE,
/* 0x9C-0x9F */ CPUDef.opSBBH, CPUDef.opSBBL, CPUDef.opSBBM, CPUDef.opSBBA,
/* 0xA0-0xA3 */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0xA4-0xA7 */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,
/* 0xA8-0xAB */ CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD, CPUDef.opTBD,

41
modules/pc8080/lib/cpusim.js
View file

@ -777,6 +777,47 @@ CPUSim.prototype.addByteCarry = function(dst, src)
return (this.resultZeroCarry = this.resultParitySign = dst + src + ((this.resultZeroCarry & 0x100)? 1 : 0)) & 0xff;
};
/**
* subByte(dst, src)
*
* @this {CPUSim}
* @param {number} dst
* @param {number} src
* @return {number} dst - src
*/
CPUSim.prototype.subByte = function(dst, src)
{
this.resultAuxOverflow = dst ^ src;
return (this.resultZeroCarry = this.resultParitySign = dst - src) & 0xff;
};
/**
* subByteBorrow(dst, src)
*
* @this {CPUSim}
* @param {number} dst
* @param {number} src
* @return {number} dst - src - carry
*/
CPUSim.prototype.subByteBorrow = function(dst, src)
{
this.resultAuxOverflow = dst ^ src;
return (this.resultZeroCarry = this.resultParitySign = dst - src - ((this.resultZeroCarry & 0x100)? 1 : 0)) & 0xff;
};
/**
* andByte(dst, src)
*
* @this {CPUSim}
* @param {number} dst
* @param {number} src
* @return {number} dst & src
*/
CPUSim.prototype.andByte = function(dst, src)
{
return this.resultZeroCarry = this.resultParitySign = this.resultAuxOverflow = dst & src;
};
/**
* getByte(addr)
*