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|
/***************************************************************************
main.cpp - description
-------------------
begin : Thu May 11 06:22:40 BST 2000
copyright : (C) 2000 by Simon White
email : s_a_white@email.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/***************************************************************************
* $Log: mos6510.cpp,v $
* Revision 1.8 2001/08/05 15:46:38 s_a_white
* No longer need to check on which cycle to print debug information.
*
* Revision 1.7 2001/07/14 13:04:34 s_a_white
* Accumulator is now unsigned, which improves code readability.
*
* Revision 1.6 2001/03/09 22:27:46 s_a_white
* Speed optimisation update.
*
* Revision 1.5 2001/02/13 23:01:10 s_a_white
* envReadMemDataByte now used for debugging.
*
* Revision 1.4 2000/12/11 19:03:16 s_a_white
* AC99 Update.
*
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "sidtypes.h"
#include "sidendian.h"
#include "sidenv.h"
#include "conf6510.h"
#include "opcodes.h"
#ifdef HAVE_EXCEPTIONS
# include <new>
#endif
#ifdef MOS6510_STATE_6510
# include "state6510.h"
# include "state6510.cpp"
#else
#include "mos6510.h"
// Check to see what type of emulation is required
#ifdef MOS6510_CYCLE_BASED
# include "cycle_based/mos6510c.i"
# ifdef MOS6510_SIDPLAY
// Compile in sidplay code
# include "cycle_based/sid6510c.i"
# endif // MOS6510_SIDPLAY
#else
// Line based emulation code has not been provided
#endif // MOS6510_CYCLE_BASED
void MOS6510::DumpState (void)
{
uint8_t opcode, data;
uint_least16_t operand, address;
printf(" PC I A X Y SP DR PR NV-BDIZC Instruction\n");
printf("%04x ", instrStartPC);
printf("%u ", interrupts.irqs);
printf("%02x ", Register_Accumulator);
printf("%02x ", Register_X);
printf("%02x ", Register_Y);
printf("01%02x ", endian_16lo8 (Register_StackPointer));
printf("%02x ", envReadMemDataByte (0));
printf("%02x ", envReadMemDataByte (1));
if (getFlagN()) printf ("1"); else printf ("0");
if (getFlagV()) printf ("1"); else printf ("0");
if (Register_Status & (1 << SR_NOTUSED)) printf ("1"); else printf ("0");
if (Register_Status & (1 << SR_BREAK)) printf ("1"); else printf ("0");
if (getFlagD()) printf ("1"); else printf ("0");
if (getFlagI()) printf ("1"); else printf ("0");
if (getFlagZ()) printf ("1"); else printf ("0");
if (getFlagC()) printf ("1"); else printf ("0");
opcode = instrOpcode;
operand = Instr_Operand;
data = Cycle_Data;
switch (opcode)
{
case BCCr: case BCSr: case BEQr: case BMIr: case BNEr: case BPLr:
case BVCr: case BVSr:
address = (uint_least16_t) (Register_ProgramCounter + (int8_t) operand);
break;
default:
address = Cycle_EffectiveAddress;
break;
}
printf(" %02x ", opcode);
switch(opcode)
{
//Accumulator or Implied addressing
case ASLn: case LSRn: case ROLn: case RORn:
printf(" ");
break;
//Zero Page Addressing Mode Handler
case ADCz: case ANDz: case ASLz: case BITz: case CMPz: case CPXz:
case CPYz: case DCPz: case DECz: case EORz: case INCz: case ISBz:
case LAXz: case LDAz: case LDXz: case LDYz: case LSRz: case NOPz_:
case ORAz: case ROLz: case RORz: case SAXz: case SBCz: case SREz:
case STAz: case STXz: case STYz: case SLOz: case RLAz: case RRAz:
//ASOz AXSz DCMz INSz LSEz - Optional Opcode Names
printf("%02x ", (uint8_t) operand);
break;
//Zero Page with X Offset Addressing Mode Handler
case ADCzx: case ANDzx: case ASLzx: case CMPzx: case DCPzx: case DECzx:
case EORzx: case INCzx: case ISBzx: case LDAzx: case LDYzx: case LSRzx:
case NOPzx_: case ORAzx: case RLAzx: case ROLzx: case RORzx: case RRAzx:
case SBCzx: case SLOzx: case SREzx: case STAzx: case STYzx:
//ASOzx DCMzx INSzx LSEzx - Optional Opcode Names
printf("%02x ", (uint8_t) operand);
break;
//Zero Page with Y Offset Addressing Mode Handler
case LDXzy: case STXzy: case SAXzy: case LAXzy:
//AXSzx - Optional Opcode Names
printf("%02x ", endian_16lo8 (operand));
break;
//Absolute Addressing Mode Handler
case ADCa: case ANDa: case ASLa: case BITa: case CMPa: case CPXa:
case CPYa: case DCPa: case DECa: case EORa: case INCa: case ISBa:
case JMPw: case JSRw: case LAXa: case LDAa: case LDXa: case LDYa:
case LSRa: case NOPa: case ORAa: case ROLa: case RORa: case SAXa:
case SBCa: case SLOa: case SREa: case STAa: case STXa: case STYa:
case RLAa: case RRAa:
//ASOa AXSa DCMa INSa LSEa - Optional Opcode Names
printf("%02x %02x ", endian_16lo8 (operand), endian_16hi8 (operand));
break;
//Absolute With X Offset Addresing Mode Handler
case ADCax: case ANDax: case ASLax: case CMPax: case DCPax: case DECax:
case EORax: case INCax: case ISBax: case LDAax: case LDYax: case LSRax:
case NOPax_: case ORAax: case RLAax: case ROLax: case RORax: case RRAax:
case SBCax: case SHYax: case SLOax: case SREax: case STAax:
//ASOax DCMax INSax LSEax SAYax - Optional Opcode Names
printf("%02x %02x ", endian_16lo8 (operand), endian_16hi8 (operand));
break;
//Absolute With Y Offset Addresing Mode Handler
case ADCay: case ANDay: case CMPay: case DCPay: case EORay: case ISBay:
case LASay: case LAXay: case LDAay: case LDXay: case ORAay: case RLAay:
case RRAay: case SBCay: case SHAay: case SHSay: case SHXay: case SLOay:
case SREay: case STAay:
//ASOay AXAay DCMay INSax LSEay TASay XASay - Optional Opcode Names
printf("%02x %02x ", endian_16lo8 (operand), endian_16hi8 (operand));
break;
//Immediate and Relative Addressing Mode Handler
case ADCb: case ANDb: case ANCb_: case ANEb: case ASRb: case ARRb:
case CMPb: case CPXb: case CPYb: case EORb: case LDAb: case LDXb:
case LDYb: case LXAb: case NOPb_: case ORAb: case SBCb_: case SBXb:
//OALb ALRb XAAb - Optional Opcode Names
printf("%02x ", endian_16lo8 (operand));
break;
case BCCr: case BCSr: case BEQr: case BMIr: case BNEr: case BPLr:
case BVCr: case BVSr:
printf("%02x ", endian_16lo8 (operand));
break;
//Indirect Addressing Mode Handler
case JMPi:
printf("%02x %02x ", endian_16lo8 (operand), endian_16hi8 (operand));
break;
//Indexed with X Preinc Addressing Mode Handler
case ADCix: case ANDix: case CMPix: case DCPix: case EORix: case ISBix:
case LAXix: case LDAix: case ORAix: case SAXix: case SBCix: case SLOix:
case SREix: case STAix: case RLAix: case RRAix:
//ASOix AXSix DCMix INSix LSEix - Optional Opcode Names
printf("%02x ", endian_16lo8 (operand));
break;
//Indexed with Y Postinc Addressing Mode Handler
case ADCiy: case ANDiy: case CMPiy: case DCPiy: case EORiy: case ISBiy:
case LAXiy: case LDAiy: case ORAiy: case RLAiy: case RRAiy: case SBCiy:
case SHAiy: case SLOiy: case SREiy: case STAiy:
//AXAiy ASOiy LSEiy DCMiy INSiy - Optional Opcode Names
printf("%02x ", endian_16lo8 (operand));
break;
default:
printf(" ");
break;
}
switch(opcode)
{
case ADCb: case ADCz: case ADCzx: case ADCa: case ADCax: case ADCay:
case ADCix: case ADCiy:
printf(" ADC"); break;
case ANCb_:
printf("*ANC"); break;
case ANDb: case ANDz: case ANDzx: case ANDa: case ANDax: case ANDay:
case ANDix: case ANDiy:
printf(" AND"); break;
case ANEb: //Also known as XAA
printf("*ANE"); break;
case ARRb:
printf("*ARR"); break;
case ASLn: case ASLz: case ASLzx: case ASLa: case ASLax:
printf(" ASL"); break;
case ASRb: //Also known as ALR
printf("*ASR"); break;
case BCCr:
printf(" BCC"); break;
case BCSr:
printf(" BCS"); break;
case BEQr:
printf(" BEQ"); break;
case BITz: case BITa:
printf(" BIT"); break;
case BMIr:
printf(" BMI"); break;
case BNEr:
printf(" BNE"); break;
case BPLr:
printf(" BPL"); break;
case BRKn:
printf(" BRK"); break;
case BVCr:
printf(" BVC"); break;
case BVSr:
printf(" BVS"); break;
case CLCn:
printf(" CLC"); break;
case CLDn:
printf(" CLD"); break;
case CLIn:
printf(" CLI"); break;
case CLVn:
printf(" CLV"); break;
case CMPb: case CMPz: case CMPzx: case CMPa: case CMPax: case CMPay:
case CMPix: case CMPiy:
printf(" CMP"); break;
case CPXb: case CPXz: case CPXa:
printf(" CPX"); break;
case CPYb: case CPYz: case CPYa:
printf(" CPY"); break;
case DCPz: case DCPzx: case DCPa: case DCPax: case DCPay: case DCPix:
case DCPiy: //Also known as DCM
printf("*DCP"); break;
case DECz: case DECzx: case DECa: case DECax:
printf(" DEC"); break;
case DEXn:
printf(" DEX"); break;
case DEYn:
printf(" DEY"); break;
case EORb: case EORz: case EORzx: case EORa: case EORax: case EORay:
case EORix: case EORiy:
printf(" EOR"); break;
case INCz: case INCzx: case INCa: case INCax:
printf(" INC"); break;
case INXn:
printf(" INX"); break;
case INYn:
printf(" INY"); break;
case ISBz: case ISBzx: case ISBa: case ISBax: case ISBay: case ISBix:
case ISBiy: //Also known as INS
printf("*ISB"); break;
case JMPw: case JMPi:
printf(" JMP"); break;
case JSRw:
printf(" JSR"); break;
case LASay:
printf("*LAS"); break;
case LAXz: case LAXzy: case LAXa: case LAXay: case LAXix: case LAXiy:
printf("*LAX"); break;
case LDAb: case LDAz: case LDAzx: case LDAa: case LDAax: case LDAay:
case LDAix: case LDAiy:
printf(" LDA"); break;
case LDXb: case LDXz: case LDXzy: case LDXa: case LDXay:
printf(" LDX"); break;
case LDYb: case LDYz: case LDYzx: case LDYa: case LDYax:
printf(" LDY"); break;
case LSRz: case LSRzx: case LSRa: case LSRax: case LSRn:
printf(" LSR"); break;
case NOPn_: case NOPb_: case NOPz_: case NOPzx_: case NOPa: case NOPax_:
if(opcode != NOPn) printf("*");
else printf(" ");
printf("NOP"); break;
case LXAb: //Also known as OAL
printf("*LXA"); break;
case ORAb: case ORAz: case ORAzx: case ORAa: case ORAax: case ORAay:
case ORAix: case ORAiy:
printf(" ORA"); break;
case PHAn:
printf(" PHA"); break;
case PHPn:
printf(" PHP"); break;
case PLAn:
printf(" PLA"); break;
case PLPn:
printf(" PLP"); break;
case RLAz: case RLAzx: case RLAix: case RLAa: case RLAax: case RLAay:
case RLAiy:
printf("*RLA"); break;
case ROLz: case ROLzx: case ROLa: case ROLax: case ROLn:
printf(" ROL"); break;
case RORz: case RORzx: case RORa: case RORax: case RORn:
printf(" ROR"); break;
case RRAa: case RRAax: case RRAay: case RRAz: case RRAzx: case RRAix:
case RRAiy:
printf("*RRA"); break;
case RTIn:
printf(" RTI"); break;
case RTSn:
printf(" RTS"); break;
case SAXz: case SAXzy: case SAXa: case SAXix: //Also known as AXS
printf("*SAX"); break;
case SBCb_:
if(opcode != SBCb) printf("*");
else printf(" ");
printf ("SBC"); break;
case SBCz: case SBCzx: case SBCa: case SBCax: case SBCay: case SBCix:
case SBCiy:
printf(" SBC"); break;
case SBXb:
printf("*SBX"); break;
case SECn:
printf(" SEC"); break;
case SEDn:
printf(" SED"); break;
case SEIn:
printf(" SEI"); break;
case SHAay: case SHAiy: //Also known as AXA
printf("*SHA"); break;
case SHSay: //Also known as TAS
printf("*SHS"); break;
case SHXay: //Also known as XAS
printf("*SHX"); break;
case SHYax: //Also known as SAY
printf("*SHY"); break;
case SLOz: case SLOzx: case SLOa: case SLOax: case SLOay: case SLOix:
case SLOiy: //Also known as ASO
printf("*SLO"); break;
case SREz: case SREzx: case SREa: case SREax: case SREay: case SREix:
case SREiy: //Also known as LSE
printf("*SRE"); break;
case STAz: case STAzx: case STAa: case STAax: case STAay: case STAix:
case STAiy:
printf(" STA"); break;
case STXz: case STXzy: case STXa:
printf(" STX"); break;
case STYz: case STYzx: case STYa:
printf(" STY"); break;
case TAXn:
printf(" TAX"); break;
case TAYn:
printf(" TAY"); break;
case TSXn:
printf(" TSX"); break;
case TXAn:
printf(" TXA"); break;
case TXSn:
printf(" TXS"); break;
case TYAn:
printf(" TYA"); break;
default:
printf("*HLT"); break;
}
switch(opcode)
{
//Accumulator or Implied addressing
case ASLn: case LSRn: case ROLn: case RORn:
printf("n A");
break;
//Zero Page Addressing Mode Handler
case ADCz: case ANDz: case ASLz: case BITz: case CMPz: case CPXz:
case CPYz: case DCPz: case DECz: case EORz: case INCz: case ISBz:
case LAXz: case LDAz: case LDXz: case LDYz: case LSRz: case ORAz:
case ROLz: case RORz: case SBCz: case SREz: case SLOz: case RLAz:
case RRAz:
//ASOz AXSz DCMz INSz LSEz - Optional Opcode Names
printf("z %02x {%02x}", (uint8_t) operand, data);
break;
case SAXz: case STAz: case STXz: case STYz:
#ifdef MOS6510_DEBUG
case NOPz_:
#endif
printf("z %02x", endian_16lo8 (operand));
break;
//Zero Page with X Offset Addressing Mode Handler
case ADCzx: case ANDzx: case ASLzx: case CMPzx: case DCPzx: case DECzx:
case EORzx: case INCzx: case ISBzx: case LDAzx: case LDYzx: case LSRzx:
case ORAzx: case RLAzx: case ROLzx: case RORzx: case RRAzx: case SBCzx:
case SLOzx: case SREzx:
//ASOzx DCMzx INSzx LSEzx - Optional Opcode Names
printf("zx %02x,X", endian_16lo8 (operand));
printf(" [%04x]{%02x}", address, data);
break;
case STAzx: case STYzx:
#ifdef MOS6510_DEBUG
case NOPzx_:
#endif
printf("zx %02x,X", endian_16lo8 (operand));
printf(" [%04x]", address);
break;
//Zero Page with Y Offset Addressing Mode Handler
case LAXzy: case LDXzy:
//AXSzx - Optional Opcode Names
printf("zy %02x,Y", endian_16lo8 (operand));
printf(" [%04x]{%02x}", address, data);
break;
case STXzy: case SAXzy:
printf("zy %02x,Y", endian_16lo8 (operand));
printf(" [%04x]", address);
break;
//Absolute Addressing Mode Handler
case ADCa: case ANDa: case ASLa: case BITa: case CMPa: case CPXa:
case CPYa: case DCPa: case DECa: case EORa: case INCa: case ISBa:
case LAXa: case LDAa: case LDXa: case LDYa: case LSRa: case ORAa:
case ROLa: case RORa: case SBCa: case SLOa: case SREa: case RLAa:
case RRAa:
//ASOa AXSa DCMa INSa LSEa - Optional Opcode Names
printf("a %04x {%02x}", operand, data);
break;
case SAXa: case STAa: case STXa: case STYa:
#ifdef MOS6510_DEBUG
case NOPa:
#endif
printf("a %04x", operand);
break;
case JMPw: case JSRw:
printf("w %04x", operand);
break;
//Absolute With X Offset Addresing Mode Handler
case ADCax: case ANDax: case ASLax: case CMPax: case DCPax: case DECax:
case EORax: case INCax: case ISBax: case LDAax: case LDYax: case LSRax:
case ORAax: case RLAax: case ROLax: case RORax: case RRAax: case SBCax:
case SLOax: case SREax:
//ASOax DCMax INSax LSEax SAYax - Optional Opcode Names
printf("ax %04x,X", operand);
printf(" [%04x]{%02x}", address, data);
break;
case SHYax: case STAax:
#ifdef MOS6510_DEBUG
case NOPax_:
#endif
printf("ax %04x,X", operand);
printf(" [%04x]", address);
break;
//Absolute With Y Offset Addresing Mode Handler
case ADCay: case ANDay: case CMPay: case DCPay: case EORay: case ISBay:
case LASay: case LAXay: case LDAay: case LDXay: case ORAay: case RLAay:
case RRAay: case SBCay: case SHSay: case SLOay: case SREay:
//ASOay AXAay DCMay INSax LSEay TASay XASay - Optional Opcode Names
printf("ay %04x,Y", operand);
printf(" [%04x]{%02x}", address, data);
break;
case SHAay: case SHXay: case STAay:
printf("ay %04x,Y", operand);
printf(" [%04x]", address);
break;
//Immediate Addressing Mode Handler
case ADCb: case ANDb: case ANCb_: case ANEb: case ASRb: case ARRb:
case CMPb: case CPXb: case CPYb: case EORb: case LDAb: case LDXb:
case LDYb: case LXAb: case ORAb: case SBCb_: case SBXb:
//OALb ALRb XAAb - Optional Opcode Names
#ifdef MOS6510_DEBUG
case NOPb_:
#endif
printf("b #%02x", endian_16lo8 (operand));
break;
//Relative Addressing Mode Handler
case BCCr: case BCSr: case BEQr: case BMIr: case BNEr: case BPLr:
case BVCr: case BVSr:
printf("r #%02x", endian_16lo8 (operand));
printf(" [%04x]", address);
break;
//Indirect Addressing Mode Handler
case JMPi:
printf("i (%04x)", operand);
printf(" [%04x]", address);
break;
//Indexed with X Preinc Addressing Mode Handler
case ADCix: case ANDix: case CMPix: case DCPix: case EORix: case ISBix:
case LAXix: case LDAix: case ORAix: case SBCix: case SLOix: case SREix:
case RLAix: case RRAix:
//ASOix AXSix DCMix INSix LSEix - Optional Opcode Names
printf("ix (%02x,X)", endian_16lo8 (operand));
printf(" [%04x]{%02x}", address, data);
break;
case SAXix: case STAix:
printf("ix (%02x,X)", endian_16lo8 (operand));
printf(" [%04x]", address);
break;
//Indexed with Y Postinc Addressing Mode Handler
case ADCiy: case ANDiy: case CMPiy: case DCPiy: case EORiy: case ISBiy:
case LAXiy: case LDAiy: case ORAiy: case RLAiy: case RRAiy: case SBCiy:
case SLOiy: case SREiy:
//AXAiy ASOiy LSEiy DCMiy INSiy - Optional Opcode Names
printf("iy (%02x),Y", endian_16lo8 (operand));
printf(" [%04x]{%02x}", address, data);
break;
case SHAiy: case STAiy:
printf("iy (%02x),Y", endian_16lo8 (operand));
printf(" [%04x]", address);
break;
default:
break;
}
printf ("\n\n");
fflush (stdout);
}
#endif // MOS6510_STATE_6510
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