6502
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EightBit/M6502/src/mos6502.cpp

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#include "stdafx.h"
#include "mos6502.h"
MOS6502::MOS6502(ProcessorType cpuLevel)
: level(cpuLevel)
{
Install6502Instructions();
Install65sc02Instructions();
Install65c02Instructions();
}
void MOS6502::Initialise() {
cycles = 0;
ResetRegisters();
}
void MOS6502::Start(uint16_t address) {
pc = address;
}
void MOS6502::Run() {
while (proceed)
Step();
}
void MOS6502::Step() {
Execute(FetchByte());
}
void MOS6502::Reset() {
pc = GetWord(RSTvector);
}
void MOS6502::TriggerIRQ() {
Interrupt(IRQvector);
}
void MOS6502::TriggerNMI() {
Interrupt(NMIvector);
}
uint16_t MOS6502::GetWord(uint16_t offset) const {
auto low = GetByte(offset);
auto high = GetByte((uint16_t)(offset + 1));
return MakeWord(low, high);
}
void MOS6502::Interrupt(uint16_t vector) {
PushWord(pc);
PushByte(p);
p.interrupt = true;
pc = GetWord(vector);
}
void MOS6502::Execute(uint8_t cell) {
const auto& instruction = instructions[cell];
const auto& method = instruction.vector;
method();
cycles += instruction.count;
}
void MOS6502::___() {
if (level >= ProcessorType::Cpu65SC02) {
// Generally, missing instructions act as a one byte,
// one cycle NOP instruction on 65c02 (ish) processors.
NOP_imp();
cycles++;
} else {
throw new std::domain_error("Whoops: Invalid instruction.");
}
}
void MOS6502::ResetRegisters() {
pc = 0;
x = 0x80;
y = 0;
a = 0;
p = 0;
p.reserved = true;
s = 0xff;
}
MOS6502::Instruction MOS6502::INS(instruction_t method, uint64_t cycles, AddressingMode addressing, std::string display) {
MOS6502::Instruction returnValue;
returnValue.vector = method;
returnValue.count = cycles;
returnValue.mode = addressing;
returnValue.display = display;
return returnValue;
}
uint8_t MOS6502::LowNybble(uint8_t value) {
return value & 0xf;
}
uint8_t MOS6502::HighNybble(uint8_t value) {
return DemoteNybble(value);
}
uint8_t MOS6502::PromoteNybble(uint8_t value) {
return value << 4;
}
uint8_t MOS6502::DemoteNybble(uint8_t value) {
return value >> 4;
}
uint8_t MOS6502::LowByte(uint16_t value) {
return value & 0xff;
}
uint8_t MOS6502::HighByte(uint16_t value) {
return (value & ~0xff) >> 8;
}
uint16_t MOS6502::MakeWord(uint8_t low, uint8_t high) {
return (high << 8) + low;
}
////
#define BIND(method) std::bind(&MOS6502:: method, this)
void MOS6502::Install6502Instructions() {
overlay6502 = {
//// 0 1 2 3 4 5 6 7 8 9 A B C D E F
/* 0 */ INS(BIND(BRK_imp), 7, AddressingMode::Implied, "BRK"), INS(BIND(ORA_xind), 6, AddressingMode::XIndexed, "ORA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ORA_zp), 4, AddressingMode::ZeroPage, "ORA"), INS(BIND(ASL_zp), 5, AddressingMode::ZeroPage, "ASL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(PHP_imp), 3, AddressingMode::Implied, "PHP"), INS(BIND(ORA_imm), 2, AddressingMode::Immediate, "ORA"), INS(BIND(ASL_a), 2, AddressingMode::Accumulator, "ASL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ORA_abs), 4, AddressingMode::Absolute, "ORA"), INS(BIND(ASL_abs), 6, AddressingMode::Absolute, "ASL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 1 */ INS(BIND(BPL_rel), 2, AddressingMode::Relative, "BPL"), INS(BIND(ORA_indy), 5, AddressingMode::IndexedY, "ORA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ORA_zpx), 4, AddressingMode::ZeroPageX, "ORA"), INS(BIND(ASL_zpx), 6, AddressingMode::ZeroPageX, "ASL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CLC_imp), 2, AddressingMode::Implied, "CLC"), INS(BIND(ORA_absy), 4, AddressingMode::AbsoluteY, "ORA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ORA_absx), 4, AddressingMode::AbsoluteX, "ORA"), INS(BIND(ASL_absx), 7, AddressingMode::AbsoluteX, "ASL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 2 */ INS(BIND(JSR_abs), 6, AddressingMode::Absolute, "JSR"), INS(BIND(AND_xind), 6, AddressingMode::XIndexed, "AND"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BIT_zp), 3, AddressingMode::ZeroPage, "BIT"), INS(BIND(AND_zp), 3, AddressingMode::ZeroPage, "AND"), INS(BIND(ROL_zp), 5, AddressingMode::ZeroPage, "ROL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(PLP_imp), 4, AddressingMode::Implied, "PLP"), INS(BIND(AND_imm),2, AddressingMode::Immediate, "AND"), INS(BIND(ROL_a), 2, AddressingMode::Accumulator, "ROL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BIT_abs), 4, AddressingMode::Absolute, "BIT"), INS(BIND(AND_abs), 4, AddressingMode::Absolute, "AND"), INS(BIND(ROL_abs), 6, AddressingMode::Absolute, "ROL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 3 */ INS(BIND(BMI_rel), 2, AddressingMode::Relative, "BMI"), INS(BIND(AND_indy), 5, AddressingMode::IndexedY, "AND"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(AND_zpx), 4, AddressingMode::ZeroPageX, "AND"), INS(BIND(ROL_zpx), 6, AddressingMode::ZeroPageX, "ROL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SEC_imp), 2, AddressingMode::Implied, "SEC"), INS(BIND(AND_absy), 4, AddressingMode::AbsoluteY, "AND"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(AND_absx), 4, AddressingMode::AbsoluteX, "AND"), INS(BIND(ROL_absx), 7, AddressingMode::AbsoluteX, "ROL"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 4 */ INS(BIND(RTI_imp), 6, AddressingMode::Implied, "RTI"), INS(BIND(EOR_xind), 6, AddressingMode::XIndexed, "EOR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(EOR_zp), 3, AddressingMode::ZeroPage, "EOR"), INS(BIND(LSR_zp), 5, AddressingMode::ZeroPage, "LSR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(PHA_imp), 3, AddressingMode::Implied, "PHA"), INS(BIND(EOR_imm),2, AddressingMode::Immediate, "EOR"), INS(BIND(LSR_a), 2, AddressingMode::Accumulator, "LSR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(JMP_abs), 3, AddressingMode::Absolute, "JMP"), INS(BIND(EOR_abs), 4, AddressingMode::Absolute, "EOR"), INS(BIND(LSR_abs), 6, AddressingMode::Absolute, "LSR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 5 */ INS(BIND(BVC_rel), 2, AddressingMode::Relative, "BVC"), INS(BIND(EOR_indy), 5, AddressingMode::IndexedY, "EOR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(EOR_zpx), 4, AddressingMode::ZeroPageX, "EOR"), INS(BIND(LSR_zpx), 6, AddressingMode::ZeroPageX, "LSR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CLI_imp), 2, AddressingMode::Implied, "CLI"), INS(BIND(EOR_absy), 4, AddressingMode::AbsoluteY, "EOR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(EOR_absx), 4, AddressingMode::AbsoluteX, "EOR"), INS(BIND(LSR_absx), 7, AddressingMode::AbsoluteX, "LSR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 6 */ INS(BIND(RTS_imp), 6, AddressingMode::Implied, "RTS"), INS(BIND(ADC_xind), 6, AddressingMode::XIndexed, "ADC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ADC_zp), 3, AddressingMode::ZeroPage, "ADC"), INS(BIND(ROR_zp), 5, AddressingMode::ZeroPage, "ROR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(PLA_imp), 4, AddressingMode::Implied, "PLA"), INS(BIND(ADC_imm),2, AddressingMode::Immediate, "ADC"), INS(BIND(ROR_a), 2, AddressingMode::Accumulator, "ROR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(JMP_ind), 5, AddressingMode::Indirect, "JMP"), INS(BIND(ADC_abs), 4, AddressingMode::Absolute, "ADC"), INS(BIND(ROR_abs), 6, AddressingMode::Absolute, "ROR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 7 */ INS(BIND(BVS_rel), 2, AddressingMode::Relative, "BVS"), INS(BIND(ADC_indy), 5, AddressingMode::IndexedY, "ADC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ADC_zpx), 4, AddressingMode::ZeroPageX, "ADC"), INS(BIND(ROR_zpx), 6, AddressingMode::ZeroPageX, "ROR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SEI_imp), 2, AddressingMode::Implied, "SEI"), INS(BIND(ADC_absy), 4, AddressingMode::AbsoluteY, "ADC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ADC_absx), 4, AddressingMode::AbsoluteX, "ADC"), INS(BIND(ROR_absx), 7, AddressingMode::AbsoluteX, "ROR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 8 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STA_xind), 6, AddressingMode::XIndexed, "STA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STY_zp), 3, AddressingMode::ZeroPage, "STY"), INS(BIND(STA_zp), 3, AddressingMode::ZeroPage, "STA"), INS(BIND(STX_zp), 3, AddressingMode::ZeroPage, "STX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(DEY_imp), 2, AddressingMode::Implied, "DEY"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TXA_imp), 2, AddressingMode::Implied, "TXA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STY_abs), 4, AddressingMode::Absolute, "STY"), INS(BIND(STA_abs), 4, AddressingMode::Absolute, "STA"), INS(BIND(STX_abs), 4, AddressingMode::Absolute, "STX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* 9 */ INS(BIND(BCC_rel), 2, AddressingMode::Relative, "BCC"), INS(BIND(STA_indy), 6, AddressingMode::IndexedY, "STA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STY_zpx), 4, AddressingMode::ZeroPageX, "STY"), INS(BIND(STA_zpx), 4, AddressingMode::ZeroPageX, "STA"), INS(BIND(STX_zpy), 4, AddressingMode::ZeroPageY, "STX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TYA_imp), 2, AddressingMode::Implied, "TYA"), INS(BIND(STA_absy), 5, AddressingMode::AbsoluteY, "STA"), INS(BIND(TXS_imp), 2, AddressingMode::Implied, "TXS"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STA_absx), 5, AddressingMode::AbsoluteX, "STA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* A */ INS(BIND(LDY_imm), 2, AddressingMode::Immediate, "LDY"), INS(BIND(LDA_xind), 6, AddressingMode::XIndexed, "LDA"), INS(BIND(LDX_imm), 2, AddressingMode::Immediate, "LDX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(LDY_zp), 3, AddressingMode::ZeroPage, "LDY"), INS(BIND(LDA_zp), 3, AddressingMode::ZeroPage, "LDA"), INS(BIND(LDX_zp), 3, AddressingMode::ZeroPage, "LDX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TAY_imp), 2, AddressingMode::Implied, "TAY"), INS(BIND(LDA_imm),2, AddressingMode::Immediate, "LDA"), INS(BIND(TAX_imp), 2, AddressingMode::Implied, "TAX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(LDY_abs), 4, AddressingMode::Absolute, "LDY"), INS(BIND(LDA_abs), 4, AddressingMode::Absolute, "LDA"), INS(BIND(LDX_abs), 4, AddressingMode::Absolute, "LDX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* B */ INS(BIND(BCS_rel), 2, AddressingMode::Relative, "BCS"), INS(BIND(LDA_indy), 5, AddressingMode::IndexedY, "LDA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(LDY_zpx), 4, AddressingMode::ZeroPageX, "LDY"), INS(BIND(LDA_zpx), 4, AddressingMode::ZeroPageX, "LDA"), INS(BIND(LDX_zpy), 4, AddressingMode::ZeroPageY, "LDX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CLV_imp), 2, AddressingMode::Implied, "CLV"), INS(BIND(LDA_absy), 4, AddressingMode::AbsoluteY, "LDA"), INS(BIND(TSX_imp), 2, AddressingMode::Implied, "TSX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(LDY_absx), 4, AddressingMode::AbsoluteX, "LDY"), INS(BIND(LDA_absx), 4, AddressingMode::AbsoluteX, "LDA"), INS(BIND(LDX_absy), 4, AddressingMode::AbsoluteY, "LDX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* C */ INS(BIND(CPY_imm), 2, AddressingMode::Immediate, "CPY"), INS(BIND(CMP_xind), 6, AddressingMode::XIndexed, "CMP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CPY_zp), 3, AddressingMode::ZeroPage, "CPY"), INS(BIND(CMP_zp), 3, AddressingMode::ZeroPage, "CMP"), INS(BIND(DEC_zp), 5, AddressingMode::ZeroPage, "DEC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(INY_imp), 2, AddressingMode::Implied, "INY"), INS(BIND(CMP_imm),2, AddressingMode::Immediate, "CMP"), INS(BIND(DEX_imp), 2, AddressingMode::Implied, "DEX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CPY_abs), 4, AddressingMode::Absolute, "CPY"), INS(BIND(CMP_abs), 4, AddressingMode::Absolute, "CMP"), INS(BIND(DEC_abs), 6, AddressingMode::Absolute, "DEC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* D */ INS(BIND(BNE_rel), 2, AddressingMode::Relative, "BNE"), INS(BIND(CMP_indy), 5, AddressingMode::IndexedY, "CMP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CMP_zpx), 4, AddressingMode::ZeroPageX, "CMP"), INS(BIND(DEC_zpx), 6, AddressingMode::ZeroPageX, "DEC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CLD_imp), 2, AddressingMode::Implied, "CLD"), INS(BIND(CMP_absy), 4, AddressingMode::AbsoluteY, "CMP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CMP_absx), 4, AddressingMode::AbsoluteX, "CMP"), INS(BIND(DEC_absx), 7, AddressingMode::AbsoluteX, "DEC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* E */ INS(BIND(CPX_imm), 2, AddressingMode::Immediate, "CPX"), INS(BIND(SBC_xind), 6, AddressingMode::XIndexed, "SBC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CPX_zp), 3, AddressingMode::ZeroPage, "CPX"), INS(BIND(SBC_zp), 3, AddressingMode::ZeroPage, "SBC"), INS(BIND(INC_zp), 5, AddressingMode::ZeroPage, "INC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(INX_imp), 2, AddressingMode::Implied, "INX"), INS(BIND(SBC_imm),2, AddressingMode::Immediate, "SBC"), INS(BIND(NOP_imp), 2, AddressingMode::Implied, "NOP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CPX_abs), 4, AddressingMode::Absolute, "CPX"), INS(BIND(SBC_abs), 4, AddressingMode::Absolute, "SBC"), INS(BIND(INC_abs), 6, AddressingMode::Absolute, "INC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
/* F */ INS(BIND(BEQ_rel), 2, AddressingMode::Relative, "BEQ"), INS(BIND(SBC_indy), 5, AddressingMode::IndexedY, "SBC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SBC_zpx), 4, AddressingMode::ZeroPageX, "SBC"), INS(BIND(INC_zpx), 6, AddressingMode::ZeroPageX, "INC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SED_imp), 2, AddressingMode::Implied, "SED"), INS(BIND(SBC_absy), 4, AddressingMode::AbsoluteY, "SBC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SBC_absx), 4, AddressingMode::AbsoluteX, "SBC"), INS(BIND(INC_absx), 7, AddressingMode::AbsoluteX, "INC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"),
};
InstallInstructionSet(overlay6502);
}
void MOS6502::Install65sc02Instructions() {
if (level >= ProcessorType::Cpu65SC02) {
overlay65sc02 = {
//// 0 1 2 3 4 5 6 7 8 9 A B C D E F
/* 0 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TSB_zp), 5, AddressingMode::ZeroPage, "TSB"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TSB_abs), 6, AddressingMode::Absolute, "TSB"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 1 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ORA_zpind), 5, AddressingMode::ZeroPageIndirect, "ORA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TRB_zp), 5, AddressingMode::ZeroPage, "TRB"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(INC_a), 2, AddressingMode::Accumulator, "INC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(TRB_abs), 6, AddressingMode::Absolute, "TRB"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 2 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 3 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(AND_zpind), 5, AddressingMode::ZeroPageIndirect, "AND"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BIT_zpx), 4, AddressingMode::ZeroPageX, "BIT"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(DEC_a), 2, AddressingMode::Accumulator, "DEC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BIT_absx), 4, AddressingMode::AbsoluteX, "BIT"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 4 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 3, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 5 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(EOR_zpind), 5, AddressingMode::ZeroPageIndirect, "EOR"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 4, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(PHY_imp), 2, AddressingMode::Implied, "PHY"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP3_imp), 8, AddressingMode::Implied, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 6 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STZ_zp), 3, AddressingMode::ZeroPage, "STZ"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 7 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(ADC_zpind), 5, AddressingMode::ZeroPageIndirect, "ADC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STZ_zpx), 4, AddressingMode::ZeroPageX, "STZ"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(PLY_imp), 2, AddressingMode::Implied, "PLY"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(JMP_absxind), 6, AddressingMode::AbsoluteXIndirect, "JMP"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 8 */ INS(BIND(BRA_rel), 2, AddressingMode::Relative, "BRA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BIT_imm),2, AddressingMode::Immediate, "BIT"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* 9 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STA_zpind), 5, AddressingMode::ZeroPageIndirect, "STA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STZ_abs), 4, AddressingMode::Absolute, "STZ"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(STZ_absx), 2, AddressingMode::AbsoluteX, "STZ"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* A */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* B */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(LDA_zpind), 5, AddressingMode::ZeroPageIndirect, "LDA"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* C */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* D */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(CMP_zpind), 5, AddressingMode::ZeroPageIndirect, "CMP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 4, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(PHX_imp), 2, AddressingMode::Implied, "PHX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP3_imp), 4, AddressingMode::Implied, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* E */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 2, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
/* F */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SBC_zpind), 5, AddressingMode::ZeroPageIndirect, "SBC"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP2_imp), 4, AddressingMode::Implied, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(PLX_imp), 2, AddressingMode::Implied, "PLX"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(NOP3_imp), 4, AddressingMode::Implied, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"),
};
OverlayInstructionSet(overlay65sc02);
}
}
void MOS6502::Install65c02Instructions() {
if (level >= ProcessorType::Cpu65C02) {
overlay65c02 = {
//// 0 1 2 3 4 5 6 7 8 9 A B C D E F
/* 0 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB0_zp), 5, AddressingMode::ZeroPage, "RMB0"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR0_zprel), 5, AddressingMode::ZeroPageRelative, "BBR0"),
/* 1 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB1_zp), 5, AddressingMode::ZeroPage, "RMB1"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR1_zprel), 5, AddressingMode::ZeroPageRelative, "BBR1"),
/* 2 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB2_zp), 5, AddressingMode::ZeroPage, "RMB2"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR2_zprel), 5, AddressingMode::ZeroPageRelative, "BBR2"),
/* 3 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB3_zp), 5, AddressingMode::ZeroPage, "RMB3"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR3_zprel), 5, AddressingMode::ZeroPageRelative, "BBR3"),
/* 4 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB4_zp), 5, AddressingMode::ZeroPage, "RMB4"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR4_zprel), 5, AddressingMode::ZeroPageRelative, "BBR4"),
/* 5 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB5_zp), 5, AddressingMode::ZeroPage, "RMB5"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR5_zprel), 5, AddressingMode::ZeroPageRelative, "BBR5"),
/* 6 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB6_zp), 5, AddressingMode::ZeroPage, "RMB6"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR6_zprel), 5, AddressingMode::ZeroPageRelative, "BBR6"),
/* 7 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(RMB7_zp), 5, AddressingMode::ZeroPage, "RMB7"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBR7_zprel), 5, AddressingMode::ZeroPageRelative, "BBR7"),
/* 8 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB0_zp), 5, AddressingMode::ZeroPage, "SMB0"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS0_zprel), 5, AddressingMode::ZeroPageRelative, "BBS0"),
/* 9 */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB1_zp), 5, AddressingMode::ZeroPage, "SMB1"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(BBS1_zprel), 5, AddressingMode::ZeroPageRelative, "BBS1"),
/* A */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB2_zp), 5, AddressingMode::ZeroPage, "SMB2"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS2_zprel), 5, AddressingMode::ZeroPageRelative, "BBS2"),
/* B */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB3_zp), 5, AddressingMode::ZeroPage, "SMB3"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS3_zprel), 5, AddressingMode::ZeroPageRelative, "BBS3"),
/* C */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB4_zp), 5, AddressingMode::ZeroPage, "SMB4"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(WAI_imp), 3, AddressingMode::Implied, "WAI"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS4_zprel), 5, AddressingMode::ZeroPageRelative, "BBS4"),
/* D */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB5_zp), 5, AddressingMode::ZeroPage, "SMB5"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(STP_imp), 3, AddressingMode::Implied, "STP"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS5_zprel), 5, AddressingMode::ZeroPageRelative, "BBS5"),
/* E */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB6_zp), 5, AddressingMode::ZeroPage, "SMB6"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS6_zprel), 5, AddressingMode::ZeroPageRelative, "BBS6"),
/* F */ INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(SMB7_zp), 5, AddressingMode::ZeroPage, "SMB7"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 0, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(___), 2, AddressingMode::Illegal, "___"), INS(BIND(BBS7_zprel), 5, AddressingMode::ZeroPageRelative, "BBS7"),
};
OverlayInstructionSet(overlay65c02);
}
}
void MOS6502::InstallInstructionSet(std::array<Instruction, 0x100> basis) {
OverlayInstructionSet(basis, true);
}
void MOS6502::OverlayInstructionSet(std::array<Instruction, 0x100> overlay) {
OverlayInstructionSet(overlay, false);
}
void MOS6502::OverlayInstructionSet(std::array<Instruction, 0x100> overlay, bool includeIllegal) {
for (uint16_t i = 0; i < 0x100; ++i) {
auto newInstruction = overlay[i];
auto illegal = newInstruction.mode == AddressingMode::Illegal;
if (includeIllegal || !illegal) {
auto oldInstruction = instructions[i];
if (oldInstruction.mode != AddressingMode::Illegal) {
throw new std::domain_error("Whoops: replacing a non-missing instruction.");
}
instructions[i] = newInstruction;
}
}
}
////
bool MOS6502::UpdateZeroFlag(uint8_t datum) {
return p.zero = datum == 0;
}
bool MOS6502::UpdateNegativeFlag(int8_t datum) {
return p.negative = datum < 0;
}
void MOS6502::UpdateZeroNegativeFlags(uint8_t datum) {
if (UpdateNegativeFlag((int8_t)datum))
p.zero = false;
else
UpdateZeroFlag(datum);
}
////
void MOS6502::PushByte(uint8_t value) {
SetByte(PageOne + s--, value);
}
uint8_t MOS6502::PopByte() {
return GetByte(PageOne + ++s);
}
void MOS6502::PushWord(uint16_t value) {
PushByte(HighByte(value));
PushByte(LowByte(value));
}
uint16_t MOS6502::PopWord() {
auto low = PopByte();
auto high = PopByte();
return MakeWord(low, high);
}
uint8_t MOS6502::FetchByte() {
return GetByte(pc++);
}
uint16_t MOS6502::FetchWord() {
auto word = GetWord(pc);
pc += 2;
return word;
}
////
uint16_t MOS6502::Address_ZeroPage() {
return FetchByte();
}
uint16_t MOS6502::Address_ZeroPageX() {
return LowByte(FetchByte() + x);
}
uint16_t MOS6502::Address_ZeroPageY() {
return LowByte(FetchByte() + y);
}
uint16_t MOS6502::Address_IndexedIndirectX() {
return GetWord(Address_ZeroPageX());
}
uint16_t MOS6502::Address_IndexedIndirectY_Read() {
auto indirection = GetWord(FetchByte());
if (LowByte(indirection) == 0xff)
++cycles;
return indirection + y;
}
uint16_t MOS6502::Address_IndexedIndirectY_Write() {
return GetWord(FetchByte()) + y;
}
uint16_t MOS6502::Address_Absolute() {
return FetchWord();
}
uint16_t MOS6502::Address_AbsoluteXIndirect() {
return GetWord(FetchWord() + x);
}
uint16_t MOS6502::Address_AbsoluteX_Read() {
auto address = FetchWord();
auto offset = (uint16_t)(address + x);
if (LowByte(offset) == 0xff)
++cycles;
return offset;
}
uint16_t MOS6502::Address_AbsoluteX_Write() {
return FetchWord() + x;
}
uint16_t MOS6502::Address_AbsoluteY_Read() {
auto address = FetchWord();
auto offset = (uint16_t)(address + y);
if (LowByte(offset) == 0xff)
++cycles;
return offset;
}
uint16_t MOS6502::Address_AbsoluteY_Write() {
return FetchWord() + y;
}
uint16_t MOS6502::Address_ZeroPageIndirect() {
return GetWord(FetchByte());
}
////
uint8_t MOS6502::ReadByte_Immediate() {
return FetchByte();
}
int8_t MOS6502::ReadByte_ImmediateDisplacement() {
return FetchByte();
}
uint8_t MOS6502::ReadByte_ZeroPage() {
return GetByte(Address_ZeroPage());
}
uint8_t MOS6502::ReadByte_ZeroPageX() {
return GetByte(Address_ZeroPageX());
}
uint8_t MOS6502::ReadByte_ZeroPageY() {
return GetByte(Address_ZeroPageY());
}
uint8_t MOS6502::ReadByte_Absolute() {
return GetByte(Address_Absolute());
}
uint8_t MOS6502::ReadByte_AbsoluteX() {
return GetByte(Address_AbsoluteX_Read());
}
uint8_t MOS6502::ReadByte_AbsoluteY() {
return GetByte(Address_AbsoluteY_Read());
}
uint8_t MOS6502::ReadByte_IndexedIndirectX() {
return GetByte(Address_IndexedIndirectX());
}
uint8_t MOS6502::ReadByte_IndirectIndexedY() {
return GetByte(Address_IndexedIndirectY_Read());
}
uint8_t MOS6502::ReadByte_ZeroPageIndirect() {
return GetByte(Address_ZeroPageIndirect());
}
////
void MOS6502::WriteByte_ZeroPage(uint8_t value) {
SetByte(Address_ZeroPage(), value);
}
void MOS6502::WriteByte_Absolute(uint8_t value) {
SetByte(Address_Absolute(), value);
}
void MOS6502::WriteByte_AbsoluteX(uint8_t value) {
SetByte(Address_AbsoluteX_Write(), value);
}
void MOS6502::WriteByte_AbsoluteY(uint8_t value) {
SetByte(Address_AbsoluteY_Write(), value);
}
void MOS6502::WriteByte_ZeroPageX(uint8_t value) {
SetByte(Address_ZeroPageX(), value);
}
void MOS6502::WriteByte_ZeroPageY(uint8_t value) {
SetByte(Address_ZeroPageY(), value);
}
void MOS6502::WriteByte_IndirectIndexedY(uint8_t value) {
SetByte(Address_IndexedIndirectY_Write(), value);
}
void MOS6502::WriteByte_IndexedIndirectX(uint8_t value) {
SetByte(Address_IndexedIndirectX(), value);
}
void MOS6502::WriteByte_ZeroPageIndirect(uint8_t value) {
SetByte(Address_ZeroPageIndirect(), value);
}
////
void MOS6502::DEC(uint16_t offset) {
auto content = GetByte(offset);
SetByte(offset, --content);
UpdateZeroNegativeFlags(content);
}
uint8_t MOS6502::ROR(uint8_t data) {
auto carry = p.carry;
p.carry = (data & 1) != 0;
auto result = (uint8_t)(data >> 1);
if (carry)
result |= 0x80;
UpdateZeroNegativeFlags(result);
return result;
}
void MOS6502::ROR(uint16_t offset) {
SetByte(offset, ROR(GetByte(offset)));
}
uint8_t MOS6502::LSR(uint8_t data) {
p.carry = (data & 1) != 0;
auto result = (uint8_t)(data >> 1);
UpdateZeroNegativeFlags(result);
return result;
}
void MOS6502::LSR(uint16_t offset) {
SetByte(offset, LSR(GetByte(offset)));
}
void MOS6502::BIT_immediate(uint8_t data) {
auto result = (uint8_t)(a & data);
UpdateZeroFlag(result);
}
void MOS6502::BIT(uint8_t data) {
BIT_immediate(data);
p.negative = (data & 0x80) != 0;
p.overflow = (data & 0x40) != 0;
}
void MOS6502::TSB(uint16_t address) {
auto content = GetByte(address);
BIT_immediate(content);
uint8_t result = content | a;
SetByte(address, result);
}
void MOS6502::TRB(uint16_t address) {
auto content = GetByte(address);
BIT_immediate(content);
uint8_t result = content & ~a;
SetByte(address, result);
}
void MOS6502::INC(uint16_t offset) {
auto content = GetByte(offset);
SetByte(offset, ++content);
UpdateZeroNegativeFlags(content);
}
void MOS6502::ROL(uint16_t offset) {
SetByte(offset, ROL(GetByte(offset)));
}
uint8_t MOS6502::ROL(uint8_t data) {
auto carry = p.carry;
p.carry = (data & 0x80) != 0;
uint8_t result = data << 1;
if (carry)
result |= 1;
UpdateZeroNegativeFlags(result);
return result;
}
void MOS6502::ASL(uint16_t offset) {
SetByte(offset, ASL(GetByte(offset)));
}
uint8_t MOS6502::ASL(uint8_t data) {
uint8_t result = data << 1;
UpdateZeroNegativeFlags(result);
p.carry = (data & 0x80) != 0;
return result;
}
void MOS6502::ORA(uint8_t data) {
a |= data;
UpdateZeroNegativeFlags(a);
}
void MOS6502::AND(uint8_t data) {
a &= data;
UpdateZeroNegativeFlags(a);
}
void MOS6502::SBC(uint8_t data) {
if (p.decimal)
SBC_d(data);
else
SBC_b(data);
}
void MOS6502::SBC_b(uint8_t data) {
auto carry = p.carry ? 0 : 1;
auto difference = a - data - carry;
UpdateZeroNegativeFlags((uint8_t)difference);
p.overflow = ((a ^ data) & (a ^ difference) & 0x80) != 0;
p.carry = HighByte((uint16_t)difference) == 0;
a = (uint8_t)difference;
}
void MOS6502::SBC_d(uint8_t data) {
auto carry = p.carry ? 0 : 1;
auto difference = a - data - carry;
if (level < ProcessorType::Cpu65SC02)
UpdateZeroNegativeFlags((uint8_t)difference);
p.overflow = ((a ^ data) & (a ^ difference) & 0x80) != 0;
p.carry = HighByte((uint16_t)difference) == 0;
auto low = (uint8_t)(LowNybble(a) - LowNybble(data) - carry);
auto lowNegative = (int8_t)low < 0;
if (lowNegative)
low -= 6;
uint8_t high = HighNybble(a) - HighNybble(data) - (lowNegative ? 1 : 0);
if ((int8_t)high < 0)
high -= 6;
a = PromoteNybble(high) | LowNybble(low);
if (level >= ProcessorType::Cpu65SC02)
UpdateZeroNegativeFlags(a);
}
void MOS6502::EOR(uint8_t data) {
a ^= data;
UpdateZeroNegativeFlags(a);
}
void MOS6502::CPX(uint8_t data) {
CMP(x, data);
}
void MOS6502::CPY(uint8_t data) {
CMP(y, data);
}
void MOS6502::CMP(uint8_t data) {
CMP(a, data);
}
void MOS6502::CMP(uint8_t first, uint8_t second) {
uint16_t result = first - second;
UpdateZeroNegativeFlags((uint8_t)result);
p.carry = HighByte(result) == 0;
}
void MOS6502::LDA(uint8_t data) {
a = data;
UpdateZeroNegativeFlags(a);
}
void MOS6502::LDY(uint8_t data) {
y = data;
UpdateZeroNegativeFlags(y);
}
void MOS6502::LDX(uint8_t data) {
x = data;
UpdateZeroNegativeFlags(x);
}
void MOS6502::ADC(uint8_t data) {
if (p.decimal)
ADC_d(data);
else
ADC_b(data);
}
void MOS6502::ADC_b(uint8_t data) {
auto carry = (uint8_t)(p.carry ? 1 : 0);
auto sum = (uint16_t)(a + data + carry);
UpdateZeroNegativeFlags((uint8_t)sum);
p.overflow = (~(a ^ data) & (a ^ sum) & 0x80) != 0;
p.carry = HighByte(sum) != 0;
a = (uint8_t)sum;
}
void MOS6502::ADC_d(uint8_t data) {
auto carry = (uint8_t)(p.carry ? 1 : 0);
auto sum = (uint16_t)(a + data + carry);
if (level < ProcessorType::Cpu65SC02)
UpdateZeroNegativeFlags((uint8_t)sum);
auto low = (uint8_t)(LowNybble(a) + LowNybble(data) + carry);
if (low > 9)
low += 6;
auto high = (uint8_t)(HighNybble(a) + HighNybble(data) + (low > 0xf ? 1 : 0));
p.overflow = (~(a ^ data) & (a ^ PromoteNybble(high)) & 0x80) != 0;
if (high > 9)
high += 6;
p.carry = high > 0xf;
a = (uint8_t)(PromoteNybble(high) | LowNybble(low));
if (level >= ProcessorType::Cpu65SC02)
UpdateZeroNegativeFlags(a);
}
////
void MOS6502::RMB(uint16_t address, uint8_t flag) {
auto data = GetByte(address);
data &= (uint8_t)~flag;
SetByte(address, data);
}
void MOS6502::SMB(uint16_t address, uint8_t flag) {
auto data = GetByte(address);
data |= flag;
SetByte(address, data);
}
////
void MOS6502::Branch(int8_t displacement) {
++cycles;
auto oldPage = HighByte(pc);
pc += (uint16_t)((short)displacement);
auto newPage = HighByte(pc);
if (oldPage != newPage)
cycles += 2;
}
void MOS6502::Branch() {
auto displacement = ReadByte_ImmediateDisplacement();
Branch(displacement);
}
void MOS6502::Branch(bool flag) {
auto displacement = ReadByte_ImmediateDisplacement();
if (flag)
Branch(displacement);
}
void MOS6502::BitBranch_Clear(uint8_t check) {
auto zp = FetchByte();
auto contents = GetByte(zp);
auto displacement = FetchByte();
if ((contents & check) == 0)
pc += (uint16_t)displacement;
}
void MOS6502::BitBranch_Set(uint8_t check) {
auto zp = FetchByte();
auto contents = GetByte(zp);
auto displacement = FetchByte();
if ((contents & check) != 0)
pc += (uint16_t)displacement;
}
//
void MOS6502::NOP_imp() {
}
void MOS6502::NOP2_imp() {
FetchByte();
}
void MOS6502::NOP3_imp() {
FetchWord();
}
//
void MOS6502::ORA_xind() {
ORA(ReadByte_IndexedIndirectX());
}
void MOS6502::ORA_zp() {
ORA(ReadByte_ZeroPage());
}
void MOS6502::ORA_imm() {
ORA(ReadByte_Immediate());
}
void MOS6502::ORA_abs() {
ORA(ReadByte_Absolute());
}
void MOS6502::ORA_absx() {
ORA(ReadByte_AbsoluteX());
}
void MOS6502::ORA_absy() {
ORA(ReadByte_AbsoluteY());
}
void MOS6502::ORA_zpx() {
ORA(ReadByte_ZeroPageX());
}
void MOS6502::ORA_indy() {
ORA(ReadByte_IndirectIndexedY());
}
void MOS6502::ORA_zpind() {
ORA(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::AND_zpx() {
AND(ReadByte_ZeroPageX());
}
void MOS6502::AND_indy() {
AND(ReadByte_IndirectIndexedY());
}
void MOS6502::AND_zp() {
AND(ReadByte_ZeroPage());
}
void MOS6502::AND_absx() {
AND(ReadByte_AbsoluteX());
}
void MOS6502::AND_absy() {
AND(ReadByte_AbsoluteY());
}
void MOS6502::AND_imm() {
AND(ReadByte_Immediate());
}
void MOS6502::AND_xind() {
AND(ReadByte_IndexedIndirectX());
}
void MOS6502::AND_abs() {
AND(ReadByte_Absolute());
}
void MOS6502::AND_zpind() {
AND(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::EOR_absx() {
EOR(ReadByte_AbsoluteX());
}
void MOS6502::EOR_absy() {
EOR(ReadByte_AbsoluteY());
}
void MOS6502::EOR_zpx() {
EOR(ReadByte_ZeroPageX());
}
void MOS6502::EOR_indy() {
EOR(ReadByte_IndirectIndexedY());
}
void MOS6502::EOR_abs() {
EOR(ReadByte_Absolute());
}
void MOS6502::EOR_imm() {
EOR(ReadByte_Immediate());
}
void MOS6502::EOR_zp() {
EOR(ReadByte_ZeroPage());
}
void MOS6502::EOR_xind() {
EOR(ReadByte_IndexedIndirectX());
}
void MOS6502::EOR_zpind() {
EOR(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::LDA_absx() {
LDA(ReadByte_AbsoluteX());
}
void MOS6502::LDA_absy() {
LDA(ReadByte_AbsoluteY());
}
void MOS6502::LDA_zpx() {
LDA(ReadByte_ZeroPageX());
}
void MOS6502::LDA_indy() {
LDA(ReadByte_IndirectIndexedY());
}
void MOS6502::LDA_abs() {
LDA(ReadByte_Absolute());
}
void MOS6502::LDA_imm() {
LDA(ReadByte_Immediate());
}
void MOS6502::LDA_zp() {
LDA(ReadByte_ZeroPage());
}
void MOS6502::LDA_xind() {
LDA(ReadByte_IndexedIndirectX());
}
void MOS6502::LDA_zpind() {
LDA(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::LDX_imm() {
LDX(ReadByte_Immediate());
}
void MOS6502::LDX_zp() {
LDX(ReadByte_ZeroPage());
}
void MOS6502::LDX_abs() {
LDX(ReadByte_Absolute());
}
void MOS6502::LDX_zpy() {
LDX(ReadByte_ZeroPageY());
}
void MOS6502::LDX_absy() {
LDX(ReadByte_AbsoluteY());
}
//
void MOS6502::LDY_imm() {
LDY(ReadByte_Immediate());
}
void MOS6502::LDY_zp() {
LDY(ReadByte_ZeroPage());
}
void MOS6502::LDY_abs() {
LDY(ReadByte_Absolute());
}
void MOS6502::LDY_zpx() {
LDY(ReadByte_ZeroPageX());
}
void MOS6502::LDY_absx() {
LDY(ReadByte_AbsoluteX());
}
//
void MOS6502::CMP_absx() {
CMP(ReadByte_AbsoluteX());
}
void MOS6502::CMP_absy() {
CMP(ReadByte_AbsoluteY());
}
void MOS6502::CMP_zpx() {
CMP(ReadByte_ZeroPageX());
}
void MOS6502::CMP_indy() {
CMP(ReadByte_IndirectIndexedY());
}
void MOS6502::CMP_abs() {
CMP(ReadByte_Absolute());
}
void MOS6502::CMP_imm() {
CMP(ReadByte_Immediate());
}
void MOS6502::CMP_zp() {
CMP(ReadByte_ZeroPage());
}
void MOS6502::CMP_xind() {
CMP(ReadByte_IndexedIndirectX());
}
void MOS6502::CMP_zpind() {
CMP(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::CPX_abs() {
CPX(ReadByte_Absolute());
}
void MOS6502::CPX_zp() {
CPX(ReadByte_ZeroPage());
}
void MOS6502::CPX_imm() {
CPX(ReadByte_Immediate());
}
//
void MOS6502::CPY_imm() {
CPY(ReadByte_Immediate());
}
void MOS6502::CPY_zp() {
CPY(ReadByte_ZeroPage());
}
void MOS6502::CPY_abs() {
CPY(ReadByte_Absolute());
}
//
void MOS6502::ADC_zp() {
ADC(ReadByte_ZeroPage());
}
void MOS6502::ADC_xind() {
ADC(ReadByte_IndexedIndirectX());
}
void MOS6502::ADC_imm() {
ADC(ReadByte_Immediate());
}
void MOS6502::ADC_abs() {
ADC(ReadByte_Absolute());
}
void MOS6502::ADC_zpx() {
ADC(ReadByte_ZeroPageX());
}
void MOS6502::ADC_indy() {
ADC(ReadByte_IndirectIndexedY());
}
void MOS6502::ADC_absx() {
ADC(ReadByte_AbsoluteX());
}
void MOS6502::ADC_absy() {
ADC(ReadByte_AbsoluteY());
}
void MOS6502::ADC_zpind() {
ADC(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::SBC_xind() {
SBC(ReadByte_IndexedIndirectX());
}
void MOS6502::SBC_zp() {
SBC(ReadByte_ZeroPage());
}
void MOS6502::SBC_imm() {
SBC(ReadByte_Immediate());
}
void MOS6502::SBC_abs() {
SBC(ReadByte_Absolute());
}
void MOS6502::SBC_zpx() {
SBC(ReadByte_ZeroPageX());
}
void MOS6502::SBC_indy() {
SBC(ReadByte_IndirectIndexedY());
}
void MOS6502::SBC_absx() {
SBC(ReadByte_AbsoluteX());
}
void MOS6502::SBC_absy() {
SBC(ReadByte_AbsoluteY());
}
void MOS6502::SBC_zpind() {
SBC(ReadByte_ZeroPageIndirect());
}
//
void MOS6502::BIT_imm() {
BIT_immediate(ReadByte_Immediate());
}
void MOS6502::BIT_zp() {
BIT(ReadByte_ZeroPage());
}
void MOS6502::BIT_zpx() {
BIT(ReadByte_ZeroPageX());
}
void MOS6502::BIT_abs() {
BIT(ReadByte_Absolute());
}
void MOS6502::BIT_absx() {
BIT(ReadByte_AbsoluteX());
}
//
void MOS6502::DEC_a() {
UpdateZeroNegativeFlags(--a);
}
void MOS6502::DEC_absx() {
DEC(Address_AbsoluteX_Write());
}
void MOS6502::DEC_zpx() {
DEC(Address_ZeroPageX());
}
void MOS6502::DEC_abs() {
DEC(Address_Absolute());
}
void MOS6502::DEC_zp() {
DEC(Address_ZeroPage());
}
//
void MOS6502::DEX_imp() {
UpdateZeroNegativeFlags(--x);
}
void MOS6502::DEY_imp() {
UpdateZeroNegativeFlags(--y);
}
//
void MOS6502::INC_a() {
UpdateZeroNegativeFlags(++a);
}
void MOS6502::INC_zp() {
INC(Address_ZeroPage());
}
void MOS6502::INC_absx() {
INC(Address_AbsoluteX_Write());
}
void MOS6502::INC_zpx() {
INC(Address_ZeroPageX());
}
void MOS6502::INC_abs() {
INC(Address_Absolute());
}
//
void MOS6502::INX_imp() {
UpdateZeroNegativeFlags(++x);
}
void MOS6502::INY_imp() {
UpdateZeroNegativeFlags(++y);
}
//
void MOS6502::STX_zpy() {
WriteByte_ZeroPageY(x);
}
void MOS6502::STX_abs() {
WriteByte_Absolute(x);
}
void MOS6502::STX_zp() {
WriteByte_ZeroPage(x);
}
//
void MOS6502::STY_zpx() {
WriteByte_ZeroPageX(y);
}
void MOS6502::STY_abs() {
WriteByte_Absolute(y);
}
void MOS6502::STY_zp() {
WriteByte_ZeroPage(y);
}
//
void MOS6502::STA_absx() {
WriteByte_AbsoluteX(a);
}
void MOS6502::STA_absy() {
WriteByte_AbsoluteY(a);
}
void MOS6502::STA_zpx() {
WriteByte_ZeroPageX(a);
}
void MOS6502::STA_indy() {
WriteByte_IndirectIndexedY(a);
}
void MOS6502::STA_abs() {
WriteByte_Absolute(a);
}
void MOS6502::STA_zp() {
WriteByte_ZeroPage(a);
}
void MOS6502::STA_xind() {
WriteByte_IndexedIndirectX(a);
}
void MOS6502::STA_zpind() {
WriteByte_ZeroPageIndirect(a);
}
//
void MOS6502::STZ_zp() {
WriteByte_ZeroPage((uint8_t)0);
}
void MOS6502::STZ_zpx() {
WriteByte_ZeroPageX((uint8_t)0);
}
void MOS6502::STZ_abs() {
WriteByte_Absolute((uint8_t)0);
}
void MOS6502::STZ_absx() {
WriteByte_AbsoluteX((uint8_t)0);
}
//
void MOS6502::TSX_imp() {
x = s;
UpdateZeroNegativeFlags(x);
}
void MOS6502::TAX_imp() {
x = a;
UpdateZeroNegativeFlags(x);
}
void MOS6502::TAY_imp() {
y = a;
UpdateZeroNegativeFlags(y);
}
void MOS6502::TXS_imp() {
s = x;
}
void MOS6502::TYA_imp() {
a = y;
UpdateZeroNegativeFlags(a);
}
void MOS6502::TXA_imp() {
a = x;
UpdateZeroNegativeFlags(a);
}
//
void MOS6502::PHP_imp() {
p.brk = true;
PushByte(p);
}
void MOS6502::PLP_imp() {
p = PopByte();
p.reserved = true;
}
void MOS6502::PLA_imp() {
a = PopByte();
UpdateZeroNegativeFlags(a);
}
void MOS6502::PHA_imp() {
PushByte(a);
}
void MOS6502::PHX_imp() {
PushByte(x);
}
void MOS6502::PHY_imp() {
PushByte(y);
}
void MOS6502::PLX_imp() {
x = PopByte();
UpdateZeroNegativeFlags(x);
}
void MOS6502::PLY_imp() {
y = PopByte();
UpdateZeroNegativeFlags(y);
}
//
void MOS6502::ASL_a() {
a = ASL(a);
}
void MOS6502::ASL_zp() {
ASL(Address_ZeroPage());
}
void MOS6502::ASL_abs() {
ASL(Address_Absolute());
}
void MOS6502::ASL_absx() {
ASL(Address_AbsoluteX_Write());
}
void MOS6502::ASL_zpx() {
ASL(Address_ZeroPageX());
}
//
void MOS6502::LSR_absx() {
LSR(Address_AbsoluteX_Write());
}
void MOS6502::LSR_zpx() {
LSR(Address_ZeroPageX());
}
void MOS6502::LSR_abs() {
LSR(Address_Absolute());
}
void MOS6502::LSR_a() {
a = LSR(a);
}
void MOS6502::LSR_zp() {
LSR(Address_ZeroPage());
}
//
void MOS6502::ROL_absx() {
ROL(Address_AbsoluteX_Write());
}
void MOS6502::ROL_zpx() {
ROL(Address_ZeroPageX());
}
void MOS6502::ROL_abs() {
ROL(Address_Absolute());
}
void MOS6502::ROL_a() {
a = ROL(a);
}
void MOS6502::ROL_zp() {
ROL(Address_ZeroPage());
}
//
void MOS6502::ROR_absx() {
ROR(Address_AbsoluteX_Write());
}
void MOS6502::ROR_zpx() {
ROR(Address_ZeroPageX());
}
void MOS6502::ROR_abs() {
ROR(Address_Absolute());
}
void MOS6502::ROR_a() {
a = ROR(a);
}
void MOS6502::ROR_zp() {
ROR(Address_ZeroPage());
}
//
void MOS6502::TSB_zp() {
TSB(Address_ZeroPage());
}
void MOS6502::TSB_abs() {
TSB(Address_Absolute());
}
//
void MOS6502::TRB_zp() {
TRB(Address_ZeroPage());
}
void MOS6502::TRB_abs() {
TRB(Address_Absolute());
}
//
void MOS6502::RMB0_zp() {
RMB(Address_ZeroPage(), 1);
}
void MOS6502::RMB1_zp() {
RMB(Address_ZeroPage(), 2);
}
void MOS6502::RMB2_zp() {
RMB(Address_ZeroPage(), 4);
}
void MOS6502::RMB3_zp() {
RMB(Address_ZeroPage(), 8);
}
void MOS6502::RMB4_zp() {
RMB(Address_ZeroPage(), 0x10);
}
void MOS6502::RMB5_zp() {
RMB(Address_ZeroPage(), 0x20);
}
void MOS6502::RMB6_zp() {
RMB(Address_ZeroPage(), 0x40);
}
void MOS6502::RMB7_zp() {
RMB(Address_ZeroPage(), 0x80);
}
//
void MOS6502::SMB0_zp() {
SMB(Address_ZeroPage(), 1);
}
void MOS6502::SMB1_zp() {
SMB(Address_ZeroPage(), 2);
}
void MOS6502::SMB2_zp() {
SMB(Address_ZeroPage(), 4);
}
void MOS6502::SMB3_zp() {
SMB(Address_ZeroPage(), 8);
}
void MOS6502::SMB4_zp() {
SMB(Address_ZeroPage(), 0x10);
}
void MOS6502::SMB5_zp() {
SMB(Address_ZeroPage(), 0x20);
}
void MOS6502::SMB6_zp() {
SMB(Address_ZeroPage(), 0x40);
}
void MOS6502::SMB7_zp() {
SMB(Address_ZeroPage(), 0x80);
}
//
void MOS6502::JSR_abs() {
auto destination = Address_Absolute();
PushWord((uint16_t)(pc - 1));
pc = destination;
}
void MOS6502::RTI_imp() {
PLP_imp();
pc = PopWord();
}
void MOS6502::RTS_imp() {
pc = (uint16_t)(PopWord() + 1);
}
void MOS6502::JMP_abs() {
pc = Address_Absolute();
}
void MOS6502::JMP_ind() {
pc = GetWord(Address_Absolute());
}
void MOS6502::JMP_absxind() {
pc = Address_AbsoluteXIndirect();
}
void MOS6502::BRK_imp() {
PushWord((uint16_t)(pc + 1));
PHP_imp();
p.interrupt = true;
if (level >= ProcessorType::Cpu65SC02)
p.decimal = false;
pc = GetWord(IRQvector);
}
//
void MOS6502::WAI_imp() {
throw std::runtime_error("Not implemented");
}
void MOS6502::STP_imp() {
throw std::runtime_error("Not implemented");
}
//
void MOS6502::SED_imp() {
p.decimal = true;
}
void MOS6502::CLD_imp() {
p.decimal = false;
}
void MOS6502::CLV_imp() {
p.overflow = false;
}
void MOS6502::SEI_imp() {
p.interrupt = true;
}
void MOS6502::CLI_imp() {
p.interrupt = false;
}
void MOS6502::CLC_imp() {
p.carry = false;
}
void MOS6502::SEC_imp() {
p.carry = true;
}
//
void MOS6502::BMI_rel() {
Branch(p.negative);
}
void MOS6502::BPL_rel() {
Branch(!p.negative);
}
void MOS6502::BVC_rel() {
Branch(!p.overflow);
}
void MOS6502::BVS_rel() {
Branch(p.overflow);
}
void MOS6502::BCC_rel() {
Branch(!p.carry);
}
void MOS6502::BCS_rel() {
Branch(p.carry);
}
void MOS6502::BNE_rel() {
Branch(!p.zero);
}
void MOS6502::BEQ_rel() {
Branch(p.zero);
}
void MOS6502::BRA_rel() {
Branch();
}
//
void MOS6502::BBR0_zprel() {
BitBranch_Clear(0x1);
}
void MOS6502::BBR1_zprel() {
BitBranch_Clear(0x2);
}
void MOS6502::BBR2_zprel() {
BitBranch_Clear(0x4);
}
void MOS6502::BBR3_zprel() {
BitBranch_Clear(0x8);
}
void MOS6502::BBR4_zprel() {
BitBranch_Clear(0x10);
}
void MOS6502::BBR5_zprel() {
BitBranch_Clear(0x20);
}
void MOS6502::BBR6_zprel() {
BitBranch_Clear(0x40);
}
void MOS6502::BBR7_zprel() {
BitBranch_Clear(0x80);
}
void MOS6502::BBS0_zprel() {
BitBranch_Set(0x1);
}
void MOS6502::BBS1_zprel() {
BitBranch_Set(0x2);
}
void MOS6502::BBS2_zprel() {
BitBranch_Set(0x4);
}
void MOS6502::BBS3_zprel() {
BitBranch_Set(0x8);
}
void MOS6502::BBS4_zprel() {
BitBranch_Set(0x10);
}
void MOS6502::BBS5_zprel() {
BitBranch_Set(0x20);
}
void MOS6502::BBS6_zprel() {
BitBranch_Set(0x40);
}
void MOS6502::BBS7_zprel() {
BitBranch_Set(0x80);
}
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