379 lines
No EOL
7.7 KiB
C++
379 lines
No EOL
7.7 KiB
C++
#if (defined(DUMMYCPU) && !defined(__DUMMYCPU__H)) || (!defined(DUMMYCPU) && !defined(__CPU__H))
|
|
#ifdef DUMMYCPU
|
|
#define __DUMMYCPU__H
|
|
#else
|
|
#define __CPU__H
|
|
#endif
|
|
|
|
#include "stdafx.h"
|
|
#include "CpuTypes.h"
|
|
#include "../Utilities/ISerializable.h"
|
|
|
|
class MemoryMappings;
|
|
class MemoryManager;
|
|
class DmaController;
|
|
class Console;
|
|
|
|
class Cpu : public ISerializable
|
|
{
|
|
private:
|
|
static constexpr uint32_t NmiVector = 0x00FFEA;
|
|
static constexpr uint32_t ResetVector = 0x00FFFC;
|
|
static constexpr uint32_t IrqVector = 0x00FFEE;
|
|
static constexpr uint32_t AbortVector = 0x00FFE8;
|
|
static constexpr uint32_t BreakVector = 0x00FFE6;
|
|
static constexpr uint32_t CoprocessorVector = 0x00FFE4;
|
|
|
|
static constexpr uint16_t LegacyNmiVector = 0xFFFA;
|
|
static constexpr uint32_t LegacyIrqVector = 0xFFFE;
|
|
static constexpr uint32_t LegacyCoprocessorVector = 0x00FFF4;
|
|
|
|
typedef void(Cpu::*Func)();
|
|
|
|
MemoryManager *_memoryManager = nullptr;
|
|
DmaController *_dmaController = nullptr;
|
|
Console *_console = nullptr;
|
|
|
|
bool _immediateMode = false;
|
|
|
|
CpuState _state = {};
|
|
uint32_t _operand = -1;
|
|
|
|
uint32_t GetProgramAddress(uint16_t addr);
|
|
uint32_t GetDataAddress(uint16_t addr);
|
|
|
|
uint16_t GetDirectAddress(uint16_t offset, bool allowEmulationMode = true);
|
|
|
|
uint16_t GetDirectAddressIndirectWord(uint16_t offset, bool allowEmulationMode = true);
|
|
uint32_t GetDirectAddressIndirectLong(uint16_t offset, bool allowEmulationMode = true);
|
|
|
|
uint8_t GetOpCode();
|
|
|
|
uint16_t GetResetVector();
|
|
|
|
void UpdateIrqNmiFlags();
|
|
void ProcessCpuCycle();
|
|
|
|
void Idle();
|
|
void IdleOrRead();
|
|
void IdleEndJump();
|
|
void IdleTakeBranch();
|
|
|
|
uint8_t ReadOperandByte();
|
|
uint16_t ReadOperandWord();
|
|
uint32_t ReadOperandLong();
|
|
|
|
uint16_t ReadVector(uint16_t vector);
|
|
|
|
uint8_t Read(uint32_t addr, MemoryOperationType type);
|
|
|
|
void SetSP(uint16_t sp);
|
|
void SetPS(uint8_t ps);
|
|
|
|
void SetRegister(uint8_t ®, uint8_t value);
|
|
void SetRegister(uint16_t ®, uint16_t value, bool eightBitMode);
|
|
|
|
void SetZeroNegativeFlags(uint16_t value);
|
|
void SetZeroNegativeFlags(uint8_t value);
|
|
|
|
void ClearFlags(uint8_t flags);
|
|
void SetFlags(uint8_t flags);
|
|
bool CheckFlag(uint8_t flag);
|
|
|
|
uint8_t ReadCode(uint16_t addr, MemoryOperationType type = MemoryOperationType::Read);
|
|
uint16_t ReadCodeWord(uint16_t addr, MemoryOperationType type = MemoryOperationType::Read);
|
|
|
|
uint8_t ReadData(uint32_t addr, MemoryOperationType type = MemoryOperationType::Read);
|
|
uint16_t ReadDataWord(uint32_t addr, MemoryOperationType type = MemoryOperationType::Read);
|
|
uint32_t ReadDataLong(uint32_t addr, MemoryOperationType type = MemoryOperationType::Read);
|
|
|
|
void Write(uint32_t addr, uint8_t value, MemoryOperationType type = MemoryOperationType::Write);
|
|
void WriteWord(uint32_t addr, uint16_t value, MemoryOperationType type = MemoryOperationType::Write);
|
|
|
|
uint8_t GetByteValue();
|
|
|
|
uint16_t GetWordValue();
|
|
|
|
void PushByte(uint8_t value);
|
|
uint8_t PopByte();
|
|
|
|
void PushWord(uint16_t value);
|
|
uint16_t PopWord();
|
|
|
|
//Add/substract instructions
|
|
void Add8(uint8_t value);
|
|
void Add16(uint16_t value);
|
|
void ADC();
|
|
|
|
void Sub8(uint8_t value);
|
|
void Sub16(uint16_t value);
|
|
void SBC();
|
|
|
|
//Branch instructions
|
|
void BCC();
|
|
void BCS();
|
|
void BEQ();
|
|
void BMI();
|
|
void BNE();
|
|
void BPL();
|
|
void BRA();
|
|
void BRL();
|
|
void BVC();
|
|
void BVS();
|
|
void BranchRelative(bool branch);
|
|
|
|
//Set/clear flag instructions
|
|
void CLC();
|
|
void CLD();
|
|
void CLI();
|
|
void CLV();
|
|
void SEC();
|
|
void SED();
|
|
void SEI();
|
|
|
|
void REP();
|
|
void SEP();
|
|
|
|
//Increment/decrement instructions
|
|
void DEX();
|
|
void DEY();
|
|
void INX();
|
|
void INY();
|
|
void DEC();
|
|
void INC();
|
|
|
|
void DEC_Acc();
|
|
void INC_Acc();
|
|
|
|
void IncDecReg(uint16_t & reg, int8_t offset);
|
|
void IncDec(int8_t offset);
|
|
|
|
//Compare instructions
|
|
void Compare(uint16_t reg, bool eightBitMode);
|
|
void CMP();
|
|
void CPX();
|
|
void CPY();
|
|
|
|
//Jump instructions
|
|
void JML();
|
|
void JMP();
|
|
void JSL();
|
|
void JSR();
|
|
void RTI();
|
|
void RTL();
|
|
void RTS();
|
|
|
|
//Interrupts
|
|
void ProcessInterrupt(uint16_t vector, bool forHardwareInterrupt);
|
|
void BRK();
|
|
void COP();
|
|
|
|
//Bitwise operations
|
|
void AND();
|
|
void EOR();
|
|
void ORA();
|
|
|
|
template<typename T> T ShiftLeft(T value);
|
|
template<typename T> T RollLeft(T value);
|
|
template<typename T> T ShiftRight(T value);
|
|
template<typename T> T RollRight(T value);
|
|
|
|
//Shift operations
|
|
void ASL_Acc();
|
|
void ASL();
|
|
void LSR_Acc();
|
|
void LSR();
|
|
void ROL_Acc();
|
|
void ROL();
|
|
void ROR_Acc();
|
|
void ROR();
|
|
|
|
//Move operations
|
|
void MVN();
|
|
void MVP();
|
|
|
|
//Push/pull instructions
|
|
void PEA();
|
|
void PEI();
|
|
void PER();
|
|
void PHB();
|
|
void PHD();
|
|
void PHK();
|
|
void PHP();
|
|
void PLB();
|
|
void PLD();
|
|
void PLP();
|
|
|
|
void PHA();
|
|
void PHX();
|
|
void PHY();
|
|
void PLA();
|
|
void PLX();
|
|
void PLY();
|
|
|
|
void PushRegister(uint16_t reg, bool eightBitMode);
|
|
void PullRegister(uint16_t ®, bool eightBitMode);
|
|
|
|
//Store/load instructions
|
|
void LoadRegister(uint16_t ®, bool eightBitMode);
|
|
void StoreRegister(uint16_t val, bool eightBitMode);
|
|
|
|
void LDA();
|
|
void LDX();
|
|
void LDY();
|
|
|
|
void STA();
|
|
void STX();
|
|
void STY();
|
|
void STZ();
|
|
|
|
//Test bits
|
|
template<typename T> void TestBits(T value, bool alterZeroFlagOnly);
|
|
void BIT();
|
|
|
|
void TRB();
|
|
void TSB();
|
|
|
|
//Transfer registers
|
|
void TAX();
|
|
void TAY();
|
|
void TCD();
|
|
void TCS();
|
|
void TDC();
|
|
void TSC();
|
|
void TSX();
|
|
void TXA();
|
|
void TXS();
|
|
void TXY();
|
|
void TYA();
|
|
void TYX();
|
|
void XBA();
|
|
void XCE();
|
|
|
|
//No operation
|
|
void NOP();
|
|
void WDM();
|
|
|
|
//Misc.
|
|
void STP();
|
|
void WAI();
|
|
|
|
//Addressing modes
|
|
//Absolute: a
|
|
void AddrMode_Abs();
|
|
//Absolute Indexed: a,x
|
|
void AddrMode_AbsIdxX(bool isWrite);
|
|
//Absolute Indexed: a,y
|
|
void AddrMode_AbsIdxY(bool isWrite);
|
|
//Absolute Long: al
|
|
void AddrMode_AbsLng();
|
|
//Absolute Long Indexed: al,x
|
|
void AddrMode_AbsLngIdxX();
|
|
|
|
void AddrMode_AbsJmp();
|
|
void AddrMode_AbsLngJmp();
|
|
void AddrMode_AbsIdxXInd(); //JMP/JSR
|
|
void AddrMode_AbsInd(); //JMP only
|
|
void AddrMode_AbsIndLng(); //JML only
|
|
|
|
void AddrMode_Acc();
|
|
|
|
void AddrMode_BlkMov();
|
|
|
|
uint8_t ReadDirectOperandByte();
|
|
|
|
//Direct: d
|
|
void AddrMode_Dir();
|
|
//Direct Indexed: d,x
|
|
void AddrMode_DirIdxX();
|
|
//Direct Indexed: d,y
|
|
void AddrMode_DirIdxY();
|
|
//Direct Indirect: (d)
|
|
void AddrMode_DirInd();
|
|
|
|
//Direct Indexed Indirect: (d,x)
|
|
void AddrMode_DirIdxIndX();
|
|
//Direct Indirect Indexed: (d),y
|
|
void AddrMode_DirIndIdxY(bool isWrite);
|
|
//Direct Indirect Long: [d]
|
|
void AddrMode_DirIndLng();
|
|
//Direct Indirect Indexed Long: [d],y
|
|
void AddrMode_DirIndLngIdxY();
|
|
|
|
void AddrMode_Imm8();
|
|
void AddrMode_Imm16();
|
|
void AddrMode_ImmX();
|
|
void AddrMode_ImmM();
|
|
|
|
void AddrMode_Imp();
|
|
|
|
void AddrMode_RelLng();
|
|
void AddrMode_Rel();
|
|
|
|
void AddrMode_StkRel();
|
|
void AddrMode_StkRelIndIdxY();
|
|
|
|
void RunOp();
|
|
|
|
public:
|
|
#ifndef DUMMYCPU
|
|
Cpu(Console *console);
|
|
#else
|
|
DummyCpu(Console* console, CpuType type);
|
|
#endif
|
|
|
|
virtual ~Cpu();
|
|
|
|
void PowerOn();
|
|
|
|
void Reset();
|
|
void Exec();
|
|
|
|
CpuState GetState();
|
|
uint64_t GetCycleCount();
|
|
|
|
template<uint64_t value>
|
|
void IncreaseCycleCount();
|
|
|
|
void SetNmiFlag(bool nmiFlag);
|
|
void DetectNmiSignalEdge();
|
|
|
|
void SetIrqSource(IrqSource source);
|
|
bool CheckIrqSource(IrqSource source);
|
|
void ClearIrqSource(IrqSource source);
|
|
|
|
// Inherited via ISerializable
|
|
void Serialize(Serializer &s) override;
|
|
|
|
#ifdef DUMMYCPU
|
|
private:
|
|
MemoryMappings* _memoryMappings;
|
|
uint32_t _writeCounter = 0;
|
|
uint32_t _writeAddresses[10];
|
|
uint8_t _writeValue[10];
|
|
|
|
uint32_t _readCounter = 0;
|
|
uint32_t _readAddresses[10];
|
|
uint8_t _readValue[10];
|
|
|
|
void LogRead(uint32_t addr, uint8_t value);
|
|
void LogWrite(uint32_t addr, uint8_t value);
|
|
|
|
public:
|
|
void SetDummyState(CpuState &state);
|
|
int32_t GetLastOperand();
|
|
|
|
uint32_t GetWriteCount();
|
|
uint32_t GetReadCount();
|
|
void GetWriteInfo(uint32_t index, uint32_t &addr, uint8_t &value);
|
|
void GetReadInfo(uint32_t index, uint32_t &addr, uint8_t &value);
|
|
#endif
|
|
};
|
|
|
|
template<uint64_t count>
|
|
void Cpu::IncreaseCycleCount()
|
|
{
|
|
_state.CycleCount += count;
|
|
}
|
|
|
|
#endif |