93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*
|
|
* This file is part of the 65816 Emulator Library.
|
|
* Copyright (c) 2018 Francesco Rigoni.
|
|
*
|
|
* https://github.com/FrancescoRigoni/Lib65816
|
|
*
|
|
* 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, version 3.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef CPUSTATUS_H
|
|
#define CPUSTATUS_H
|
|
|
|
#include <stdint.h>
|
|
|
|
class CpuStatus {
|
|
public:
|
|
CpuStatus();
|
|
|
|
void setZeroFlag();
|
|
void clearZeroFlag();
|
|
bool zeroFlag();
|
|
|
|
void setSignFlag();
|
|
void clearSignFlag();
|
|
bool signFlag();
|
|
|
|
void setDecimalFlag();
|
|
void clearDecimalFlag();
|
|
bool decimalFlag();
|
|
|
|
void setInterruptDisableFlag();
|
|
void clearInterruptDisableFlag();
|
|
bool interruptDisableFlag();
|
|
|
|
void setAccumulatorWidthFlag();
|
|
void clearAccumulatorWidthFlag();
|
|
bool accumulatorWidthFlag();
|
|
|
|
void setIndexWidthFlag();
|
|
void clearIndexWidthFlag();
|
|
bool indexWidthFlag();
|
|
|
|
void setCarryFlag();
|
|
void clearCarryFlag();
|
|
bool carryFlag();
|
|
|
|
void setBreakFlag();
|
|
void clearBreakFlag();
|
|
bool breakFlag();
|
|
|
|
void setOverflowFlag();
|
|
void clearOverflowFlag();
|
|
bool overflowFlag();
|
|
|
|
void setEmulationFlag();
|
|
void clearEmulationFlag();
|
|
bool emulationFlag();
|
|
|
|
uint8_t getRegisterValue();
|
|
void setRegisterValue(uint8_t);
|
|
|
|
void updateZeroFlagFrom8BitValue(uint8_t);
|
|
void updateZeroFlagFrom16BitValue(uint16_t);
|
|
void updateSignFlagFrom8BitValue(uint8_t);
|
|
void updateSignFlagFrom16BitValue(uint16_t);
|
|
void updateSignAndZeroFlagFrom8BitValue(uint8_t);
|
|
void updateSignAndZeroFlagFrom16BitValue(uint16_t);
|
|
|
|
private:
|
|
bool mZeroFlag = false;
|
|
bool mSignFlag = false;
|
|
bool mDecimalFlag = false;
|
|
bool mInterruptDisableFlag = false;
|
|
bool mAccumulatorWidthFlag = false;
|
|
bool mIndexWidthFlag = false;
|
|
bool mCarryFlag = false;
|
|
bool mEmulationFlag = true; // CPU Starts in emulation mode
|
|
bool mOverflowFlag = false;
|
|
bool mBreakFlag = false;
|
|
};
|
|
|
|
#endif // CPUSTATUS_H
|