#pragma once #include "stdafx.h" #include "BaseMapper.h" class Kaiser7057 : public BaseMapper { private: uint8_t _regs[8]; protected: uint16_t GetPRGPageSize() override { return 0x800; } uint16_t GetCHRPageSize() override { return 0x2000; } void InitMapper() override { memset(_regs, 0, sizeof(_regs)); SelectCHRPage(0, 0); UpdateState(); } void StreamState(bool saving) override { BaseMapper::StreamState(saving); ArrayInfo regs{ _regs, 8 }; Stream(regs); if(!saving) { UpdateState(); } } void UpdateState() { for(int i = 0; i < 4; i++) { SetCpuMemoryMapping(0x6000 + 0x800 * i, 0x67FF + 0x800 * i, _regs[4 + i], PrgMemoryType::PrgRom); SelectPRGPage(i, _regs[i]); } SelectPrgPage4x(1, 0x34); SelectPrgPage4x(2, 0x38); SelectPrgPage4x(3, 0x3C); } void UpdatePrgReg(int index, uint8_t value, bool low) { if(low) { _regs[index] = (_regs[index] & 0xF0) | (value & 0x0F); } else { _regs[index] = (_regs[index] & 0x0F) | ((value << 4) & 0xF0); } UpdateState(); } void WriteRegister(uint16_t addr, uint8_t value) override { bool low = (addr & 0x01) == 0x00; switch(addr & 0xF002) { case 0x8000: case 0x8002: case 0x9000: case 0x9002: SetMirroringType(value & 0x01 ? MirroringType::Vertical : MirroringType::Horizontal); break; case 0xB000: UpdatePrgReg(0, value, low); break; case 0xB002: UpdatePrgReg(1, value, low); break; case 0xC000: UpdatePrgReg(2, value, low); break; case 0xC002: UpdatePrgReg(3, value, low); break; case 0xD000: UpdatePrgReg(4, value, low); break; case 0xD002: UpdatePrgReg(5, value, low); break; case 0xE000: UpdatePrgReg(6, value, low); break; case 0xE002: UpdatePrgReg(7, value, low); break; } } };