Mesen/Core/DaouInfosys.h

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#pragma once
#include "stdafx.h"
#include "BaseMapper.h"
class DaouInfosys : public BaseMapper
{
private:
uint8_t _chrLow[8];
uint8_t _chrHigh[8];
protected:
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virtual uint16_t RegisterStartAddress() override { return 0xC000; }
virtual uint16_t RegisterEndAddress() override { return 0xC014; }
virtual uint16_t GetPRGPageSize() override { return 0x4000; }
virtual uint16_t GetCHRPageSize() override { return 0x400; }
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void InitMapper() override
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{
memset(_chrLow, 0, sizeof(_chrLow));
memset(_chrHigh, 0, sizeof(_chrHigh));
SelectPRGPage(1, -1);
SetMirroringType(MirroringType::ScreenAOnly);
}
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void StreamState(bool saving) override
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{
BaseMapper::StreamState(saving);
ArrayInfo<uint8_t> chrLow{ _chrLow, 8 };
ArrayInfo<uint8_t> chrHigh{ _chrHigh, 8 };
Stream(chrLow, chrHigh);
if(!saving) {
UpdateChrBanks();
}
}
void UpdateChrBanks()
{
for(int i = 0; i < 8; i++) {
SelectCHRPage(i, (_chrHigh[i] << 8) | _chrLow[i]);
}
}
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void WriteRegister(uint16_t addr, uint8_t value) override
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{
switch(addr) {
case 0xC000: case 0xC001: case 0xC002: case 0xC003:
case 0xC004: case 0xC005: case 0xC006: case 0xC007:
case 0xC008: case 0xC009: case 0xC00A: case 0xC00B:
case 0xC00C: case 0xC00D: case 0xC00E: case 0xC00F:
{
uint8_t bank = (addr & 0x03) + ((addr >= 0xC008) ? 4 : 0);
uint8_t* arr = (addr & 0x04) ? _chrHigh : _chrLow;
arr[bank] = value;
UpdateChrBanks();
break;
}
case 0xC010:
SelectPRGPage(0, value);
break;
case 0xC014:
SetMirroringType((value & 0x01) == 0x01 ? MirroringType::Horizontal : MirroringType::Vertical);
break;
}
}
};