2016-11-07 04:34:34 +00:00
|
|
|
#pragma once
|
|
|
|
#include "stdafx.h"
|
|
|
|
#include "BaseMapper.h"
|
|
|
|
|
|
|
|
class Ghostbusters63in1 : public BaseMapper
|
|
|
|
{
|
|
|
|
private:
|
|
|
|
uint8_t _regs[2];
|
|
|
|
|
|
|
|
protected:
|
2016-12-18 04:14:47 +00:00
|
|
|
uint16_t GetPRGPageSize() override { return 0x4000; }
|
|
|
|
uint16_t GetCHRPageSize() override { return 0x2000; }
|
2016-11-07 04:34:34 +00:00
|
|
|
|
|
|
|
void InitMapper() override
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2016-12-18 04:14:47 +00:00
|
|
|
void Reset(bool softReset) override
|
2016-11-07 04:34:34 +00:00
|
|
|
{
|
|
|
|
_regs[0] = _regs[1] = 0;
|
|
|
|
UpdateState();
|
|
|
|
}
|
|
|
|
|
2016-12-18 04:14:47 +00:00
|
|
|
void StreamState(bool saving) override
|
2016-11-07 04:34:34 +00:00
|
|
|
{
|
|
|
|
BaseMapper::StreamState(saving);
|
|
|
|
Stream(_regs[0], _regs[1]);
|
|
|
|
|
|
|
|
if(!saving) {
|
|
|
|
UpdateState();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void UpdateState()
|
|
|
|
{
|
|
|
|
uint8_t chip = (_regs[1] << 5 & 0x20) << (_regs[0] >> 7);
|
|
|
|
if(chip < (_regs[0] >> 7)) {
|
|
|
|
RemoveCpuMemoryMapping(0x8000, 0xFFFF);
|
|
|
|
} else {
|
|
|
|
SelectPRGPage(0, chip | (_regs[0] & 0x1E) | (_regs[0] >> 5 & _regs[0]));
|
|
|
|
SelectPRGPage(1, chip | (_regs[0] & 0x1F) | (~_regs[0] >> 5 & 0x01));
|
|
|
|
}
|
|
|
|
|
|
|
|
SelectCHRPage(0, 0);
|
|
|
|
SetMirroringType(_regs[0] & 0x40 ? MirroringType::Vertical : MirroringType::Horizontal);
|
|
|
|
}
|
|
|
|
|
|
|
|
void WriteRegister(uint16_t addr, uint8_t value) override
|
|
|
|
{
|
|
|
|
_regs[addr & 0x01] = value;
|
|
|
|
UpdateState();
|
|
|
|
}
|
|
|
|
};
|