Mesen/Core/TaitoTc0190.h

#pragma once
#include "stdafx.h"
#include "BaseMapper.h"

class TaitoTc0190 : public BaseMapper
{
	protected:
		virtual uint16_t GetPRGPageSize() override { return 0x2000; }
		virtual uint16_t GetCHRPageSize() override {	return 0x0400; }

		void InitMapper() override 
		{
			SelectPRGPage(2, -2);
			SelectPRGPage(3, -1);
		}

		void WriteRegister(uint16_t addr, uint8_t value) override
		{
			switch(addr & 0xA003) {
				case 0x8000:
					SelectPRGPage(0, value & 0x3F);
					SetMirroringType((value & 0x40) == 0x40 ? MirroringType::Horizontal : MirroringType::Vertical);
					break;
				case 0x8001:
					SelectPRGPage(1, value & 0x3F);
					break;
				case 0x8002: 
					SelectCHRPage(0, value*2);
					SelectCHRPage(1, value*2+1);
					break;				
				case 0x8003:
					SelectCHRPage(2, value*2);
					SelectCHRPage(3, value*2+1);
					break;
				case 0xA000: case 0xA001: case 0xA002: case 0xA003:
					SelectCHRPage(4 + (addr & 0x03), value);
					break;
			}
		}
};