47 lines
No EOL
1.2 KiB
C++
47 lines
No EOL
1.2 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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#include "ControlManager.h"
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#include "StandardController.h"
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class BandaiKaraoke : public BaseMapper
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{
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protected:
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virtual uint16_t GetPRGPageSize() override { return 0x4000; }
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virtual uint16_t GetCHRPageSize() override { return 0x2000; }
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virtual bool AllowRegisterRead() override { return true; }
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void InitMapper() override
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{
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AddRegisterRange(0x6000, 0x7FFF, MemoryOperation::Read);
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RemoveRegisterRange(0x8000, 0xFFFF, MemoryOperation::Read);
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SelectPRGPage(0, 0);
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SelectPRGPage(1, 0x07);
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SelectCHRPage(0, 0);
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}
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uint8_t ReadRegister(uint16_t addr) override
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{
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//Microphone not implemented - always return A/B buttons as not pressed
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return 0x03;
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}
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void WriteRegister(uint16_t addr, uint8_t value) override
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{
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if(value & 0x10) {
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//Select internal rom
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SelectPRGPage(0, value & 0x07);
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} else {
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//Select expansion rom
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if(_prgSize >= 0x40000) {
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SelectPRGPage(0, (value & 0x07) | 0x08);
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} else {
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//Open bus for roms that don't contain the expansion rom
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RemoveCpuMemoryMapping(0x8000, 0xBFFF);
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}
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}
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SetMirroringType(value & 0x20 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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}; |