47 lines
No EOL
1.1 KiB
C++
47 lines
No EOL
1.1 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "MMC3.h"
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//TKSROM and TLSROM
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class TxSRom : public MMC3
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{
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protected:
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virtual void StreamState(bool saving)
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{
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MMC3::StreamState(saving);
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}
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void UpdateMirroring()
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{
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//This is disabled, 8001 writes are used to setup mirroring instead
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}
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void WriteRegister(uint16_t addr, uint8_t value)
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{
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if((addr & 0xE001) == 0x8001) {
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uint8_t* nametable = GetNametable(value >> 7);
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if(GetChrMode() == 0) {
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switch(GetCurrentRegister()) {
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case 0:
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SetPpuMemoryMapping(0x2000, 0x23FF, nametable);
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SetPpuMemoryMapping(0x2400, 0x27FF, nametable);
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break;
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case 1:
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SetPpuMemoryMapping(0x2800, 0x2BFF, nametable);
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SetPpuMemoryMapping(0x2C00, 0x2FFF, nametable);
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break;
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}
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} else {
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switch(GetCurrentRegister()) {
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case 2: SetPpuMemoryMapping(0x2000, 0x23FF, nametable); break;
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case 3: SetPpuMemoryMapping(0x2400, 0x27FF, nametable); break;
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case 4: SetPpuMemoryMapping(0x2800, 0x2BFF, nametable); break;
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case 5: SetPpuMemoryMapping(0x2C00, 0x2FFF, nametable); break;
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}
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}
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}
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MMC3::WriteRegister(addr, value);
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}
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}; |