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42 lines
910 B
C++
42 lines
910 B
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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void UpdateMirroring() override
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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) override
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{
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if((addr & 0xE001) == 0x8001) {
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uint8_t nametable = 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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SetNametable(0, nametable);
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SetNametable(1, nametable);
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break;
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case 1:
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SetNametable(2, nametable);
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SetNametable(3, 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: SetNametable(0, nametable); break;
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case 3: SetNametable(1, nametable); break;
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case 4: SetNametable(2, nametable); break;
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case 5: SetNametable(3, 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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}; |