56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
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/////////////////////////////////////////////////////////////////////
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// Mapper 95
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class NES_mapper95 : public NES_mapper
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{
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friend void adopt_MPRD(SnssMapperBlock* block, NES* nes);
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friend int extract_MPRD(SnssMapperBlock* block, NES* nes);
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public:
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NES_mapper95(NES* parent) : NES_mapper(parent) {}
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~NES_mapper95() {}
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void Reset();
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void MemoryWrite(uint32 addr, uint8 data);
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protected:
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uint8 regs[1];
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uint32 prg0,prg1;
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uint32 chr01,chr23,chr4,chr5,chr6,chr7;
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uint32 chr_swap() { return regs[0] & 0x80; }
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uint32 prg_swap() { return regs[0] & 0x40; }
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void MMC3_set_CPU_banks()
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{
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if(prg_swap())
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{
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set_CPU_banks(num_8k_ROM_banks-2,prg1,prg0,num_8k_ROM_banks-1);
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}
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else
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{
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set_CPU_banks(prg0,prg1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
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}
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}
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void MMC3_set_PPU_banks()
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{
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if(num_1k_VROM_banks)
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{
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if(chr_swap())
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{
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set_PPU_banks(chr4,chr5,chr6,chr7,chr01,chr01+1,chr23,chr23+1);
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}
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else
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{
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set_PPU_banks(chr01,chr01+1,chr23,chr23+1,chr4,chr5,chr6,chr7);
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}
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}
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}
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void SNSS_fixup();
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private:
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};
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/////////////////////////////////////////////////////////////////////
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