44 lines
983 B
C
44 lines
983 B
C
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/////////////////////////////////////////////////////////////////////
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// Mapper 100
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class NES_mapper100 : 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_mapper100(NES* parent) : NES_mapper(parent) {}
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~NES_mapper100() {}
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void Reset();
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void MemoryWrite(uint32 addr, uint8 data);
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void HSync(uint32 scanline);
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protected:
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uint8 regs[8];
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uint32 prg0,prg1,prg2,prg3;
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uint32 chr0,chr1,chr2,chr3,chr4,chr5,chr6,chr7;
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uint8 irq_enabled; // IRQs enabled
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uint8 irq_counter; // IRQ scanline counter, decreasing
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uint8 irq_latch; // IRQ scanline counter latch
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void MMC3_set_CPU_banks()
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{
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set_CPU_banks(prg0,prg1,prg2,prg3);
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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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set_PPU_banks(chr0,chr1,chr2,chr3,chr4,chr5,chr6,chr7);
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}
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}
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private:
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};
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/////////////////////////////////////////////////////////////////////
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