#ifdef _NES_MAPPER_CPP_ ///////////////////////////////////////////////////////////////////// // Mapper 95 void NES_mapper95::Reset() { regs[0] = 0x00; // set CPU bank pointers prg0 = 0; prg1 = 1; MMC3_set_CPU_banks(); // set VROM banks if(num_1k_VROM_banks) { chr01 = 0; chr23 = 2; chr4 = 4; chr5 = 5; chr6 = 6; chr7 = 7; MMC3_set_PPU_banks(); } else { chr01 = chr23 = chr4 = chr5 = chr6 = chr7 = 0; } } void NES_mapper95::MemoryWrite(uint32 addr, uint8 data) { switch(addr & 0xE001) { case 0x8000: { regs[0] = data; MMC3_set_PPU_banks(); MMC3_set_CPU_banks(); } break; case 0x8001: { uint32 bank_num; if(regs[0] <= 0x05) { if(data & 0x20) { set_mirroring(1,1,1,1); } else { set_mirroring(0,0,0,0); } data &= 0x1F; } bank_num = data; switch(regs[0] & 0x07) { case 0x00: { if(num_1k_VROM_banks) { bank_num &= 0xfe; chr01 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x01: { if(num_1k_VROM_banks) { bank_num &= 0xfe; chr23 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x02: { if(num_1k_VROM_banks) { chr4 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x03: { if(num_1k_VROM_banks) { chr5 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x04: { if(num_1k_VROM_banks) { chr6 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x05: { if(num_1k_VROM_banks) { chr7 = bank_num; MMC3_set_PPU_banks(); } } break; case 0x06: { prg0 = bank_num; MMC3_set_CPU_banks(); } break; case 0x07: { prg1 = bank_num; MMC3_set_CPU_banks(); } break; } } break; } } #define MAP95_ROM(ptr) (((ptr)-parent_NES->ROM->get_ROM_banks()) >> 13) #define MAP95_VROM(ptr) (((ptr)-parent_NES->ROM->get_VROM_banks()) >> 10) void NES_mapper95::SNSS_fixup() { NES_6502::Context context; parent_NES->cpu->GetContext(&context); prg0 = MAP95_ROM(context.mem_page[prg_swap() ? 6 : 4]); prg1 = MAP95_ROM(context.mem_page[5]); if(num_1k_VROM_banks) { if(chr_swap()) { chr01 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[4]); chr23 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[6]); chr4 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[0]); chr5 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[1]); chr6 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[2]); chr7 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[3]); } else { chr01 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[0]); chr23 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[2]); chr4 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[4]); chr5 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[5]); chr6 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[6]); chr7 = MAP95_VROM(parent_NES->ppu->PPU_VRAM_banks[7]); } } } ///////////////////////////////////////////////////////////////////// #endif