261 lines
9.2 KiB
C++
261 lines
9.2 KiB
C++
#ifdef _NES_MAPPER_CPP_
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/////////////////////////////////////////////////////////////////////
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// Mapper NSF - private mapper number = 12 (decimal)
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void NES_mapperNSF::Reset()
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{
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uint8 i;
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uint32 j;
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// Init ExSound
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chip_type = ROM_banks[0x7B] & 0x3F;
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parent_NES->apu->SelectExSound(chip_type);
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parent_NES->MemoryWrite(0x4015, 0x1f);
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// Init Banks
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uint8 bank_switch = 0;
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for(i = 0; i < 8; i++)
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{
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bank_switch |= ROM_banks[0x70+i];
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}
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if(bank_switch)
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{
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uint8 start_bank = ROM_banks[0x9] >> 4;
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for(i = 0; (start_bank + i) < 8; i++)
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{
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BankSwitch(start_bank+i, i);
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}
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for(i = 0; i < 8; i++)
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{
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BankSwitch(i+8, ROM_banks[0x70+i]);
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}
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if(chip_type & 4)
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{
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BankSwitch(6, ROM_banks[0x76]);
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BankSwitch(7, ROM_banks[0x77]);
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}
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}
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else
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{
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uint32 nsf_size = ROM_banks[0x0] | (ROM_banks[0x1]<<8) | (ROM_banks[0x2]<<16);
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uint32 load_addr = ROM_banks[0x8] | (ROM_banks[0x9]<<8);
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for(j = 0; j < nsf_size-0x80; j++)
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{
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wram2[(load_addr+j) & 0x7FFF] = ROM_banks[j+0x80];
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}
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}
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// Load Player Program
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LoadPlayer();
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// Map WRAM
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NES_6502::Context context;
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parent_NES->cpu->GetContext(&context);
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context.mem_page[3] = wram1 + 0x0000; // $6000-$7FFF (FDS)
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context.mem_page[4] = wram2 + 0x0000; // $8000-$9FFF
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context.mem_page[5] = wram2 + 0x2000; // $A000-$BFFF
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context.mem_page[6] = wram2 + 0x4000; // $C000-$DFFF
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context.mem_page[7] = wram2 + 0x6000; // $E000-$FFFF
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parent_NES->cpu->SetContext(&context);
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}
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void NES_mapperNSF::MemoryWriteLow(uint32 addr, uint8 data)
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{
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if(addr >= 0x5FF6 && addr <= 0x5FFF)
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{
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BankSwitch(addr & 0xF, data);
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}
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parent_NES->apu->ExWrite(addr, data);
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}
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void NES_mapperNSF::MemoryWriteSaveRAM(uint32 addr, uint8 data)
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{
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if((chip_type & 4) || addr < 0x7E40 || addr >= 0x7FF0)
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{
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wram1[addr - 0x6000] = data;
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}
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parent_NES->apu->ExWrite(addr, data);
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}
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void NES_mapperNSF::MemoryWrite(uint32 addr, uint8 data)
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{
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if((chip_type & 4) && addr >= 0xFFF0 && addr <= 0xFFF2)
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{
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wram2[addr & 0x7FFF] = data;
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}
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parent_NES->apu->ExWrite(addr, data);
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}
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uint8 NES_mapperNSF::MemoryReadLow(uint32 addr)
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{
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return parent_NES->apu->ExRead(addr);
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}
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void NES_mapperNSF::BankSwitch(uint8 num, uint8 bank)
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{
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uint32 load_start = (ROM_banks[0x8] | (ROM_banks[0x9] << 8)) & 0x0FFF;
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if(num == 6 || num == 7)
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{
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for(uint32 i = 0; i < 0x1000; i++)
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{
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int32 adr = 0x1000 * bank + i + 0x80 - load_start;
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if(adr < 0)
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{
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wram1[0x1000*(num&1)+i] = 0;
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}
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else
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{
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wram1[0x1000*(num&1)+i] = ROM_banks[adr];
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}
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}
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}
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else if(num >= 8 && num <= 14)
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{
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for(uint32 i = 0; i < 0x1000; i++)
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{
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int32 adr = 0x1000 * bank + i + 0x80 - load_start;
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if(adr < 0)
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{
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wram2[0x1000*(num&7)+i] = 0;
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}
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else
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{
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wram2[0x1000*(num&7)+i] = ROM_banks[adr];
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}
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}
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}
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else if(num == 15)
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{
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uint32 adr_max;
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if(chip_type & 4)
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{
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adr_max = 0xE40;
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}
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else
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{
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adr_max = 0xFFA;
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}
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for(uint32 i = 0; i < adr_max; i++)
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{
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int32 adr = 0x1000 * bank + i + 0x80 - load_start;
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if(adr < 0)
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{
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wram2[0x1000*(num&7)+i] = 0;
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}
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else
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{
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wram2[0x1000*(num&7)+i] = ROM_banks[adr];
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}
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}
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}
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}
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void NES_mapperNSF::LoadPlayer()
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{
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// Load Player (thanx Chris Covell)
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uint8 play_prg1[0x1C0] =
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{
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0x78,0xd8,0xa2,0xff,0x9a,0xad,0x02,0x20,0x10,0xfb,0xa9,0x00,0xaa,0x95,0x00,0x9d,
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0x00,0x01,0x9d,0x00,0x02,0x9d,0x00,0x03,0x9d,0x00,0x04,0x9d,0x00,0x05,0x9d,0x00,
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0x06,0x9d,0x00,0x07,0xe8,0xd0,0xe6,0xa9,0x80,0x8d,0x00,0x20,0xa9,0x00,0x8d,0x01,
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0x20,0xa9,0x00,0x8d,0x06,0x20,0x8d,0x06,0x20,0xaa,0x8d,0x07,0x20,0xe8,0xe0,0x10,
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0xd0,0xf8,0xa9,0x01,0x8d,0x06,0x20,0xa9,0x00,0x8d,0x06,0x20,0xa2,0x00,0xa0,0x00,
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0xbd,0x70,0x7f,0x8d,0x07,0x20,0xe8,0xc8,0xc0,0x08,0xd0,0xf4,0xa0,0x00,0x8c,0x07,
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0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,
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0x8c,0x07,0x20,0x8c,0x07,0x20,0xe0,0x80,0xd0,0xd6,0xa9,0x3f,0x8d,0x06,0x20,0xa9,
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0x00,0x8d,0x06,0x20,0xa9,0x0e,0x8d,0x07,0x20,0xa9,0x30,0x8d,0x07,0x20,0xa9,0x00,
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0x8d,0xf1,0x7f,0xa9,0x0e,0x8d,0x01,0x20,0xa9,0x00,0x8d,0xf1,0x7f,0x20,0x00,0x80,
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0xa9,0x01,0x8d,0xf0,0x7f,0x20,0x4d,0x7f,0x29,0x10,0xf0,0xf9,0xee,0xf1,0x7f,0xa9,
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0xff,0xcd,0xf1,0x7f,0xd0,0x05,0xa9,0x00,0x8d,0xf1,0x7f,0xa9,0x00,0x8d,0xf0,0x7f,
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0xad,0xf1,0x7f,0x20,0x00,0x80,0xa9,0x01,0x8d,0xf0,0x7f,0x4c,0xe5,0x7e,0x48,0x8a,
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0x48,0x98,0x48,0xa9,0x20,0x8d,0x06,0x20,0x8d,0x06,0x20,0xad,0xf1,0x7f,0x4a,0x4a,
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0x4a,0x4a,0x09,0x10,0x8d,0x07,0x20,0xad,0xf1,0x7f,0x29,0x0f,0x09,0x10,0x8d,0x07,
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0x20,0xa9,0x00,0x8d,0x06,0x20,0x8d,0x06,0x20,0x8d,0x05,0x20,0x8d,0x05,0x20,0xad,
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0xf0,0x7f,0xf0,0x03,0x20,0x00,0x80,0x68,0xa8,0x68,0xaa,0x68,0x40,0xa0,0x08,0xa2,
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0x01,0x8e,0x16,0x40,0xca,0x8e,0x16,0x40,0xad,0x16,0x40,0x6a,0x8a,0x2a,0xaa,0x88,
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0xd0,0xf6,0xcd,0xf2,0x7f,0xf0,0x04,0x8d,0xf2,0x7f,0x60,0xa9,0x00,0x60,0x00,0x00,
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0x38,0x4c,0xc6,0xc6,0xc6,0x64,0x38,0x00,0x18,0x38,0x18,0x18,0x18,0x18,0x7e,0x00,
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0x7c,0xc6,0x0e,0x3c,0x78,0xe0,0xfe,0x00,0x7e,0x0c,0x18,0x3c,0x06,0xc6,0x7c,0x00,
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0x1c,0x3c,0x6c,0xcc,0xfe,0x0c,0x0c,0x00,0xfc,0xc0,0xfc,0x06,0x06,0xc6,0x7c,0x00,
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0x3c,0x60,0xc0,0xfc,0xc6,0xc6,0x7c,0x00,0xfe,0xc6,0x0c,0x18,0x30,0x30,0x30,0x00,
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0x7c,0xc6,0xc6,0x7c,0xc6,0xc6,0x7c,0x00,0x7c,0xc6,0xc6,0x7e,0x06,0x0c,0x78,0x00,
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0x38,0x6c,0xc6,0xc6,0xfe,0xc6,0xc6,0x00,0xfc,0xc6,0xc6,0xfc,0xc6,0xc6,0xfc,0x00,
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0x3c,0x66,0xc0,0xc0,0xc0,0x66,0x3c,0x00,0xf8,0xcc,0xc6,0xc6,0xc6,0xcc,0xf8,0x00,
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0xfe,0xc0,0xc0,0xfc,0xc0,0xc0,0xfe,0x00,0xfe,0xc0,0xc0,0xfc,0xc0,0xc0,0xc0,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0e,0x7f,0x40,0x7e,0x0e,0x7f
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};
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uint8 play_prg2[0x1C0] =
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{
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0x78,0xd8,0xa2,0xff,0x9a,0xad,0x02,0x20,0x10,0xfb,0xa9,0x00,0xaa,0x95,0x00,0x9d,
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0x00,0x01,0x9d,0x00,0x02,0x9d,0x00,0x03,0x9d,0x00,0x04,0x9d,0x00,0x05,0x9d,0x00,
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0x06,0x9d,0x00,0x07,0xe8,0xd0,0xe6,0xa9,0x80,0x8d,0x00,0x20,0xa9,0x00,0x8d,0x01,
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0x20,0xa9,0x00,0x8d,0x06,0x20,0x8d,0x06,0x20,0xaa,0x8d,0x07,0x20,0xe8,0xe0,0x10,
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0xd0,0xf8,0xa9,0x01,0x8d,0x06,0x20,0xa9,0x00,0x8d,0x06,0x20,0xa2,0x00,0xa0,0x00,
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0xbd,0x70,0xff,0x8d,0x07,0x20,0xe8,0xc8,0xc0,0x08,0xd0,0xf4,0xa0,0x00,0x8c,0x07,
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0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,0x8c,0x07,0x20,
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0x8c,0x07,0x20,0x8c,0x07,0x20,0xe0,0x80,0xd0,0xd6,0xa9,0x3f,0x8d,0x06,0x20,0xa9,
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0x00,0x8d,0x06,0x20,0xa9,0x0e,0x8d,0x07,0x20,0xa9,0x30,0x8d,0x07,0x20,0xa9,0x00,
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0x8d,0xf1,0xff,0xa9,0x0e,0x8d,0x01,0x20,0xa9,0x00,0x8d,0xf1,0xff,0x20,0x00,0x80,
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0xa9,0x01,0x8d,0xf0,0xff,0x20,0x4d,0xff,0x29,0x10,0xf0,0xf9,0xee,0xf1,0xff,0xa9,
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0xff,0xcd,0xf1,0xff,0xd0,0x05,0xa9,0x00,0x8d,0xf1,0xff,0xa9,0x00,0x8d,0xf0,0xff,
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0xad,0xf1,0xff,0x20,0x00,0x80,0xa9,0x01,0x8d,0xf0,0xff,0x4c,0xe5,0xfe,0x48,0x8a,
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0x48,0x98,0x48,0xa9,0x20,0x8d,0x06,0x20,0x8d,0x06,0x20,0xad,0xf1,0xff,0x4a,0x4a,
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0x4a,0x4a,0x09,0x10,0x8d,0x07,0x20,0xad,0xf1,0xff,0x29,0x0f,0x09,0x10,0x8d,0x07,
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0x20,0xa9,0x00,0x8d,0x06,0x20,0x8d,0x06,0x20,0x8d,0x05,0x20,0x8d,0x05,0x20,0xad,
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0xf0,0xff,0xf0,0x03,0x20,0x00,0x80,0x68,0xa8,0x68,0xaa,0x68,0x40,0xa0,0x08,0xa2,
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0x01,0x8e,0x16,0x40,0xca,0x8e,0x16,0x40,0xad,0x16,0x40,0x6a,0x8a,0x2a,0xaa,0x88,
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0xd0,0xf6,0xcd,0xf2,0xff,0xf0,0x04,0x8d,0xf2,0xff,0x60,0xa9,0x00,0x60,0x00,0x00,
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0x38,0x4c,0xc6,0xc6,0xc6,0x64,0x38,0x00,0x18,0x38,0x18,0x18,0x18,0x18,0x7e,0x00,
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0x7c,0xc6,0x0e,0x3c,0x78,0xe0,0xfe,0x00,0x7e,0x0c,0x18,0x3c,0x06,0xc6,0x7c,0x00,
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0x1c,0x3c,0x6c,0xcc,0xfe,0x0c,0x0c,0x00,0xfc,0xc0,0xfc,0x06,0x06,0xc6,0x7c,0x00,
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0x3c,0x60,0xc0,0xfc,0xc6,0xc6,0x7c,0x00,0xfe,0xc6,0x0c,0x18,0x30,0x30,0x30,0x00,
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0x7c,0xc6,0xc6,0x7c,0xc6,0xc6,0x7c,0x00,0x7c,0xc6,0xc6,0x7e,0x06,0x0c,0x78,0x00,
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0x38,0x6c,0xc6,0xc6,0xfe,0xc6,0xc6,0x00,0xfc,0xc6,0xc6,0xfc,0xc6,0xc6,0xfc,0x00,
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0x3c,0x66,0xc0,0xc0,0xc0,0x66,0x3c,0x00,0xf8,0xcc,0xc6,0xc6,0xc6,0xcc,0xf8,0x00,
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0xfe,0xc0,0xc0,0xfc,0xc0,0xc0,0xfe,0x00,0xfe,0xc0,0xc0,0xfc,0xc0,0xc0,0xc0,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0e,0xff,0x40,0xfe,0x0e,0xff
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};
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if(chip_type & 4)
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{
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// $FE40 - $FFFF (FDS)
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for(uint32 i = 0; i < 0x1C0; i++)
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{
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wram2[0x7E40+i] = play_prg2[i];
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}
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wram2[0x7E40+0x09E] = ROM_banks[0xA]; // INIT_ADR
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wram2[0x7E40+0x09F] = ROM_banks[0xB];
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wram2[0x7E40+0x0C4] = ROM_banks[0xA]; // INIT_ADR
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wram2[0x7E40+0x0C5] = ROM_banks[0xB];
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wram2[0x7E40+0x105] = ROM_banks[0xC]; // PLAY_ADR
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wram2[0x7E40+0x106] = ROM_banks[0xD];
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wram2[0x7E40+0x0B0] = ROM_banks[0x6]; // MAX_SONG
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}
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else
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{
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// $7E40 - $7FFF (non FDS)
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for(uint32 i = 0; i < 0x1C0; i++)
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{
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wram1[0x1E40+i] = play_prg1[i];
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}
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wram1[0x1E40+0x09E] = ROM_banks[0xA]; // INIT_ADR
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wram1[0x1E40+0x09F] = ROM_banks[0xB];
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wram1[0x1E40+0x0C4] = ROM_banks[0xA]; // INIT_ADR
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wram1[0x1E40+0x0C5] = ROM_banks[0xB];
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wram1[0x1E40+0x105] = ROM_banks[0xC]; // PLAY_ADR
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wram1[0x1E40+0x106] = ROM_banks[0xD];
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wram1[0x1E40+0x0B0] = ROM_banks[0x6]; // MAX_SONG
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wram2[0x7FFA] = 0x0E;
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wram2[0x7FFB] = 0x7F;
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wram2[0x7FFC] = 0x40;
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wram2[0x7FFD] = 0x7E;
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wram2[0x7FFE] = 0x0E;
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wram2[0x7FFF] = 0x7F;
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}
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}
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/////////////////////////////////////////////////////////////////////
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#endif
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