void NES_mapper91::MemoryWriteSaveRAM(uint32 addr, uint8 data)
{
switch(addr & 0xF00F)
{
case 0x6000:
{
set_PPU_bank0(data*2+0);
set_PPU_bank1(data*2+1);
}
break;
case 0x6001:
{
set_PPU_bank2(data*2+0);
set_PPU_bank3(data*2+1);
}
break;
case 0x6002:
{
set_PPU_bank4(data*2+0);
set_PPU_bank5(data*2+1);
}
break;
case 0x6003:
{
set_PPU_bank6(data*2+0);
set_PPU_bank7(data*2+1);
}
break;
case 0x7000:
{
set_CPU_bank4(data);
}
break;
case 0x7001:
{
set_CPU_bank5(data);
}
break;
case 0x7002:
{
irq_counter = data;
}
break;
case 0x7003:
{
irq_enabled = data;
}
break;
}
}
void NES_mapper101::MemoryWrite(uint32 addr, uint8 data)
{
data &= 0x03;
set_PPU_bank0(data*8+0);
set_PPU_bank1(data*8+1);
set_PPU_bank2(data*8+2);
set_PPU_bank3(data*8+3);
set_PPU_bank4(data*8+4);
set_PPU_bank5(data*8+5);
set_PPU_bank6(data*8+6);
set_PPU_bank7(data*8+7);
}
void
NES_mapper19::Reset()
{
patch = 0;
if(parent_NES->crc32() == 0x761ccfb5 || // Digital Devil Story - Megami Tensei 2
parent_NES->crc32() == 0x1294ab5a) // Digital Devil Story - Megami Tensei 2
{
patch = 1;
}
if(parent_NES->crc32() == 0x96533999 || // Dokuganryuu Masamune
parent_NES->crc32() == 0x429fd177 || // Famista '90
parent_NES->crc32() == 0xdd454208 || // Hydlide 3 - Yami Kara no Houmonsha (J).nes
parent_NES->crc32() == 0xb1b9e187 || // Kaijuu Monogatari
parent_NES->crc32() == 0xaf15338f) // Mindseeker
{
patch = 2;
}
// Init ExSound
parent_NES->apu->SelectExSound(NES_APU_EXSOUND_N106);
if (parent_NES->crc32() == 0x14942c06 || // Wagyan Land 3 (j)
parent_NES->crc32() == 0x02738c68) // Youkai Doutyu ki (j)
{
parent_NES->apu->SelectExSound(NES_APU_EXSOUND_NONE);
}
// set CPU bank pointers
set_CPU_banks(0,1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
// set PPU bank pointers
if(num_1k_VROM_banks >= 8)
{
set_PPU_bank0(num_1k_VROM_banks-8);
set_PPU_bank1(num_1k_VROM_banks-7);
set_PPU_bank2(num_1k_VROM_banks-6);
set_PPU_bank3(num_1k_VROM_banks-5);
set_PPU_bank4(num_1k_VROM_banks-4);
set_PPU_bank5(num_1k_VROM_banks-3);
set_PPU_bank6(num_1k_VROM_banks-2);
set_PPU_bank7(num_1k_VROM_banks-1);
}
regs[0] = 0;
regs[1] = 0;
regs[2] = 0;
}
void NES_mapper66::MemoryWrite(uint32 addr, uint8 data)
{
uint8 chr_bank = data & 0x0F;
uint8 prg_bank = (data & 0xF0) >> 4;
set_CPU_bank4(prg_bank*4+0);
set_CPU_bank5(prg_bank*4+1);
set_CPU_bank6(prg_bank*4+2);
set_CPU_bank7(prg_bank*4+3);
set_PPU_bank0(chr_bank*8+0);
set_PPU_bank1(chr_bank*8+1);
set_PPU_bank2(chr_bank*8+2);
set_PPU_bank3(chr_bank*8+3);
set_PPU_bank4(chr_bank*8+4);
set_PPU_bank5(chr_bank*8+5);
set_PPU_bank6(chr_bank*8+6);
set_PPU_bank7(chr_bank*8+7);
}
void NES_mapper86::MemoryWriteSaveRAM(uint32 addr, uint8 data)
{
if(addr == 0x6000)
{
uint8 chr_bank = data & 0x03 | (data & 0x40) >> 4;
uint8 prg_bank = (data & 0x30) >> 4;
set_CPU_bank4(prg_bank*4+0);
set_CPU_bank5(prg_bank*4+1);
set_CPU_bank6(prg_bank*4+2);
set_CPU_bank7(prg_bank*4+3);
set_PPU_bank0(chr_bank*8+0);
set_PPU_bank1(chr_bank*8+1);
set_PPU_bank2(chr_bank*8+2);
set_PPU_bank3(chr_bank*8+3);
set_PPU_bank4(chr_bank*8+4);
set_PPU_bank5(chr_bank*8+5);
set_PPU_bank6(chr_bank*8+6);
set_PPU_bank7(chr_bank*8+7);
}
void NES_mapper17::MemoryWriteLow(uint32 addr, uint8 data)
{
switch(addr)
{
case 0x42FE:
{
if((data & 0x10) == 0)
{
set_mirroring(0,0,0,0);
}
else
{
set_mirroring(1,1,1,1);
}
}
break;
case 0x42FF:
{
if((data & 0x10) == 0)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
}
break;
case 0x4501:
{
irq_enabled = 0;
}
break;
case 0x4502:
{
irq_latch = (irq_latch & 0xFF00) | data;
}
break;
case 0x4503:
{
irq_latch = (irq_latch & 0x00FF) | ((uint32)data << 8);
irq_counter = irq_latch;
irq_enabled = 1;
}
break;
case 0x4504:
{
set_CPU_bank4(data);
}
break;
case 0x4505:
{
set_CPU_bank5(data);
}
break;
case 0x4506:
{
set_CPU_bank6(data);
}
break;
case 0x4507:
{
set_CPU_bank7(data);
}
break;
case 0x4510:
{
set_PPU_bank0(data);
}
break;
case 0x4511:
{
set_PPU_bank1(data);
}
break;
case 0x4512:
{
set_PPU_bank2(data);
}
break;
case 0x4513:
{
set_PPU_bank3(data);
}
break;
case 0x4514:
{
set_PPU_bank4(data);
}
break;
case 0x4515:
{
set_PPU_bank5(data);
}
break;
case 0x4516:
{
set_PPU_bank6(data);
}
break;
case 0x4517:
{
set_PPU_bank7(data);
}
break;
}
}
void NES_mapper24::MemoryWrite(uint32 addr, uint8 data)
{
switch(addr & 0xF003)
{
case 0x8000:
{
set_CPU_bank4(data*2+0);
set_CPU_bank5(data*2+1);
}
break;
//DCR
case 0x9000:
case 0x9001:
case 0x9002:
case 0xA000:
case 0xA001:
case 0xA002:
case 0xB000:
case 0xB001:
case 0xB002:
parent_NES->apu->Write(addr, data);
break;
case 0xB003:
{
data = data & 0x0C;
if(data == 0x00)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 0x04)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 0x08)
{
set_mirroring(0,0,0,0);
}
else if(data == 0x0C)
{
set_mirroring(1,1,1,1);
}
}
break;
case 0xC000:
{
set_CPU_bank6(data);
}
break;
case 0xD000:
{
set_PPU_bank0(data);
}
break;
case 0xD001:
{
set_PPU_bank1(data);
}
break;
case 0xD002:
{
set_PPU_bank2(data);
}
break;
case 0xD003:
{
set_PPU_bank3(data);
}
break;
case 0xE000:
{
set_PPU_bank4(data);
}
break;
case 0xE001:
{
set_PPU_bank5(data);
}
break;
case 0xE002:
{
set_PPU_bank6(data);
}
break;
case 0xE003:
{
set_PPU_bank7(data);
}
break;
case 0xF000:
{
irq_latch = data;
}
break;
case 0xF001:
{
irq_enabled = data & 0x03;
if(irq_enabled & 0x02)
{
irq_counter = irq_latch;
}
}
break;
case 0xF002:
{
if(irq_enabled & 0x01)
{
irq_enabled |= 0x02;
}
else
{
irq_enabled &= 0x01;
}
}
break;
}
}
void NES_mapper69::MemoryWrite(uint32 addr, uint8 data)
{
switch(addr & 0xE000)
{
case 0x8000:
{
regs[0] = data;
}
break;
case 0xA000:
{
switch(regs[0] & 0x0F)
{
case 0x00:
{
set_PPU_bank0(data);
}
break;
case 0x01:
{
set_PPU_bank1(data);
}
break;
case 0x02:
{
set_PPU_bank2(data);
}
break;
case 0x03:
{
set_PPU_bank3(data);
}
break;
case 0x04:
{
set_PPU_bank4(data);
}
break;
case 0x05:
{
set_PPU_bank5(data);
}
break;
case 0x06:
{
set_PPU_bank6(data);
}
break;
case 0x07:
{
set_PPU_bank7(data);
}
break;
case 0x08:
{
if(!patch)
{
if(!(data & 0x40))
{
set_CPU_bank3(data);
}
}
}
break;
case 0x09:
{
set_CPU_bank4(data);
}
break;
case 0x0A:
{
set_CPU_bank5(data);
}
break;
case 0x0B:
{
set_CPU_bank6(data);
}
break;
case 0x0C:
{
data &= 0x03;
if(data == 0)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 1)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 2)
{
set_mirroring(0,0,0,0);
}
else
{
set_mirroring(1,1,1,1);
}
}
break;
case 0x0D:
{
irq_enabled = data;
}
break;
case 0x0E:
{
irq_counter = (irq_counter & 0xFF00) | data;
}
break;
case 0x0F:
{
irq_counter = (irq_counter & 0x00FF) | (data << 8);
}
break;
}
}
break;
case 0xC000:
case 0xE000:
{
parent_NES->apu->ExWrite(addr, data);
}
break;
}
}
void NES_mapper16::MemoryWrite2(uint32 addr, uint8 data)
{
switch(addr & 0x000F)
{
case 0x0000:
{
set_PPU_bank0(data);
}
break;
case 0x0001:
{
set_PPU_bank1(data);
}
break;
case 0x0002:
{
set_PPU_bank2(data);
}
break;
case 0x0003:
{
set_PPU_bank3(data);
}
break;
case 0x0004:
{
set_PPU_bank4(data);
}
break;
case 0x0005:
{
set_PPU_bank5(data);
}
break;
case 0x0006:
{
set_PPU_bank6(data);
}
break;
case 0x0007:
{
set_PPU_bank7(data);
}
break;
case 0x0008:
{
set_CPU_bank4(data*2+0);
set_CPU_bank5(data*2+1);
}
break;
case 0x0009:
{
data &= 0x03;
if(data == 0)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 1)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 2)
{
set_mirroring(0,0,0,0);
}
else
{
set_mirroring(1,1,1,1);
}
}
break;
case 0x000A:
{
irq_enabled = data & 0x01;
irq_counter = irq_latch;
}
break;
case 0x000B:
{
irq_latch = (irq_latch & 0xFF00) | data;
}
break;
case 0x000C:
{
irq_latch = ((uint32)data << 8) | (irq_latch & 0x00FF);
}
break;
case 0x000D:
{
if(data == 0x80)
{
// reset
eeprom_addr = 0x00;
eeprom_mode = 0x00;
eeprom_wbit = 0x00;
eeprom_rbit = 0x00;
}
else if(eeprom_cmd[3] == 0x00 && eeprom_cmd[2] == 0x20 &&
eeprom_cmd[1] == 0x60 && eeprom_cmd[0] == 0x40 && data == 0x00)
{
// reset ?
}
else if(eeprom_cmd[3] == 0x00 && eeprom_cmd[2] == 0x40 &&
eeprom_cmd[1] == 0x60 && eeprom_cmd[0] == 0x20 && data == 0x00)
{
// start
eeprom_wbit = 0x01;
eeprom_rbit = 0x01;
eeprom_data = 0;
eeprom_mode = 0;
}
else if (eeprom_cmd[0] == 0x60 && data == 0xE0)
{
if(!eeprom_mode)
{
// sync
eeprom_wbit = 0x01;
eeprom_rbit = 0x01;
eeprom_data = 0;
eeprom_mode = 1;
eeprom_status = 0x00;
//memset(serial_out, eeprom_status | barcode_status, 0x2000);
serial_out[0] = eeprom_status | barcode_status;
}
else
{
// read
eeprom_data = parent_NES->ReadSaveRAM(eeprom_addr);
if(eeprom_data & eeprom_rbit)
{
eeprom_status = 0x10;
//memset(serial_out, eeprom_status | barcode_status, 0x2000);
serial_out[0] = eeprom_status | barcode_status;
}
else
{
eeprom_status = 0x00;
//memset(serial_out, eeprom_status | barcode_status, 0x2000);
serial_out[0] = eeprom_status | barcode_status;
}
eeprom_rbit <<= 1;
eeprom_wbit = 0x00;
}
}
else if(eeprom_cmd[1] == 0x00 && eeprom_cmd[0] == 0x20 && data == 0x00)
{
// write 0
eeprom_data &= 0xFF - eeprom_wbit;
if(eeprom_wbit == 0x80)
{
if(eeprom_mode)
{
parent_NES->WriteSaveRAM(eeprom_addr, eeprom_data);
}
else
{
eeprom_addr = eeprom_data & 0x7F;
}
eeprom_wbit = 0x00;
}
else
{
eeprom_wbit <<= 1;
}
eeprom_rbit = 0x00;
}
else if(eeprom_cmd[3] == 0x00 && eeprom_cmd[2] == 0x40 &&
eeprom_cmd[1] == 0x60 && eeprom_cmd[0] == 0x40 && data == 0x00)
{
// write 1
eeprom_data |= eeprom_wbit;
if(eeprom_wbit == 0x80)
{
if(eeprom_mode)
{
parent_NES->WriteSaveRAM(eeprom_addr, eeprom_data);
}
else
{
eeprom_addr = eeprom_data & 0x7F;
}
eeprom_wbit = 0x00;
}
else
{
eeprom_wbit <<= 1;
}
eeprom_rbit = 0x00;
}
eeprom_cmd[3] = eeprom_cmd[2];
eeprom_cmd[2] = eeprom_cmd[1];
eeprom_cmd[1] = eeprom_cmd[0];
eeprom_cmd[0] = data;
}
break;
}
}
void NES_mapper65::MemoryWrite(uint32 addr, uint8 data)
{
switch(addr)
{
case 0x8000:
{
set_CPU_bank4(data);
}
break;
case 0x9000:
{
if(!patch)
{
if(data & 0x40)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
}
}
break;
case 0x9001:
{
if(patch)
{
if(data & 0x80)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
}
}
break;
case 0x9003:
{
if(!patch)
{
irq_enabled = data & 0x80;
}
}
break;
case 0x9004:
{
if(!patch)
{
irq_counter = irq_latch;
}
}
break;
case 0x9005:
{
if(patch)
{
irq_counter = (uint8)(data << 1);
irq_enabled = data;
}
else
{
irq_latch = (irq_latch & 0x00FF) | ((uint32)data << 8);
}
}
break;
case 0x9006:
{
if(patch)
{
irq_enabled = 1;
}
else
{
irq_latch = (irq_latch & 0xFF00) | data;
}
}
break;
case 0xB000:
{
set_PPU_bank0(data);
}
break;
case 0xB001:
{
set_PPU_bank1(data);
}
break;
case 0xB002:
{
set_PPU_bank2(data);
}
break;
case 0xB003:
{
set_PPU_bank3(data);
}
break;
case 0xB004:
{
set_PPU_bank4(data);
}
break;
case 0xB005:
{
set_PPU_bank5(data);
}
break;
case 0xB006:
{
set_PPU_bank6(data);
}
break;
case 0xB007:
{
set_PPU_bank7(data);
}
break;
case 0xA000:
{
set_CPU_bank5(data);
}
break;
case 0xC000:
{
set_CPU_bank6(data);
}
break;
}
}
void NES_mapper21::MemoryWrite(uint32 addr, uint8 data)
{
// regs[0] ... 1K VROM bank at PPU $0000
// regs[1] ... 1K VROM bank at PPU $0400
// regs[2] ... 1K VROM bank at PPU $0800
// regs[3] ... 1K VROM bank at PPU $0C00
// regs[4] ... 1K VROM bank at PPU $1000
// regs[5] ... 1K VROM bank at PPU $1400
// regs[6] ... 1K VROM bank at PPU $1800
// regs[7] ... 1K VROM bank at PPU $1C00
// regs[8] ... $8000 Switching Mode
switch (addr & 0xF0CF)
{
case 0x8000:
{
if(regs[8] & 0x02)
{
set_CPU_bank6(data);
}
else
{
set_CPU_bank4(data);
}
}
break;
case 0xA000:
{
set_CPU_bank5(data);
}
break;
case 0x9000:
{
data &= 0x03;
if(data == 0)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 1)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 2)
{
set_mirroring(0,0,0,0);
}
else
{
set_mirroring(1,1,1,1);
}
}
break;
case 0x9002:
case 0x9080:
{
regs[8] = data;
}
break;
case 0xB000:
{
regs[0] = (regs[0] & 0xF0) | (data & 0x0F);
set_PPU_bank0(regs[0]);
}
break;
case 0xB002:
case 0xB040:
{
regs[0] = (regs[0] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank0(regs[0]);
}
break;
case 0xB001:
case 0xB004:
case 0xB080:
{
regs[1] = (regs[1] & 0xF0) | (data & 0x0F);
set_PPU_bank1(regs[1]);
}
break;
case 0xB003:
case 0xB006:
case 0xB0C0:
{
regs[1] = (regs[1] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank1(regs[1]);
}
break;
case 0xC000:
{
regs[2] = (regs[2] & 0xF0) | (data & 0x0F);
set_PPU_bank2(regs[2]);
}
break;
case 0xC002:
case 0xC040:
{
regs[2] = (regs[2] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank2(regs[2]);
}
break;
case 0xC001:
case 0xC004:
case 0xC080:
{
regs[3] = (regs[3] & 0xF0) | (data & 0x0F);
set_PPU_bank3(regs[3]);
}
break;
case 0xC003:
case 0xC006:
case 0xC0C0:
{
regs[3] = (regs[3] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank3(regs[3]);
}
break;
case 0xD000:
{
regs[4] = (regs[4] & 0xF0) | (data & 0x0F);
set_PPU_bank4(regs[4]);
}
break;
case 0xD002:
case 0xD040:
{
regs[4] = (regs[4] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank4(regs[4]);
}
break;
case 0xD001:
case 0xD004:
case 0xD080:
{
regs[5] = (regs[5] & 0xF0) | (data & 0x0F);
set_PPU_bank5(regs[5]);
}
break;
case 0xD003:
case 0xD006:
case 0xD0C0:
{
regs[5] = (regs[5] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank5(regs[5]);
}
break;
case 0xE000:
{
regs[6] = (regs[6] & 0xF0) | (data & 0x0F);
set_PPU_bank6(regs[6]);
}
break;
case 0xE002:
case 0xE040:
{
regs[6] = (regs[6] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank6(regs[6]);
}
break;
case 0xE001:
case 0xE004:
case 0xE080:
{
regs[7] = (regs[7] & 0xF0) | (data & 0x0F);
set_PPU_bank7(regs[7]);
}
break;
case 0xE003:
case 0xE006:
case 0xE0C0:
{
regs[7] = (regs[7] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank7(regs[7]);
}
break;
case 0xF000:
{
irq_latch = (irq_latch & 0xF0) | (data & 0x0F);
}
break;
case 0xF002:
case 0xF040:
{
irq_latch = (irq_latch & 0x0F) | ((data & 0x0F) << 4);
}
break;
case 0xF003:
case 0xF0C0:
{
irq_enabled = (irq_enabled & 0x01) * 3;
}
break;
case 0xF004:
case 0xF080:
{
irq_enabled = data & 0x03;
if(irq_enabled & 0x02)
{
irq_counter = irq_latch;
}
}
break;
}
}
void NES_mapper64::MemoryWrite(uint32 addr, uint8 data)
{
switch(addr & 0xF003)
{
case 0x8000:
{
regs[0] = data & 0x0F;
regs[1] = data & 0x40;
regs[2] = data & 0x80;
}
break;
case 0x8001:
{
switch(regs[0])
{
case 0x00:
{
if(regs[2])
{
set_PPU_bank4(data+0);
set_PPU_bank5(data+1);
}
else
{
set_PPU_bank0(data+0);
set_PPU_bank1(data+1);
}
}
break;
case 0x01:
{
if(regs[2])
{
set_PPU_bank6(data+0);
set_PPU_bank7(data+1);
}
else
{
set_PPU_bank2(data+0);
set_PPU_bank3(data+1);
}
}
break;
case 0x02:
{
if(regs[2])
{
set_PPU_bank0(data);
}
else
{
set_PPU_bank4(data);
}
}
break;
case 0x03:
{
if(regs[2])
{
set_PPU_bank1(data);
}
else
{
set_PPU_bank5(data);
}
}
break;
case 0x04:
{
if(regs[2])
{
set_PPU_bank2(data);
}
else
{
set_PPU_bank6(data);
}
}
break;
case 0x05:
{
if(regs[2])
{
set_PPU_bank3(data);
}
else
{
set_PPU_bank7(data);
}
}
break;
case 0x06:
{
if(regs[1])
{
set_CPU_bank5(data);
}
else
{
set_CPU_bank4(data);
}
}
break;
case 0x07:
{
if(regs[1])
{
set_CPU_bank6(data);
}
else
{
set_CPU_bank5(data);
}
}
break;
case 0x08:
{
//if(regs[2])
//{
// set_PPU_bank5(data);
//}
//else
{
set_PPU_bank1(data);
}
}
break;
case 0x09:
{
//if(regs[2])
//{
// set_PPU_bank7(data);
//}
//else
{
set_PPU_bank3(data);
}
}
break;
case 0x0F:
{
if(regs[1])
{
set_CPU_bank4(data);
}
else
{
set_CPU_bank6(data);
}
}
break;
}
}
break;
case 0xA000:
{
if(!(data & 0x01))
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
}
break;
case 0xC000:
{
irq_latch = data;
irq_counter = irq_latch;
}
break;
case 0xC001:
{
irq_counter = irq_latch;
}
break;
case 0xE000:
{
irq_enabled = 0;
irq_counter = irq_latch;
}
break;
case 0xE001:
{
irq_enabled = 1;
irq_counter = irq_latch;
}
break;
}
}
void NES_mapper237::MemoryWrite(uint32 addr, uint8 data)
{
if(addr & 0x4000)
{
if((addr & 0x0030) == 0x00)
{
set_CPU_bank4((addr&0x07)*2+0);
set_CPU_bank5((addr&0x07)*2+1);
set_CPU_bank6(num_8k_ROM_banks-2);
set_CPU_bank7(num_8k_ROM_banks-1);
}
else if((addr & 0x0030) == 0x10)
{
for(uint32 i = 0; i < 0x2000; i++)
{
wram[i+0x0000] = ROM_banks[((addr&0x07)*2+0)*0x2000+(i&0x1ff0)+0x0d]; // 0x0b?
wram[i+0x2000] = ROM_banks[((addr&0x07)*2+1)*0x2000+(i&0x1ff0)+0x0d]; // 0x0b?
wram[i+0x4000] = ROM_banks[(num_8k_ROM_banks-2)*0x2000+(i&0x1ff0)+0x0d]; // 0x0b?
wram[i+0x6000] = ROM_banks[(num_8k_ROM_banks-1)*0x2000+(i&0x1ff0)+0x0d]; // 0x0b?
}
nes6502_context *context;
context = nes6502_get_current_context ();
context->mem_page[4] = wram + 0x0000;
context->mem_page[5] = wram + 0x2000;
context->mem_page[6] = wram + 0x4000;
context->mem_page[7] = wram + 0x6000;
nes6502_setcontext();
}
else if((addr & 0x0030) == 0x20)
{
set_CPU_bank4((addr&0x06)*2+0);
set_CPU_bank5((addr&0x06)*2+1);
set_CPU_bank6((addr&0x06)*2+2);
set_CPU_bank7((addr&0x06)*2+3);
}
else if((addr & 0x0030) == 0x30)
{
set_CPU_bank4((addr&0x07)*2+0);
set_CPU_bank5((addr&0x07)*2+1);
set_CPU_bank6((addr&0x07)*2+0);
set_CPU_bank7((addr&0x07)*2+1);
}
}
else
{
if(addr & 0x0020)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
set_PPU_bank0((addr&0x07)*8+0);
set_PPU_bank1((addr&0x07)*8+1);
set_PPU_bank2((addr&0x07)*8+2);
set_PPU_bank3((addr&0x07)*8+3);
set_PPU_bank4((addr&0x07)*8+4);
set_PPU_bank5((addr&0x07)*8+5);
set_PPU_bank6((addr&0x07)*8+6);
set_PPU_bank7((addr&0x07)*8+7);
}
}
void NES_mapper25::MemoryWrite(uint32 addr, uint8 data)
{
// regs[0] ... 1K VROM bank at PPU $0000
// regs[1] ... 1K VROM bank at PPU $0400
// regs[2] ... 1K VROM bank at PPU $0800
// regs[3] ... 1K VROM bank at PPU $0C00
// regs[4] ... 1K VROM bank at PPU $1000
// regs[5] ... 1K VROM bank at PPU $1400
// regs[6] ... 1K VROM bank at PPU $1800
// regs[7] ... 1K VROM bank at PPU $1C00
// regs[8] ... 8K ROM bank at CPU $8000
// regs[9] ... 8K ROM bank at CPU $C000
// regs[10] .. ROM Swap flag
switch(addr & 0xF000)
{
case 0x8000:
{
if(regs[10] & 0x02)
{
regs[9] = data;
set_CPU_bank6(data);
}
else
{
regs[8] = data;
set_CPU_bank4(data);
}
}
break;
case 0xA000:
{
set_CPU_bank5(data);
}
break;
}
switch(addr & 0xF00F)
{
case 0x9000:
{
data &= 0x03;
if(data == 0)
{
set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 1)
{
set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 2)
{
set_mirroring(0,0,0,0);
}
else
{
set_mirroring(1,1,1,1);
}
}
break;
case 0x9001:
case 0x9004:
{
if((regs[10] & 0x02) != (data & 0x02))
{
uint8 swap = regs[8];
regs[8] = regs[9];
regs[9] = swap;
set_CPU_bank4(regs[8]);
set_CPU_bank6(regs[9]);
}
regs[10] = data;
}
break;
case 0xB000:
{
regs[0] = (regs[0] & 0xF0) | (data & 0x0F);
set_PPU_bank0(regs[0]);
}
break;
case 0xB001:
case 0xB004:
{
regs[1] = (regs[1] & 0xF0) | (data & 0x0F);
set_PPU_bank1(regs[1]);
}
break;
case 0xB002:
case 0xB008:
{
regs[0] = (regs[0] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank0(regs[0]);
}
break;
case 0xB003:
case 0xB00C:
{
regs[1] = (regs[1] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank1(regs[1]);
}
break;
case 0xC000:
{
regs[2] = (regs[2] & 0xF0) | (data & 0x0F);
set_PPU_bank2(regs[2]);
}
break;
case 0xC001:
case 0xC004:
{
regs[3] = (regs[3] & 0xF0) | (data & 0x0F);
set_PPU_bank3(regs[3]);
}
break;
case 0xC002:
case 0xC008:
{
regs[2] = (regs[2] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank2(regs[2]);
}
break;
case 0xC003:
case 0xC00C:
{
regs[3] = (regs[3] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank3(regs[3]);
}
break;
case 0xD000:
{
regs[4] = (regs[4] & 0xF0) | (data & 0x0F);
set_PPU_bank4(regs[4]);
}
break;
case 0xD001:
case 0xD004:
{
regs[5] = (regs[5] & 0xF0) | (data & 0x0F);
set_PPU_bank5(regs[5]);
}
break;
case 0xD002:
case 0xD008:
{
regs[4] = (regs[4] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank4(regs[4]);
}
break;
case 0xD003:
case 0xD00C:
{
regs[5] = (regs[5] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank5(regs[5]);
}
break;
case 0xE000:
{
regs[6] = (regs[6] & 0xF0) | (data & 0x0F);
set_PPU_bank6(regs[6]);
}
break;
case 0xE001:
case 0xE004:
{
regs[7] = (regs[7] & 0xF0) | (data & 0x0F);
set_PPU_bank7(regs[7]);
}
break;
case 0xE002:
case 0xE008:
{
regs[6] = (regs[6] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank6(regs[6]);
}
break;
case 0xE003:
case 0xE00C:
{
regs[7] = (regs[7] & 0x0F) | ((data & 0x0F) << 4);
set_PPU_bank7(regs[7]);
}
break;
case 0xF000:
{
irq_latch = (irq_latch & 0xF0) | (data & 0x0F);
}
break;
case 0xF001:
case 0xF004:
{
irq_enabled = data & 0x03;
if(irq_enabled & 0x02)
{
irq_counter = irq_latch;
}
}
break;
case 0xF002:
case 0xF008:
{
irq_latch = (irq_latch & 0x0F) | ((data & 0x0F) << 4);
}
break;
case 0xF003:
case 0xF00C:
{
irq_enabled = (irq_enabled & 0x01) * 3;
}
break;
}
}