AxibugEmuOnline/References/VirtuaNESex_src_191105/NES/Mapper/Mapper045.cpp
2024-08-05 17:58:53 +08:00

324 lines
6.2 KiB
C++

//////////////////////////////////////////////////////////////////////////
// Mapper045 1000000-in-1 //
//////////////////////////////////////////////////////////////////////////
void Mapper045::Reset()
{
patch = 0;
for( INT i = 0; i < 8; i++ ) {
reg[i] = 0;
}
prg0 = 0;
prg1 = 1;
prg2 = PROM_8K_SIZE-2;
prg3 = PROM_8K_SIZE-1;
DWORD crc = nes->rom->GetPROM_CRC();
if( crc == 0x58bcacf6 // Kunio 8-in-1 (Pirate Cart)
|| crc == 0x9103cfd6 // HIK 7-in-1 (Pirate Cart)
|| crc == 0xc082e6d3 ) { // Super 8-in-1 (Pirate Cart)
patch = 1;
prg2 = 62;
prg3 = 63;
}
if( crc == 0xe0dd259d ) { // Super 3-in-1 (Pirate Cart)
patch = 2;
}
// if( crc == 0x155ffb0d ) { // Super 3-in-1 (Unl)
// patch = 3;
// prg2 = 46;
// prg3 = 47;
// }
SetPROM_32K_Bank( prg0, prg1, prg2, prg3 );
p[0] = prg0;
p[1] = prg1;
p[2] = prg2;
p[3] = prg3;
SetVROM_8K_Bank( 0 );
// chr0 = c[0] = 0;
// chr1 = c[1] = 0
// chr2 = c[2] = 0;
// chr3 = c[3] = 0;
// chr4 = c[4] = 0;
// chr5 = c[5] = 0;
// chr6 = c[6] = 0;
// chr7 = c[7] = 0;
chr0 = c[0] = 0;
chr1 = c[1] = 1;
chr2 = c[2] = 2;
chr3 = c[3] = 3;
chr4 = c[4] = 4;
chr5 = c[5] = 5;
chr6 = c[6] = 6;
chr7 = c[7] = 7;
irq_enable = 0;
irq_counter = 0;
irq_latch = 0;
irq_latched = 0;
irq_reset = 0;
}
void Mapper045::WriteLow( WORD addr, BYTE data )
{
// if( addr == 0x6000 ) {
// if( addr == 0x6000 && !(reg[3]&0x40) ) {
if( !(reg[3]&0x40) ) {
reg[reg[5]] = data;
reg[5] = (reg[5]+1) & 0x03;
SetBank_CPU_4( prg0 );
SetBank_CPU_5( prg1 );
SetBank_CPU_6( prg2 );
SetBank_CPU_7( prg3 );
SetBank_PPU();
}
}
void Mapper045::Write( WORD addr, BYTE data )
{
switch( addr & 0xE001 ) {
case 0x8000:
if( (data&0x40)!=(reg[6]&0x40) ) {
BYTE swp;
swp = prg0; prg0 = prg2; prg2 = swp;
swp = p[0]; p[0] = p[2]; p[2] = swp;
SetBank_CPU_4( p[0] );
SetBank_CPU_5( p[1] );
}
if( VROM_1K_SIZE ) {
if( (data&0x80)!=(reg[6]&0x80) ) {
INT swp;
swp = chr4; chr4 = chr0; chr0 = swp;
swp = chr5; chr5 = chr1; chr1 = swp;
swp = chr6; chr6 = chr2; chr2 = swp;
swp = chr7; chr7 = chr3; chr3 = swp;
swp = c[4]; c[4] = c[0]; c[0] = swp;
swp = c[5]; c[5] = c[1]; c[1] = swp;
swp = c[6]; c[6] = c[2]; c[2] = swp;
swp = c[7]; c[7] = c[3]; c[3] = swp;
SetVROM_8K_Bank( c[0],c[1],c[2],c[3],c[4],c[5],c[6],c[7] );
}
}
reg[6] = data;
break;
case 0x8001:
switch( reg[6] & 0x07 ) {
case 0x00:
chr0 = (data & 0xFE)+0;
chr1 = (data & 0xFE)+1;
SetBank_PPU();
break;
case 0x01:
chr2 = (data & 0xFE)+0;
chr3 = (data & 0xFE)+1;
SetBank_PPU();
break;
case 0x02:
chr4 = data;
SetBank_PPU();
break;
case 0x03:
chr5 = data;
SetBank_PPU();
break;
case 0x04:
chr6 = data;
SetBank_PPU();
break;
case 0x05:
chr7 = data;
SetBank_PPU();
break;
case 0x06:
if( reg[6] & 0x40 ) {
prg2 = data & 0x3F;
SetBank_CPU_6( data );
} else {
prg0 = data & 0x3F;
SetBank_CPU_4( data );
}
break;
case 0x07:
prg1 = data & 0x3F;
SetBank_CPU_5( data );
break;
}
break;
case 0xA000:
if( data & 0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
case 0xC000:
if( patch == 2 ) {
if( data == 0x29 || data == 0x70 )
data = 0x07;
}
irq_latch = data;
irq_latched = 1;
if( irq_reset ) {
irq_counter = data;
irq_latched = 0;
}
// irq_counter = data;
break;
case 0xC001:
// irq_latch = data;
irq_counter = irq_latch;
break;
case 0xE000:
irq_enable = 0;
irq_reset = 1;
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0xE001:
irq_enable = 1;
if( irq_latched ) {
irq_counter = irq_latch;
}
break;
}
}
void Mapper045::HSync( INT scanline )
{
irq_reset = 0;
if( (scanline >= 0 && scanline <= 239) && nes->ppu->IsDispON() ) {
if( irq_counter ) {
irq_counter--;
if( irq_counter == 0 ) {
if( irq_enable ) {
nes->cpu->SetIRQ( IRQ_MAPPER );
}
}
}
}
}
void Mapper045::SetBank_CPU_4( INT data )
{
data &= (reg[3] & 0x3F) ^ 0xFF;
data &= 0x3F;
data |= reg[1];
SetPROM_8K_Bank( 4, data );
p[0] = data;
}
void Mapper045::SetBank_CPU_5( INT data )
{
data &= (reg[3] & 0x3F) ^ 0xFF;
data &= 0x3F;
data |= reg[1];
SetPROM_8K_Bank( 5, data );
p[1] = data;
}
void Mapper045::SetBank_CPU_6( INT data )
{
data &= (reg[3] & 0x3F) ^ 0xFF;
data &= 0x3F;
data |= reg[1];
SetPROM_8K_Bank( 6, data );
p[2] = data;
}
void Mapper045::SetBank_CPU_7( INT data )
{
data &= (reg[3] & 0x3F) ^ 0xFF;
data &= 0x3F;
data |= reg[1];
SetPROM_8K_Bank( 7, data );
p[3] = data;
}
void Mapper045::SetBank_PPU()
{
BYTE table[16] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x01,0x03,0x07,0x0F,0x1F,0x3F,0x7F,0xFF
};
c[0] = chr0;
c[1] = chr1;
c[2] = chr2;
c[3] = chr3;
c[4] = chr4;
c[5] = chr5;
c[6] = chr6;
c[7] = chr7;
for( INT i = 0; i < 8; i++ ) {
c[i] &= table[reg[2] & 0x0F];
c[i] |= reg[0] & ((patch!=1)?0xFF:0xC0);
c[i] += (reg[2] & ((patch!=1)?0x10:0x30))<<4;
}
if( reg[6] & 0x80 ) {
SetVROM_8K_Bank( c[4], c[5], c[6], c[7], c[0], c[1], c[2], c[3] );
} else {
SetVROM_8K_Bank( c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7] );
}
}
void Mapper045::SaveState( LPBYTE ps )
{
INT i;
for( i = 0; i < 8; i++ ) {
ps[i] = reg[i];
}
for( i = 0; i < 4; i++ ) {
ps[i+8] = p[i];
}
for( i = 0; i < 8; i++ ) {
*(INT*)&ps[i*4+64] = c[i];
}
ps[20] = prg0;
ps[21] = prg1;
ps[22] = prg2;
ps[23] = prg3;
ps[24] = chr0;
ps[25] = chr1;
ps[26] = chr2;
ps[27] = chr3;
ps[28] = chr4;
ps[29] = chr5;
ps[30] = chr6;
ps[31] = chr7;
ps[32] = irq_enable;
ps[33] = irq_counter;
ps[34] = irq_latch;
}
void Mapper045::LoadState( LPBYTE ps )
{
INT i;
for( i = 0; i < 8; i++ ) {
reg[i] = ps[i];
}
for( i = 0; i < 4; i++ ) {
p[i] = ps[i+8];
}
for( i = 0; i < 8; i++ ) {
c[i] = *(INT*)&ps[i*4+64];
}
prg0 = ps[20];
prg1 = ps[21];
prg2 = ps[22];
prg3 = ps[23];
chr0 = ps[24];
chr1 = ps[25];
chr2 = ps[26];
chr3 = ps[27];
chr4 = ps[28];
chr5 = ps[29];
chr6 = ps[30];
chr7 = ps[31];
irq_enable = ps[32];
irq_counter = ps[33];
irq_latch = ps[34];
}