AxibugEmuOnline/References/VirtuaNESex_src_191105/NES/Mapper/Mapper116_old.cpp

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2024-08-05 17:58:53 +08:00
//////////////////////////////////////////////////////////////////////////
// Mapper116 CartSaint : <20>H<EFBFBD>VAV<41><56><EFBFBD><EFBFBD><EFBFBD>` //
//////////////////////////////////////////////////////////////////////////
void Mapper116::Reset()
{
/*
for( INT i = 0; i < 8; i++ ) {
reg[i] = 0x00;
}
prg0 = prg0L = 0;
prg1 = prg1L = 1;
prg2 = PROM_8K_SIZE-2;
prg3 = PROM_8K_SIZE-1;
ExPrgSwitch = 0;
ExChrSwitch = 0;
SetBank_CPU();
if( VROM_1K_SIZE ) {
chr0 = 0;
chr1 = 1;
chr2 = 2;
chr3 = 3;
chr4 = 4;
chr5 = 5;
chr6 = 6;
chr7 = 7;
SetBank_PPU();
} else {
chr0 = chr2 = chr4 = chr5 = chr6 = chr7 = 0;
chr1 = chr3 = 1;
}
irq_enable = 0; // Disable
irq_counter = 0;
irq_latch = 0;
// nes->SetFrameIRQmode( FALSE );
*/
mode = 0;
vrc2_chr[0] = 0;
vrc2_chr[1] = 1;
vrc2_chr[2] = 2;
vrc2_chr[3] = 3;
vrc2_chr[4] = 4;
vrc2_chr[5] = 5;
vrc2_chr[6] = 6;
vrc2_chr[7] = 7;
vrc2_prg[0] = 0;
vrc2_prg[1] = 1;
vrc2_mirr = 0;
mmc3_regs[0] = 0;
mmc3_regs[1] = 2;
mmc3_regs[2] = 4;
mmc3_regs[3] = 5;
mmc3_regs[4] = 6;
mmc3_regs[5] = 7;
mmc3_regs[6] = 0x3C;
mmc3_regs[7] = 0x3D;
mmc3_regs[8] = 0xFE;
mmc3_regs[9] = 0xFF;
mmc3_ctrl = mmc3_mirr = 0;
IRQCount = IRQLatch = IRQa = 0;
mmc1_regs[0] = 0xc;
mmc1_regs[1] = 0;
mmc1_regs[2] = 0;
mmc1_regs[3] = 0;
mmc1_buffer = 0;
mmc1_shift = 0;
SetBank_CPU();
SetBank_PPU();
SetBank_MIR();
}
void Mapper116::WriteLow( WORD addr, BYTE data )
{
DEBUGOUT( "MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr&0xFFFF, data&0xFF, nes->GetScanline(), nes->cpu->GetTotalCycles() );
/*
if( (addr & 0x4100) == 0x4100 ) {
ExChrSwitch = data;
SetBank_PPU();
}
*/
if ((addr&0x4100)==0x4100) {
mode = data;
if (addr&1) {
mmc1_regs[0] = 0xc;
mmc1_regs[3] = 0;
mmc1_buffer = 0;
mmc1_shift = 0;
}
// if ((data&0x3)!=1)
// {
// IRQCount = IRQLatch;
// IRQa = 0;
// nes->cpu->ClrIRQ( IRQ_MAPPER );
// }
SetBank_CPU();
SetBank_PPU();
SetBank_MIR();
}
}
void Mapper116::Write( WORD addr, BYTE data )
{
DEBUGOUT( "MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr&0xFFFF, data&0xFF, nes->GetScanline(), nes->cpu->GetTotalCycles() );
/*
switch( addr & 0xE001 ) {
case 0x8000:
reg[0] = data;
SetBank_CPU();
SetBank_PPU();
break;
case 0x8001:
reg[1] = data;
switch( reg[0] & 0x07 ) {
case 0x00:
chr0 = data & 0xFE;
chr1 = chr0+1;
SetBank_PPU();
break;
case 0x01:
chr2 = data & 0xFE;
chr3 = chr2+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:
prg0 = data;
SetBank_CPU();
break;
case 0x07:
prg1 = data;
SetBank_CPU();
break;
}
break;
case 0xA000:
reg[2] = data;
if( !nes->rom->Is4SCREEN() ) {
if( data & 0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
}
break;
case 0xA001:
reg[3] = data;
break;
case 0xC000:
reg[4] = data;
irq_counter = data;
// irq_enable = 0xFF;
break;
case 0xC001:
reg[5] = data;
irq_latch = data;
break;
case 0xE000:
reg[6] = data;
irq_counter = irq_latch;
irq_enable = 0;
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0xE001:
reg[7] = data;
irq_enable = 0xFF;
break;
}
*/
switch (mode & 3) {
case 0: {
if ((addr >= 0xB000) && (addr <= 0xE003)) {
int32 ind = ((((addr & 2) | (addr >> 10)) >> 1) + 2) & 7;
int32 sar = ((addr & 1) << 2);
vrc2_chr[ind] = (vrc2_chr[ind] & (0xF0 >> sar)) | ((data & 0x0F) << sar);
SetBank_PPU();
} else
switch (addr & 0xF000) {
case 0x8000: vrc2_prg[0] = data; SetBank_CPU(); break;
case 0xA000: vrc2_prg[1] = data; SetBank_CPU(); break;
case 0x9000: vrc2_mirr = data; SetBank_MIR(); break;
}
break;
}
case 1: {
switch (addr & 0xE001) {
case 0x8000:
// uint8 old_ctrl = mmc3_ctrl;
// mmc3_ctrl = data;
// if ((old_ctrl & 0x40) != (mmc3_ctrl & 0x40))
// SetBank_CPU();
// if ((old_ctrl & 0x80) != (mmc3_ctrl & 0x80))
// SetBank_PPU();
addr = mmc3_ctrl ^ data;
mmc3_ctrl = data;
if (addr & 0x40)
SetBank_CPU();
if (addr & (0x80|0x07))
SetBank_PPU();
break;
case 0x8001:
// mmc3_regs[mmc3_ctrl & 7] = data;
// if ((mmc3_ctrl & 7) < 6)
// SetBank_PPU();
// else
// SetBank_CPU();
addr = mmc3_ctrl & 0x7;
if (addr<2) data>>= 1;
if (mmc3_regs[addr] != data)
{
mmc3_regs[addr] = data;
if (addr<6)
SetBank_PPU();
else
SetBank_CPU();
}
break;
case 0xA000:
mmc3_mirr = data;
SetBank_MIR();
break;
case 0xC000:
IRQCount = data;
break;
case 0xC001:
IRQLatch = data;
break;
case 0xE000:
IRQCount = IRQLatch;
IRQa = 0;
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0xE001:
IRQa = 0xFF;
break;
}
break;
}
case 2:
case 3: {
if (data & 0x80) {
mmc1_regs[0] |= 0xc;
mmc1_buffer = mmc1_shift = 0;
SetBank_CPU();
} else {
uint8 n = (addr >> 13) - 4;
mmc1_buffer |= (data & 1) << (mmc1_shift++);
if (mmc1_shift == 5) {
mmc1_regs[n] = mmc1_buffer;
mmc1_buffer = mmc1_shift = 0;
switch (n) {
case 0: SetBank_MIR();
case 2: SetBank_PPU();
case 3:
case 1: SetBank_CPU();
}
}
}
break;
}
}
}
void Mapper116::HSync( INT scanline )
{
/*
if( (scanline >= 0 && scanline <= 239) ) {
if ((mode & 3) == 1) {
int32 count = IRQCount;
if (!count || IRQReload) {
IRQCount = IRQLatch;
IRQReload = 0;
} else
IRQCount--;
if (!IRQCount) {
if (IRQa)
nes->cpu->SetIRQ( IRQ_MAPPER );
}
}
}
*/
if( (scanline >= 0 && scanline <= 239) ) {
if( IRQCount <= 0 ) {
if( IRQa ) {
nes->cpu->SetIRQ( IRQ_MAPPER );
return;
}
}
if(nes->ppu->IsDispON() ) {
IRQCount--;
}
}
}
/*
void Mapper116::HSync( INT scanline )
{
if( (scanline >= 0 && scanline <= 239) ) {
if( irq_counter <= 0 ) {
if( irq_enable ) {
// nes->cpu->IRQ_NotPending();
nes->cpu->SetIRQ( IRQ_MAPPER );
#if 0
DEBUGOUT( "IRQ L=%3d\n", scanline );
{
LPBYTE lpScn = nes->ppu->GetScreenPtr();
lpScn = lpScn+(256+16)*scanline;
for( INT i = 0; i < 64; i++ ) {
lpScn[i] = 22;
}
}
#endif
return;
}
}
if( nes->ppu->IsDispON() ) {
irq_counter--;
}
}
#if 0
if( (scanline >= 0 && scanline <= 239) ) {
if( nes->ppu->IsDispON() ) {
if( irq_enable ) {
if( !(irq_counter--) ) {
// irq_counter = irq_latch;
nes->cpu->IRQ_NotPending();
}
}
}
}
#endif
}
void Mapper116::SetBank_CPU()
{
if( reg[0] & 0x40 ) {
SetPROM_32K_Bank( PROM_8K_SIZE-2, prg1, prg0, PROM_8K_SIZE-1 );
} else {
SetPROM_32K_Bank( prg0, prg1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
}
}
void Mapper116::SetBank_PPU()
{
if( VROM_1K_SIZE ) {
if( ExChrSwitch & 0x04 ) {
INT chrbank = 256;
SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5,
chrbank+chr6, chrbank+chr7,
chr0, chr1,
chr2, chr3 );
} else {
INT chrbank = 0;
SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5,
chrbank+chr6, chrbank+chr7,
chr0, chr1,
chr2, chr3 );
}
#if 0
if( reg[0] & 0x80 ) {
// SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5,
// chrbank+chr6, chrbank+chr7,
// chrbank+chr0, chrbank+chr1,
// chrbank+chr2, chrbank+chr3 );
SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5,
chrbank+chr6, chrbank+chr7,
chr0, chr1,
chr2, chr3 );
} else {
SetVROM_8K_Bank( chr0, chr1,
chr2, chr3,
chrbank+chr4, chrbank+chr5,
chrbank+chr6, chrbank+chr7 );
}
#endif
}
}
*/
void Mapper116::SetBank_CPU()
{
switch (mode & 3) {
case 0:
SetPROM_8K_Bank(4, vrc2_prg[0]);
SetPROM_8K_Bank(5, vrc2_prg[1]);
SetPROM_8K_Bank(6, 0x1E);
SetPROM_8K_Bank(7, 0x1F);
break;
case 1:
{
uint32 swap = (mmc3_ctrl >> 5) & 2;
SetPROM_8K_Bank(4, mmc3_regs[6 + swap]);
SetPROM_8K_Bank(5, mmc3_regs[7]);
SetPROM_8K_Bank(6, mmc3_regs[6 + (swap^2)]);
SetPROM_8K_Bank(7, mmc3_regs[9]);
break;
}
case 2:
case 3:
{
uint8 bank = mmc1_regs[3] & 0xF;
if (mmc1_regs[0] & 8) {
if (mmc1_regs[0] & 4) {
SetPROM_16K_Bank(4, bank);
SetPROM_16K_Bank(6, 0x0F);
} else {
SetPROM_16K_Bank(4, 0);
SetPROM_16K_Bank(6, bank);
}
} else
SetPROM_32K_Bank(bank>>1);
break;
}
}
}
void Mapper116::SetBank_PPU()
{
uint32 base = (mode & 4) << 6;
switch (mode & 3) {
case 0:
SetVROM_1K_Bank(0, base | vrc2_chr[0]);
SetVROM_1K_Bank(1, base | vrc2_chr[1]);
SetVROM_1K_Bank(2, base | vrc2_chr[2]);
SetVROM_1K_Bank(3, base | vrc2_chr[3]);
SetVROM_1K_Bank(4, base | vrc2_chr[4]);
SetVROM_1K_Bank(5, base | vrc2_chr[5]);
SetVROM_1K_Bank(6, base | vrc2_chr[6]);
SetVROM_1K_Bank(7, base | vrc2_chr[7]);
break;
case 1: {
uint32 swap = (mmc3_ctrl & 0x80) << 5;
// SetVROM_1K_Bank(((0x0000^swap)/0x400)+0, base | ((mmc3_regs[0]) & 0xFE));
// SetVROM_1K_Bank(((0x0400^swap)/0x400)+1, base | (mmc3_regs[0] | 1));
// SetVROM_1K_Bank(((0x0800^swap)/0x400)+2, base | ((mmc3_regs[1]) & 0xFE));
// SetVROM_1K_Bank(((0x0c00^swap)/0x400)+3, base | (mmc3_regs[1] | 1));
// SetVROM_1K_Bank(((0x1000^swap)/0x400)+4, base | mmc3_regs[2]);
// SetVROM_1K_Bank(((0x1400^swap)/0x400)+5, base | mmc3_regs[3]);
// SetVROM_1K_Bank(((0x1800^swap)/0x400)+6, base | mmc3_regs[4]);
// SetVROM_1K_Bank(((0x1c00^swap)/0x400)+7, base | mmc3_regs[5]);
SetVROM_2K_Bank(((0x0000^swap)>>10)+0,base >> 1 | mmc3_regs[0]);
SetVROM_2K_Bank(((0x0000^swap)>>10)+2,base >> 1 | mmc3_regs[1]);
SetVROM_1K_Bank(((0x1000^swap)>>10)+0,base|mmc3_regs[2]);
SetVROM_1K_Bank(((0x1000^swap)>>10)+1,base|mmc3_regs[3]);
SetVROM_1K_Bank(((0x1000^swap)>>10)+2,base|mmc3_regs[4]);
SetVROM_1K_Bank(((0x1000^swap)>>10)+3,base|mmc3_regs[5]);
break;
}
case 2:
case 3:
if (mmc1_regs[0] & 0x10) {
SetVROM_4K_Bank(0, mmc1_regs[1]);
SetVROM_4K_Bank(4, mmc1_regs[2]);
} else
SetVROM_8K_Bank(mmc1_regs[1] >> 1);
break;
}
}
void Mapper116::SetBank_MIR()
{
switch (mode & 3) {
case 0: {
if(vrc2_mirr&0x01) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
break;
}
case 1: {
if(mmc3_mirr&0x01) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
}
case 2:
case 3: {
switch (mmc1_regs[0] & 3) {
case 0: SetVRAM_Mirror( VRAM_MIRROR4L ); break;
case 1: SetVRAM_Mirror( VRAM_MIRROR4H ); break;
case 2: SetVRAM_Mirror( VRAM_VMIRROR ); break;
case 3: SetVRAM_Mirror( VRAM_HMIRROR ); break;
}
break;
}
}
}
void Mapper116::SaveState( LPBYTE p )
{
for( INT i = 0; i < 8; i++ ) {
p[i] = reg[i];
}
p[ 8] = prg0;
p[ 9] = prg1;
p[10] = prg2;
p[11] = prg3;
p[12] = chr0;
p[13] = chr1;
p[14] = chr2;
p[15] = chr3;
p[16] = chr4;
p[17] = chr5;
p[18] = chr6;
p[19] = chr7;
p[20] = irq_enable;
p[21] = irq_counter;
p[22] = irq_latch;
p[23] = ExPrgSwitch;
p[24] = prg0L;
p[25] = prg1L;
p[26] = ExChrSwitch;
}
void Mapper116::LoadState( LPBYTE p )
{
for( INT i = 0; i < 8; i++ ) {
reg[i] = p[i];
}
prg0 = p[ 8];
prg1 = p[ 9];
prg2 = p[10];
prg3 = p[11];
chr0 = p[12];
chr1 = p[13];
chr2 = p[14];
chr3 = p[15];
chr4 = p[16];
chr5 = p[17];
chr6 = p[18];
chr7 = p[19];
irq_enable = p[20];
irq_counter = p[21];
irq_latch = p[22];
ExPrgSwitch = p[23];
prg0L = p[24];
prg1L = p[25];
ExChrSwitch = p[26];
}