//////////////////////////////////////////////////////////////////////////
// Mapper019 Namcot 106 //
//////////////////////////////////////////////////////////////////////////
using static VirtualNes.Core.CPU;
using static VirtualNes.MMU;
using BYTE = System.Byte;
namespace VirtualNes.Core
{
public class Mapper019 : Mapper
{
BYTE patch;
BYTE exsound_enable;
BYTE[] reg = new byte[3];
BYTE[] exram = new byte[128];
BYTE irq_enable;
ushort irq_counter;
public Mapper019(NES parent) : base(parent)
{
}
public override void Reset()
{
patch = 0;
reg[0] = reg[1] = reg[2] = 0;
MemoryUtility.ZEROMEMORY(exram, exram.Length);
irq_enable = 0;
irq_counter = 0;
SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
if (VROM_1K_SIZE >= 8)
{
SetVROM_8K_Bank(VROM_8K_SIZE - 1);
}
exsound_enable = 0xFF;
uint crc = nes.rom.GetPROM_CRC();
if (crc == 0xb62a7b71)
{ // Family Circuit '91(J)
patch = 1;
}
if (crc == 0x02738c68)
{ // Wagan Land 2(J)
patch = 3;
}
if (crc == 0x14942c06)
{ // Wagan Land 3(J)
patch = 2;
}
if (crc == 0x968dcf09)
{ // Final Lap(J)
nes.SetRenderMethod(EnumRenderMethod.PRE_ALL_RENDER);
}
if (crc == 0x3deac303)
{ // Rolling Thunder(J)
nes.SetRenderMethod(EnumRenderMethod.POST_ALL_RENDER);
}
if (crc == 0xb1b9e187)
{ // For Kaijuu Monogatari(J)
nes.SetRenderMethod(EnumRenderMethod.POST_ALL_RENDER);
}
if (crc == 0x6901346e)
{ // For Sangokushi 2 - Haou no Tairiku(J)
nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER);
}
// if( crc == 0xdd454208 ) { // Hydlide 3(J)
// nes.SetRenderMethod( NES::PRE_ALL_RENDER );
// }
if (crc == 0xaf15338f // For Mindseeker(J)
|| crc == 0xb1b9e187 // For Kaijuu Monogatari(J)
|| crc == 0x96533999 // Dokuganryuu Masamune(J)
// || crc == 0x2b825ce1 // Namco Classic(J)
// || crc == 0x9a2b0641 // Namco Classic 2(J)
|| crc == 0x3296ff7a // Battle Fleet(J)
|| crc == 0xdd454208)
{ // Hydlide 3(J)
exsound_enable = 0;
}
if (crc == 0x429fd177)
{ // Famista '90(J)
exsound_enable = 0;
}
if (exsound_enable != 0)
{
nes.apu.SelectExSound(0x10);
}
}
//BYTE Mapper019::ReadLow(WORD addr)
public override byte ReadLow(ushort addr)
{
BYTE data = 0;
switch (addr & 0xF800)
{
case 0x4800:
if (addr == 0x4800)
{
if (exsound_enable != 0)
{
nes.apu.ExRead(addr);
data = exram[reg[2] & 0x7F];
}
else
{
data = WRAM[reg[2] & 0x7F];
}
if ((reg[2] & 0x80) != 0)
reg[2] = (byte)((reg[2] + 1) | 0x80);
return data;
}
break;
case 0x5000:
return (byte)((BYTE)irq_counter & 0x00FF);
case 0x5800:
return (BYTE)((irq_counter >> 8) & 0x7F);
case 0x6000:
case 0x6800:
case 0x7000:
case 0x7800:
return base.ReadLow(addr);
}
return (BYTE)(addr >> 8);
}
//void Mapper019::WriteLow(WORD addr, BYTE data)
public override void WriteLow(ushort addr, byte data)
{
switch (addr & 0xF800)
{
case 0x4800:
if (addr == 0x4800)
{
if (exsound_enable != 0)
{
nes.apu.ExWrite(addr, data);
exram[reg[2] & 0x7F] = data;
}
else
{
WRAM[reg[2] & 0x7F] = data;
}
if ((reg[2] & 0x80) != 0)
reg[2] = (byte)((reg[2] + 1) | 0x80);
}
break;
case 0x5000:
irq_counter = (byte)((irq_counter & 0xFF00) | (ushort)data);
// if( irq_enable ) {
// irq_counter++;
// }
nes.cpu.ClrIRQ(IRQ_MAPPER);
break;
case 0x5800:
irq_counter = (byte)((irq_counter & 0x00FF) | ((ushort)(data & 0x7F) << 8));
irq_enable = (byte)(data & 0x80);
// if( irq_enable ) {
// irq_counter++;
// }
// if( !irq_enable ) {
// nes.cpu.ClrIRQ( IRQ_MAPPER );
// }
nes.cpu.ClrIRQ(IRQ_MAPPER);
break;
case 0x6000:
case 0x6800:
case 0x7000:
case 0x7800:
base.WriteLow(addr, data);
break;
}
}
//void Mapper019::Write(WORD addr, BYTE data)
public override void Write(ushort addr, byte data)
{
//if( addr >= 0xC000 ) {
//DEBUGOUT( "W %04X %02X L:%3d\n", addr, data, nes.GetScanline() );
//}
switch (addr & 0xF800)
{
case 0x8000:
if ((data < 0xE0) || (reg[0] != 0))
{
SetVROM_1K_Bank(0, data);
}
else
{
SetCRAM_1K_Bank(0, data & 0x1F);
}
break;
case 0x8800:
if ((data < 0xE0) || (reg[0] != 0))
{
SetVROM_1K_Bank(1, data);
}
else
{
SetCRAM_1K_Bank(1, data & 0x1F);
}
break;
case 0x9000:
if ((data < 0xE0) || (reg[0] != 0))
{
SetVROM_1K_Bank(2, data);
}
else
{
SetCRAM_1K_Bank(2, data & 0x1F);
}
break;
case 0x9800:
if ((data < 0xE0) || (reg[0] != 0))
{
SetVROM_1K_Bank(3, data);
}
else
{
SetCRAM_1K_Bank(3, data & 0x1F);
}
break;
case 0xA000:
if ((data < 0xE0) || (reg[1] != 0))
{
SetVROM_1K_Bank(4, data);
}
else
{
SetCRAM_1K_Bank(4, data & 0x1F);
}
break;
case 0xA800:
if ((data < 0xE0) || (reg[1] != 0))
{
SetVROM_1K_Bank(5, data);
}
else
{
SetCRAM_1K_Bank(5, data & 0x1F);
}
break;
case 0xB000:
if ((data < 0xE0) || (reg[1] != 0))
{
SetVROM_1K_Bank(6, data);
}
else
{
SetCRAM_1K_Bank(6, data & 0x1F);
}
break;
case 0xB800:
if ((data < 0xE0) || (reg[1] != 0))
{
SetVROM_1K_Bank(7, data);
}
else
{
SetCRAM_1K_Bank(7, data & 0x1F);
}
break;
case 0xC000:
if (patch == 0)
{
if (data <= 0xDF)
{
SetVROM_1K_Bank(8, data);
}
else
{
SetVRAM_1K_Bank(8, data & 0x01);
}
}
break;
case 0xC800:
if (patch == 0)
{
if (data <= 0xDF)
{
SetVROM_1K_Bank(9, data);
}
else
{
SetVRAM_1K_Bank(9, data & 0x01);
}
}
break;
case 0xD000:
if (patch == 0)
{
if (data <= 0xDF)
{
SetVROM_1K_Bank(10, data);
}
else
{
SetVRAM_1K_Bank(10, data & 0x01);
}
}
break;
case 0xD800:
if (patch == 0)
{
if (data <= 0xDF)
{
SetVROM_1K_Bank(11, data);
}
else
{
SetVRAM_1K_Bank(11, data & 0x01);
}
}
break;
case 0xE000:
SetPROM_8K_Bank(4, data & 0x3F);
if (patch == 2)
{
if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
else SetVRAM_Mirror(VRAM_MIRROR4L);
}
if (patch == 3)
{
if ((data & 0x80) != 0) SetVRAM_Mirror(VRAM_HMIRROR);
else SetVRAM_Mirror(VRAM_VMIRROR);
}
break;
case 0xE800:
reg[0] = (byte)(data & 0x40);
reg[1] = (byte)(data & 0x80);
SetPROM_8K_Bank(5, data & 0x3F);
break;
case 0xF000:
SetPROM_8K_Bank(6, data & 0x3F);
break;
case 0xF800:
if (addr == 0xF800)
{
if (exsound_enable != 0)
{
nes.apu.ExWrite(addr, data);
}
reg[2] = data;
}
break;
}
}
//void Mapper019::Clock(INT cycles)
public override void Clock(int cycles)
{
if (irq_enable != 0)
{
irq_counter = (ushort)(irq_counter + cycles);
if (irq_counter >= 0x7FFF)
{
// irq_counter = 0x7FFF;
// nes.cpu.IRQ_NotPending();
irq_enable = 0;
// irq_counter &= 0x7FFF;
irq_counter = 0x7FFF;
nes.cpu.SetIRQ(IRQ_MAPPER);
}
}
}
//void Mapper019::SaveState(LPBYTE p)
public override void SaveState(byte[] p)
{
// p[0] = reg[0];
// p[1] = reg[1];
// p[2] = reg[2];
// p[3] = irq_enable;
// *(WORD*)&p[4] = irq_counter;
//::memcpy(&p[8], exram, sizeof(exram));
}
//void Mapper019::LoadState(LPBYTE p)
public override void LoadState(byte[] p)
{
// reg[0] = p[0];
// reg[1] = p[1];
// reg[2] = p[2];
// irq_enable = p[3];
// irq_counter = *(WORD*)&p[4];
//::memcpy(exram, &p[8], sizeof(exram));
}
public override bool IsStateSave()
{
return true;
}
}
}