417 lines
8.2 KiB
C#
417 lines
8.2 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper019 Namcot 106 //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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using static VirtualNes.Core.CPU;
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using INT = System.Int32;
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using BYTE = System.Byte;
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using Codice.CM.Client.Differences;
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namespace VirtualNes.Core
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{
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public class Mapper019 : Mapper
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{
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BYTE patch;
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BYTE exsound_enable;
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BYTE[] reg = new byte[3];
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BYTE[] exram = new byte[128];
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BYTE irq_enable;
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ushort irq_counter;
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public Mapper019(NES parent) : base(parent)
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{
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}
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public override void Reset()
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{
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patch = 0;
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reg[0] = reg[1] = reg[2] = 0;
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::memset(exram, 0, sizeof(exram));
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irq_enable = 0;
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irq_counter = 0;
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SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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if (VROM_1K_SIZE >= 8)
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{
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SetVROM_8K_Bank(VROM_8K_SIZE - 1);
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}
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exsound_enable = 0xFF;
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uint crc = nes.rom.GetPROM_CRC();
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if (crc == 0xb62a7b71)
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{ // Family Circuit '91(J)
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patch = 1;
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}
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if (crc == 0x02738c68)
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{ // Wagan Land 2(J)
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patch = 3;
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}
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if (crc == 0x14942c06)
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{ // Wagan Land 3(J)
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patch = 2;
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}
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if (crc == 0x968dcf09)
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{ // Final Lap(J)
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nes.SetRenderMethod(EnumRenderMethod.PRE_ALL_RENDER);
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}
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if (crc == 0x3deac303)
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{ // Rolling Thunder(J)
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nes.SetRenderMethod(EnumRenderMethod.POST_ALL_RENDER);
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}
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if (crc == 0xb1b9e187)
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{ // For Kaijuu Monogatari(J)
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nes.SetRenderMethod(EnumRenderMethod.POST_ALL_RENDER);
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}
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if (crc == 0x6901346e)
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{ // For Sangokushi 2 - Haou no Tairiku(J)
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nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER);
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}
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// if( crc == 0xdd454208 ) { // Hydlide 3(J)
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// nes.SetRenderMethod( NES::PRE_ALL_RENDER );
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// }
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if (crc == 0xaf15338f // For Mindseeker(J)
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|| crc == 0xb1b9e187 // For Kaijuu Monogatari(J)
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|| crc == 0x96533999 // Dokuganryuu Masamune(J)
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// || crc == 0x2b825ce1 // Namco Classic(J)
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// || crc == 0x9a2b0641 // Namco Classic 2(J)
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|| crc == 0x3296ff7a // Battle Fleet(J)
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|| crc == 0xdd454208)
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{ // Hydlide 3(J)
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exsound_enable = 0;
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}
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if (crc == 0x429fd177)
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{ // Famista '90(J)
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exsound_enable = 0;
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}
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if (exsound_enable != 0)
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{
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nes.apu.SelectExSound(0x10);
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}
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}
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//BYTE Mapper019::ReadLow(WORD addr)
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public override byte ReadLow(ushort addr)
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{
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BYTE data = 0;
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switch (addr & 0xF800)
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{
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case 0x4800:
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if (addr == 0x4800)
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{
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if (exsound_enable != 0)
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{
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nes.apu.ExRead(addr);
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data = exram[reg[2] & 0x7F];
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}
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else
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{
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data = WRAM[reg[2] & 0x7F];
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}
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if ((reg[2] & 0x80) != 0)
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reg[2] = (byte)((reg[2] + 1) | 0x80);
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return data;
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}
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break;
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case 0x5000:
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return (byte)((BYTE)irq_counter & 0x00FF);
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case 0x5800:
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return (BYTE)((irq_counter >> 8) & 0x7F);
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case 0x6000:
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case 0x6800:
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case 0x7000:
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case 0x7800:
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return base.ReadLow(addr);
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}
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return (BYTE)(addr >> 8);
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}
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//void Mapper019::WriteLow(WORD addr, BYTE data)
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public override void WriteLow(ushort addr, byte data)
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{
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switch (addr & 0xF800)
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{
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case 0x4800:
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if (addr == 0x4800)
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{
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if (exsound_enable != 0)
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{
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nes.apu.ExWrite(addr, data);
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exram[reg[2] & 0x7F] = data;
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}
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else
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{
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WRAM[reg[2] & 0x7F] = data;
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}
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if ((reg[2] & 0x80) != 0)
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reg[2] = (byte)((reg[2] + 1) | 0x80);
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}
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break;
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case 0x5000:
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irq_counter = (byte)((irq_counter & 0xFF00) | (ushort)data);
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// if( irq_enable ) {
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// irq_counter++;
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// }
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nes.cpu.ClrIRQ(IRQ_MAPPER);
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break;
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case 0x5800:
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irq_counter = (byte)((irq_counter & 0x00FF) | ((ushort)(data & 0x7F) << 8));
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irq_enable = (byte)(data & 0x80);
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// if( irq_enable ) {
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// irq_counter++;
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// }
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// if( !irq_enable ) {
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// nes.cpu.ClrIRQ( IRQ_MAPPER );
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// }
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nes.cpu.ClrIRQ(IRQ_MAPPER);
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break;
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case 0x6000:
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case 0x6800:
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case 0x7000:
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case 0x7800:
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base.WriteLow(addr, data);
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break;
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}
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}
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//void Mapper019::Write(WORD addr, BYTE data)
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public override void Write(ushort addr, byte data)
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{
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//if( addr >= 0xC000 ) {
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//DEBUGOUT( "W %04X %02X L:%3d\n", addr, data, nes.GetScanline() );
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//}
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switch (addr & 0xF800)
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{
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case 0x8000:
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if ((data < 0xE0) || (reg[0] != 0))
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{
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SetVROM_1K_Bank(0, data);
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}
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else
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{
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SetCRAM_1K_Bank(0, data & 0x1F);
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}
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break;
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case 0x8800:
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if ((data < 0xE0) || (reg[0] != 0))
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{
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SetVROM_1K_Bank(1, data);
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}
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else
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{
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SetCRAM_1K_Bank(1, data & 0x1F);
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}
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break;
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case 0x9000:
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if ((data < 0xE0) || (reg[0] != 0))
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{
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SetVROM_1K_Bank(2, data);
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}
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else
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{
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SetCRAM_1K_Bank(2, data & 0x1F);
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}
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break;
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case 0x9800:
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if ((data < 0xE0) || (reg[0] != 0))
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{
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SetVROM_1K_Bank(3, data);
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}
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else
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{
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SetCRAM_1K_Bank(3, data & 0x1F);
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}
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break;
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case 0xA000:
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if ((data < 0xE0) || (reg[1] != 0))
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{
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SetVROM_1K_Bank(4, data);
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}
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else
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{
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SetCRAM_1K_Bank(4, data & 0x1F);
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}
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break;
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case 0xA800:
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if ((data < 0xE0) || (reg[1] != 0))
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{
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SetVROM_1K_Bank(5, data);
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}
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else
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{
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SetCRAM_1K_Bank(5, data & 0x1F);
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}
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break;
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case 0xB000:
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if ((data < 0xE0) || (reg[1] != 0))
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{
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SetVROM_1K_Bank(6, data);
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}
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else
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{
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SetCRAM_1K_Bank(6, data & 0x1F);
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}
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break;
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case 0xB800:
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if ((data < 0xE0) || (reg[1] != 0))
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{
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SetVROM_1K_Bank(7, data);
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}
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else
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{
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SetCRAM_1K_Bank(7, data & 0x1F);
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}
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break;
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case 0xC000:
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if (patch == 0)
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{
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if (data <= 0xDF)
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{
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SetVROM_1K_Bank(8, data);
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}
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else
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{
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SetVRAM_1K_Bank(8, data & 0x01);
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}
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}
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break;
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case 0xC800:
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if (patch == 0)
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{
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if (data <= 0xDF)
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{
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SetVROM_1K_Bank(9, data);
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}
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else
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{
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SetVRAM_1K_Bank(9, data & 0x01);
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}
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}
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break;
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case 0xD000:
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if (patch == 0)
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{
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if (data <= 0xDF)
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{
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SetVROM_1K_Bank(10, data);
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}
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else
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{
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SetVRAM_1K_Bank(10, data & 0x01);
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}
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}
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break;
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case 0xD800:
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if (patch == 0)
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{
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if (data <= 0xDF)
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{
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SetVROM_1K_Bank(11, data);
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}
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else
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{
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SetVRAM_1K_Bank(11, data & 0x01);
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}
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}
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break;
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case 0xE000:
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SetPROM_8K_Bank(4, data & 0x3F);
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if (patch == 2)
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{
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if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_VMIRROR);
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else SetVRAM_Mirror(VRAM_MIRROR4L);
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}
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if (patch == 3)
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{
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if ((data & 0x80) != 0) SetVRAM_Mirror(VRAM_HMIRROR);
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else SetVRAM_Mirror(VRAM_VMIRROR);
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}
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break;
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case 0xE800:
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reg[0] = (byte)(data & 0x40);
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reg[1] = (byte)(data & 0x80);
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SetPROM_8K_Bank(5, data & 0x3F);
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break;
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case 0xF000:
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SetPROM_8K_Bank(6, data & 0x3F);
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break;
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case 0xF800:
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if (addr == 0xF800)
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{
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if (exsound_enable != 0)
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{
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nes.apu.ExWrite(addr, data);
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}
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reg[2] = data;
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}
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break;
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}
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}
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//void Mapper019::Clock(INT cycles)
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public override void Clock(int cycles)
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{
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if (irq_enable != 0)
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{
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if ((irq_counter += cycles) >= 0x7FFF)
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{
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// irq_counter = 0x7FFF;
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// nes.cpu.IRQ_NotPending();
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irq_enable = 0;
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// irq_counter &= 0x7FFF;
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irq_counter = 0x7FFF;
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nes.cpu.SetIRQ(IRQ_MAPPER);
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}
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}
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}
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//void Mapper019::SaveState(LPBYTE p)
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public override void SaveState(byte[] p)
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{
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// p[0] = reg[0];
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// p[1] = reg[1];
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// p[2] = reg[2];
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// p[3] = irq_enable;
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// *(WORD*)&p[4] = irq_counter;
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//::memcpy(&p[8], exram, sizeof(exram));
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}
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//void Mapper019::LoadState(LPBYTE p)
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public override void LoadState(byte[] p)
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{
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// reg[0] = p[0];
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// reg[1] = p[1];
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// reg[2] = p[2];
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// irq_enable = p[3];
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// irq_counter = *(WORD*)&p[4];
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//::memcpy(exram, &p[8], sizeof(exram));
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}
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public override bool IsStateSave()
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{
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return true;
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}
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}
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}
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