261 lines
6.9 KiB
C#
261 lines
6.9 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper033 Taito TC0190 //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.Core.CPU;
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using static VirtualNes.MMU;
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using BYTE = System.Byte;
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using INT = System.Int32;
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namespace VirtualNes.Core
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{
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public class Mapper033 : Mapper
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{
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BYTE[] reg = new byte[7];
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BYTE patch;
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BYTE irq_enable;
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BYTE irq_counter;
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BYTE irq_latch;
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public Mapper033(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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irq_enable = 0;
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irq_counter = 0;
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irq_latch = 0;
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reg[0] = 0;
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reg[1] = 2;
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reg[2] = 4;
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reg[3] = 5;
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reg[4] = 6;
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reg[5] = 7;
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reg[6] = 1;
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SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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if (VROM_8K_SIZE != 0)
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{
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SetBank();
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}
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uint crc = nes.rom.GetPROM_CRC();
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// Check For Old #33 games.... (CRC code by NesToy)
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if (crc == 0x5e9bc161 // Akira(J)
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|| crc == 0xecdbafa4 // Bakushou!! Jinsei Gekijou(J)
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|| crc == 0x59cd0c31 // Don Doko Don(J)
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|| crc == 0x837c1342 // Golf Ko Open(J)
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|| crc == 0x42d893e4 // Operation Wolf(J)
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|| crc == 0x1388aeb9 // Operation Wolf(U)
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|| crc == 0x07ee6d8f // Power Blazer(J)
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|| crc == 0x5193fb54 // Takeshi no Sengoku Fuuunji(J)
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|| crc == 0xa71c3452)
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{ // Insector X(J)
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patch = 1;
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}
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nes.SetRenderMethod(EnumRenderMethod.PRE_RENDER);
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if (crc == 0x202df297)
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{ // Captain Saver(J)
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nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER);
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}
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if (crc == 0x63bb86b5)
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{ // The Jetsons(J)
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nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER);
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}
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}
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//void Mapper033::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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// LOG( "Mapper033 addr=%04X data=%02X", addr&0xFFFF, data&0xFF );
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switch (addr)
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{
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case 0x8000:
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if (patch != 0)
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{
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if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_HMIRROR);
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else SetVRAM_Mirror(VRAM_VMIRROR);
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SetPROM_8K_Bank(4, data & 0x1F);
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}
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else
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{
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SetPROM_8K_Bank(4, data);
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}
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break;
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case 0x8001:
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if (patch != 0)
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{
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SetPROM_8K_Bank(5, data & 0x1F);
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}
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else
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{
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SetPROM_8K_Bank(5, data);
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}
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break;
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case 0x8002:
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reg[0] = data;
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SetBank();
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break;
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case 0x8003:
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reg[1] = data;
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SetBank();
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break;
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case 0xA000:
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reg[2] = data;
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SetBank();
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break;
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case 0xA001:
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reg[3] = data;
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SetBank();
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break;
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case 0xA002:
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reg[4] = data;
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SetBank();
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break;
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case 0xA003:
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reg[5] = data;
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SetBank();
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break;
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#if FLASE//0
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case 0xC003:
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case 0xE003:
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reg[6] = data;
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SetBank();
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break;
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case 0xC000:
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irq_counter = data;
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// nes.cpu.ClrIRQ( IRQ_MAPPER );
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break;
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case 0xC001:
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case 0xC002:
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case 0xE001:
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case 0xE002:
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irq_enable = data;
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// nes.cpu.ClrIRQ( IRQ_MAPPER );
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break;
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#else
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case 0xC000:
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irq_latch = data;
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irq_counter = irq_latch;
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break;
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case 0xC001:
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irq_counter = irq_latch;
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break;
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case 0xC002:
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irq_enable = 1;
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break;
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case 0xC003:
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irq_enable = 0;
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break;
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case 0xE001:
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case 0xE002:
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case 0xE003:
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break;
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#endif
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case 0xE000:
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if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_HMIRROR);
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else SetVRAM_Mirror(VRAM_VMIRROR);
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break;
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}
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}
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//void Mapper033::HSync(INT scanline)
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public override void HSync(int scanline)
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{
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#if FALSE//0
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// nes.cpu.ClrIRQ( IRQ_MAPPER );
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if( scanline >= 0 && scanline <= 239 ) {
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if( nes.ppu.IsDispON() ) {
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if( irq_enable ) {
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if( irq_counter == 0xFF ) {
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irq_enable = 0;
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irq_counter = 0;
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// nes.cpu.SetIRQ( IRQ_MAPPER );
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nes.cpu.SetIRQ( IRQ_TRIGGER );
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} else {
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irq_counter++;
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}
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}
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}
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}
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#else
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if (scanline >= 0 && scanline <= 239 && nes.ppu.IsDispON())
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{
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if (irq_enable != 0)
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{
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if (++irq_counter == 0)
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{
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irq_enable = 0;
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irq_counter = 0;
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nes.cpu.SetIRQ(IRQ_TRIGGER);
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}
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}
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}
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#endif
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}
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void SetBank()
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{
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SetVROM_2K_Bank(0, reg[0]);
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SetVROM_2K_Bank(2, reg[1]);
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// if( reg[6] & 0x01 ) {
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SetVROM_1K_Bank(4, reg[2]);
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SetVROM_1K_Bank(5, reg[3]);
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SetVROM_1K_Bank(6, reg[4]);
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SetVROM_1K_Bank(7, reg[5]);
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// } else {
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// SetVROM_2K_Bank( 4, reg[0] );
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// SetVROM_2K_Bank( 6, reg[1] );
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// }
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}
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//void Mapper033::SaveState(LPBYTE p)
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public override void SaveState(byte[] p)
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{
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for (INT i = 0; i < 7; i++)
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{
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p[i] = reg[i];
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}
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p[7] = irq_enable;
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p[8] = irq_counter;
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p[9] = irq_latch;
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}
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//void Mapper033::LoadState(LPBYTE p)
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public override void LoadState(byte[] p)
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{
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for (INT i = 0; i < 7; i++)
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{
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reg[i] = p[i];
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}
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irq_enable = p[7];
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irq_counter = p[8];
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irq_latch = p[9];
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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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