320 lines
11 KiB
C#
320 lines
11 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper189 Street Fighter 2/Yoko version //
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// 快打傅説 Street Fighter IV (GOUDER) //
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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 Mapper189 : Mapper
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{
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BYTE patch;
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BYTE[] reg = new BYTE[2];
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BYTE chr01, chr23, chr4, chr5, chr6, chr7;
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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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// SF4
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BYTE[] protect_dat = new byte[4];
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BYTE lwd;
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public Mapper189(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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SetPROM_32K_Bank(PROM_8K_SIZE - 4, PROM_8K_SIZE - 3, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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if (VROM_1K_SIZE != 0)
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{
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SetVROM_8K_Bank(0);
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}
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reg[0] = reg[1] = 0;
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chr01 = 0;
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chr23 = 2;
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chr4 = 4;
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chr5 = 5;
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chr6 = 6;
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chr7 = 7;
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SetBank_PPU();
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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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for (INT i = 0; i < 4; i++)
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{
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protect_dat[i] = 0;
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}
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lwd = 0xFF;
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patch = 0;
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uint crc = nes.rom.GetPROM_CRC();
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if (crc == 0x20ca2ad3)
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{ // Street Fighter IV (GOUDER)
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patch = 1;
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SetPROM_32K_Bank(0);
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// $4000-$5FFF
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SetPROM_Bank(2, XRAM, BANKTYPE_ROM);
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}
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}
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//void Mapper189::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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if ((addr & 0xFF00) == 0x4100)
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{
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// Street Fighter 2 YOKO
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SetPROM_32K_Bank((data & 0x30) >> 4);
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}
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else if ((addr & 0xFF00) == 0x6100)
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{
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// Master Fighter 2
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SetPROM_32K_Bank(data & 0x03);
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}
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if (patch != 0)
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{
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// Street Fighter IV (GOUDER)
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BYTE[] a5000xordat = new byte[256]{
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
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0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
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0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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if ((addr >= 0x4800) && (addr <= 0x4FFF))
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{
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SetPROM_32K_Bank(((data & 0x10) >> 3) + (data & 0x1));
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if (!nes.rom.Is4SCREEN())
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{
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if ((data & 0x20) != 0)
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SetVRAM_Mirror(VRAM_HMIRROR);
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else SetVRAM_Mirror(VRAM_VMIRROR);
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}
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}
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if ((addr >= 0x5000) && (addr <= 0x57FF))
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{
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lwd = data;
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}
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if ((addr >= 0x5800) && (addr <= 0x5FFF))
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{
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// XRAM[0x1000+(addr & 3)] =
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// $5800 "JMP $xxxx" write
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XRAM[0x1800 + (addr & 3)] =
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protect_dat[addr & 3] = (byte)(data ^ a5000xordat[lwd]);
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}
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}
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}
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//void Mapper189::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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switch (addr & 0xE001)
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{
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case 0x8000:
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reg[0] = data;
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SetBank_PPU();
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break;
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case 0x8001:
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reg[1] = data;
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SetBank_PPU();
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switch (reg[0] & 0x07)
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{
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case 0x00:
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chr01 = (byte)(data & 0xFE);
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SetBank_PPU();
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break;
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case 0x01:
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chr23 = (byte)(data & 0xFE);
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SetBank_PPU();
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break;
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case 0x02:
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chr4 = data;
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SetBank_PPU();
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break;
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case 0x03:
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chr5 = data;
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SetBank_PPU();
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break;
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case 0x04:
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chr6 = data;
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SetBank_PPU();
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break;
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case 0x05:
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chr7 = data;
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SetBank_PPU();
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break;
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}
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break;
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case 0xA000:
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if ((data & 0x01) != 0)
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SetVRAM_Mirror(VRAM_HMIRROR);
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else SetVRAM_Mirror(VRAM_VMIRROR);
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break;
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case 0xC000:
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irq_counter = data;
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break;
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case 0xC001:
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irq_latch = data;
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break;
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case 0xE000:
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irq_enable = 0;
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nes.cpu.ClrIRQ(IRQ_MAPPER);
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break;
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case 0xE001:
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irq_enable = 0xFF;
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break;
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}
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}
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//void Mapper189::HSync(INT scanline)
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public override void HSync(int scanline)
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{
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if ((scanline >= 0 && scanline <= 239))
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{
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if (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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// if( !(irq_counter--) ) {
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irq_counter = irq_latch;
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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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}
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}
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void SetBank_PPU()
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{
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if (patch != 0)
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{
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SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1,
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chr4, chr5, chr6, chr7);
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}
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else
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{
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if (VROM_1K_SIZE != 0)
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{
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if ((reg[0] & 0x80) != 0)
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{
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SetVROM_8K_Bank(chr4, chr5, chr6, chr7,
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chr01, chr01 + 1, chr23, chr23 + 1);
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}
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else
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{
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SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1,
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chr4, chr5, chr6, chr7);
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}
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}
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else
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{
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if ((reg[0] & 0x80) != 0)
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{
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SetCRAM_1K_Bank(4, (chr01 + 0) & 0x07);
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SetCRAM_1K_Bank(5, (chr01 + 1) & 0x07);
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SetCRAM_1K_Bank(6, (chr23 + 0) & 0x07);
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SetCRAM_1K_Bank(7, (chr23 + 1) & 0x07);
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SetCRAM_1K_Bank(0, chr4 & 0x07);
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SetCRAM_1K_Bank(1, chr5 & 0x07);
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SetCRAM_1K_Bank(2, chr6 & 0x07);
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SetCRAM_1K_Bank(3, chr7 & 0x07);
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}
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else
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{
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SetCRAM_1K_Bank(0, (chr01 + 0) & 0x07);
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SetCRAM_1K_Bank(1, (chr01 + 1) & 0x07);
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SetCRAM_1K_Bank(2, (chr23 + 0) & 0x07);
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SetCRAM_1K_Bank(3, (chr23 + 1) & 0x07);
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SetCRAM_1K_Bank(4, chr4 & 0x07);
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SetCRAM_1K_Bank(5, chr5 & 0x07);
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SetCRAM_1K_Bank(6, chr6 & 0x07);
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SetCRAM_1K_Bank(7, chr7 & 0x07);
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}
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}
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}
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}
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//void Mapper189::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] = chr01;
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p[3] = chr23;
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p[4] = chr4;
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p[5] = chr5;
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p[6] = chr6;
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p[7] = chr7;
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p[8] = irq_enable;
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p[9] = irq_counter;
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p[10] = irq_latch;
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p[16] = protect_dat[0];
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p[17] = protect_dat[1];
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p[18] = protect_dat[2];
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p[19] = protect_dat[3];
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p[20] = lwd;
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}
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//void Mapper189::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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chr01 = p[2];
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chr23 = p[3];
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chr4 = p[4];
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chr5 = p[5];
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chr6 = p[6];
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chr7 = p[7];
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irq_enable = p[8];
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irq_counter = p[9];
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irq_latch = p[10];
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protect_dat[0] = p[16];
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protect_dat[1] = p[17];
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protect_dat[2] = p[18];
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protect_dat[3] = p[19];
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lwd = p[20];
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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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