////////////////////////////////////////////////////////////////////////// // Mapper189 Street Fighter 2/Yoko version // // 快打傅説 Street Fighter IV (GOUDER) // ////////////////////////////////////////////////////////////////////////// using static VirtualNes.Core.CPU; using static VirtualNes.MMU; using BYTE = System.Byte; using INT = System.Int32; namespace VirtualNes.Core { public class Mapper189 : Mapper { BYTE patch; BYTE[] reg = new BYTE[2]; BYTE chr01, chr23, chr4, chr5, chr6, chr7; BYTE irq_enable; BYTE irq_counter; BYTE irq_latch; // SF4 BYTE[] protect_dat = new byte[4]; BYTE lwd; public Mapper189(NES parent) : base(parent) { } public override void Reset() { SetPROM_32K_Bank(PROM_8K_SIZE - 4, PROM_8K_SIZE - 3, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1); if (VROM_1K_SIZE != 0) { SetVROM_8K_Bank(0); } reg[0] = reg[1] = 0; chr01 = 0; chr23 = 2; chr4 = 4; chr5 = 5; chr6 = 6; chr7 = 7; SetBank_PPU(); irq_enable = 0; irq_counter = 0; irq_latch = 0; for (INT i = 0; i < 4; i++) { protect_dat[i] = 0; } lwd = 0xFF; patch = 0; uint crc = nes.rom.GetPROM_CRC(); if (crc == 0x20ca2ad3) { // Street Fighter IV (GOUDER) patch = 1; SetPROM_32K_Bank(0); // $4000-$5FFF SetPROM_Bank(2, XRAM, BANKTYPE_ROM); } } //void Mapper189::WriteLow(WORD addr, BYTE data) public override void WriteLow(ushort addr, byte data) { if ((addr & 0xFF00) == 0x4100) { // Street Fighter 2 YOKO SetPROM_32K_Bank((data & 0x30) >> 4); } else if ((addr & 0xFF00) == 0x6100) { // Master Fighter 2 SetPROM_32K_Bank(data & 0x03); } if (patch != 0) { // Street Fighter IV (GOUDER) BYTE[] a5000xordat = new byte[256]{ 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01, 0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00, 0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; if ((addr >= 0x4800) && (addr <= 0x4FFF)) { SetPROM_32K_Bank(((data & 0x10) >> 3) + (data & 0x1)); if (!nes.rom.Is4SCREEN()) { if ((data & 0x20) != 0) SetVRAM_Mirror(VRAM_HMIRROR); else SetVRAM_Mirror(VRAM_VMIRROR); } } if ((addr >= 0x5000) && (addr <= 0x57FF)) { lwd = data; } if ((addr >= 0x5800) && (addr <= 0x5FFF)) { // XRAM[0x1000+(addr & 3)] = // $5800 "JMP $xxxx" write XRAM[0x1800 + (addr & 3)] = protect_dat[addr & 3] = (byte)(data ^ a5000xordat[lwd]); } } } //void Mapper189::Write(WORD addr, BYTE data) public override void Write(ushort addr, byte data) { switch (addr & 0xE001) { case 0x8000: reg[0] = data; SetBank_PPU(); break; case 0x8001: reg[1] = data; SetBank_PPU(); switch (reg[0] & 0x07) { case 0x00: chr01 = (byte)(data & 0xFE); SetBank_PPU(); break; case 0x01: chr23 = (byte)(data & 0xFE); 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; } break; case 0xA000: if ((data & 0x01) != 0) SetVRAM_Mirror(VRAM_HMIRROR); else SetVRAM_Mirror(VRAM_VMIRROR); break; case 0xC000: irq_counter = data; break; case 0xC001: irq_latch = data; break; case 0xE000: irq_enable = 0; nes.cpu.ClrIRQ(IRQ_MAPPER); break; case 0xE001: irq_enable = 0xFF; break; } } //void Mapper189::HSync(INT scanline) public override void HSync(int scanline) { if ((scanline >= 0 && scanline <= 239)) { if (nes.ppu.IsDispON()) { if (irq_enable != 0) { if ((--irq_counter) == 0) { // if( !(irq_counter--) ) { irq_counter = irq_latch; nes.cpu.SetIRQ(IRQ_MAPPER); } } } } } void SetBank_PPU() { if (patch != 0) { SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1, chr4, chr5, chr6, chr7); } else { if (VROM_1K_SIZE != 0) { if ((reg[0] & 0x80) != 0) { SetVROM_8K_Bank(chr4, chr5, chr6, chr7, chr01, chr01 + 1, chr23, chr23 + 1); } else { SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1, chr4, chr5, chr6, chr7); } } else { if ((reg[0] & 0x80) != 0) { SetCRAM_1K_Bank(4, (chr01 + 0) & 0x07); SetCRAM_1K_Bank(5, (chr01 + 1) & 0x07); SetCRAM_1K_Bank(6, (chr23 + 0) & 0x07); SetCRAM_1K_Bank(7, (chr23 + 1) & 0x07); SetCRAM_1K_Bank(0, chr4 & 0x07); SetCRAM_1K_Bank(1, chr5 & 0x07); SetCRAM_1K_Bank(2, chr6 & 0x07); SetCRAM_1K_Bank(3, chr7 & 0x07); } else { SetCRAM_1K_Bank(0, (chr01 + 0) & 0x07); SetCRAM_1K_Bank(1, (chr01 + 1) & 0x07); SetCRAM_1K_Bank(2, (chr23 + 0) & 0x07); SetCRAM_1K_Bank(3, (chr23 + 1) & 0x07); SetCRAM_1K_Bank(4, chr4 & 0x07); SetCRAM_1K_Bank(5, chr5 & 0x07); SetCRAM_1K_Bank(6, chr6 & 0x07); SetCRAM_1K_Bank(7, chr7 & 0x07); } } } } //void Mapper189::SaveState(LPBYTE p) public override void SaveState(byte[] p) { p[0] = reg[0]; p[1] = reg[1]; p[2] = chr01; p[3] = chr23; p[4] = chr4; p[5] = chr5; p[6] = chr6; p[7] = chr7; p[8] = irq_enable; p[9] = irq_counter; p[10] = irq_latch; p[16] = protect_dat[0]; p[17] = protect_dat[1]; p[18] = protect_dat[2]; p[19] = protect_dat[3]; p[20] = lwd; } //void Mapper189::LoadState(LPBYTE p) public override void LoadState(byte[] p) { reg[0] = p[0]; reg[1] = p[1]; chr01 = p[2]; chr23 = p[3]; chr4 = p[4]; chr5 = p[5]; chr6 = p[6]; chr7 = p[7]; irq_enable = p[8]; irq_counter = p[9]; irq_latch = p[10]; protect_dat[0] = p[16]; protect_dat[1] = p[17]; protect_dat[2] = p[18]; protect_dat[3] = p[19]; lwd = p[20]; } public override bool IsStateSave() { return true; } } }