using System; namespace VirtualNes.Core { public class Mapper004 : Mapper { private const int MMC3_IRQ_KLAX = 1; private const int MMC3_IRQ_SHOUGIMEIKAN = 2; private const int MMC3_IRQ_DAI2JISUPER = 3; private const int MMC3_IRQ_DBZ2 = 4; private const int MMC3_IRQ_ROCKMAN3 = 5; protected byte[] reg = new byte[8]; protected byte prg0, prg1; protected byte chr01, chr23, chr4, chr5, chr6, chr7; protected byte we_sram; protected byte irq_type; protected byte irq_enable; protected byte irq_counter; protected byte irq_latch; protected byte irq_request; protected byte irq_preset; protected byte irq_preset_vbl; protected byte vs_patch; protected byte vs_index; public override bool IsStateSave() { return true; } private byte[] VS_TKO_Security = new byte[32] { 0xff, 0xbf, 0xb7, 0x97, 0x97, 0x17, 0x57, 0x4f, 0x6f, 0x6b, 0xeb, 0xa9, 0xb1, 0x90, 0x94, 0x14, 0x56, 0x4e, 0x6f, 0x6b, 0xeb, 0xa9, 0xb1, 0x90, 0xd4, 0x5c, 0x3e, 0x26, 0x87, 0x83, 0x13, 0x00 }; public Mapper004(NES parent) : base(parent) { } public override void Reset() { for (int i = 0; i < 8; i++) { reg[i] = 0x00; } prg0 = 0; prg1 = 1; SetBank_CPU(); chr01 = 0; chr23 = 2; chr4 = 4; chr5 = 5; chr6 = 6; chr7 = 7; SetBank_PPU(); we_sram = 0; // Disable irq_enable = 0; // Disable irq_counter = 0; irq_latch = 0xFF; irq_request = 0; irq_preset = 0; irq_preset_vbl = 0; // IRQ僞僀僾愝掕 nes.SetIrqType(NES.IRQMETHOD.IRQ_CLOCK); irq_type = 0; uint crc = nes.rom.GetPROM_CRC(); if (crc == 0x5c707ac4) { // Mother(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xcb106f49) { // F-1 Sensation(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x1170392a) { // Karakuri Kengou Den - Musashi Road - Karakuri Nin Hashiru!(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x14a01c70) { // Gun-Dec(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xeffeea40) { // For Klax(J) irq_type = MMC3_IRQ_KLAX; nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xc17ae2dc) { // God Slayer - Haruka Tenkuu no Sonata(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x126ea4a0) { // Summer Carnival '92 - Recca(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x1f2f4861) { // J League Fighting Soccer - The King of Ace Strikers(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x5a6860f1) { // Shougi Meikan '92(J) irq_type = MMC3_IRQ_SHOUGIMEIKAN; nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0xae280e20) { // Shougi Meikan '93(J) irq_type = MMC3_IRQ_SHOUGIMEIKAN; nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0xe19a2473) { // Sugoro Quest - Dice no Senshi Tachi(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x702d9b33) { // Star Wars - The Empire Strikes Back(Victor)(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0xa9a0d729) { // Dai Kaijuu - Deburas(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xc5fea9f2) { // Dai 2 Ji - Super Robot Taisen(J) irq_type = MMC3_IRQ_DAI2JISUPER; } if (crc == 0xd852c2f7) { // Time Zone(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xecfd3c69) { // Taito Chase H.Q.(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x7a748058) { // Tom & Jerry (and Tuffy)(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0xaafe699c) { // Ninja Ryukenden 3 - Yomi no Hakobune(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x6cc62c06) { // Hoshi no Kirby - Yume no Izumi no Monogatari(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x877dba77) { // My Life My Love - Boku no Yume - Watashi no Negai(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x6f96ed15) { // Max Warrior - Wakusei Kaigenrei(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x8685f366) { // Matendouji(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x8635fed1) { // Mickey Mouse 3 - Yume Fuusen(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x26ff3ea2) { // Yume Penguin Monogatari(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x7671bc51) { // Red Ariimaa 2(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0xade11141) { // Wanpaku Kokkun no Gourmet World(J) nes.SetIrqType(NES.IRQMETHOD.IRQ_HSYNC); } if (crc == 0x7c7ab58e) { // Walkuere no Bouken - Toki no Kagi Densetsu(J) nes.SetRenderMethod(EnumRenderMethod.POST_RENDER); } if (crc == 0x26ff3ea2) { // Yume Penguin Monogatari(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x126ea4a0) { // Summer Carnival '92 Recca(J) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0x1d2e5018 // Rockman 3(J) || crc == 0x6b999aaf) { // Megaman 3(U) irq_type = MMC3_IRQ_ROCKMAN3; } if (crc == 0xd88d48d7) { // Kick Master(U) irq_type = MMC3_IRQ_ROCKMAN3; } if (crc == 0xA67EA466) { // Alien 3(U) nes.SetRenderMethod(EnumRenderMethod.TILE_RENDER); } if (crc == 0xe763891b) { // DBZ2 irq_type = MMC3_IRQ_DBZ2; } // VS-Unisystem vs_patch = 0; vs_index = 0; if (crc == 0xeb2dba63 // VS TKO Boxing || crc == 0x98cfe016) { // VS TKO Boxing (Alt) vs_patch = 1; } if (crc == 0x135adf7c) { // VS Atari RBI Baseball vs_patch = 2; } if (crc == 0xf9d3b0a3 // VS Super Xevious || crc == 0x9924980a // VS Super Xevious (b1) || crc == 0x66bb838f) { // VS Super Xevious (b2) vs_patch = 3; } } private void SetBank_PPU() { if (MMU.VROM_1K_SIZE != 0) { if ((reg[0] & 0x80) != 0) { MMU.SetVROM_8K_Bank(chr4, chr5, chr6, chr7, chr01, chr01 + 1, chr23, chr23 + 1); } else { MMU.SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1, chr4, chr5, chr6, chr7); } } else { if ((reg[0] & 0x80) != 0) { MMU.SetCRAM_1K_Bank(4, (chr01 + 0) & 0x07); MMU.SetCRAM_1K_Bank(5, (chr01 + 1) & 0x07); MMU.SetCRAM_1K_Bank(6, (chr23 + 0) & 0x07); MMU.SetCRAM_1K_Bank(7, (chr23 + 1) & 0x07); MMU.SetCRAM_1K_Bank(0, chr4 & 0x07); MMU.SetCRAM_1K_Bank(1, chr5 & 0x07); MMU.SetCRAM_1K_Bank(2, chr6 & 0x07); MMU.SetCRAM_1K_Bank(3, chr7 & 0x07); } else { MMU.SetCRAM_1K_Bank(0, (chr01 + 0) & 0x07); MMU.SetCRAM_1K_Bank(1, (chr01 + 1) & 0x07); MMU.SetCRAM_1K_Bank(2, (chr23 + 0) & 0x07); MMU.SetCRAM_1K_Bank(3, (chr23 + 1) & 0x07); MMU.SetCRAM_1K_Bank(4, chr4 & 0x07); MMU.SetCRAM_1K_Bank(5, chr5 & 0x07); MMU.SetCRAM_1K_Bank(6, chr6 & 0x07); MMU.SetCRAM_1K_Bank(7, chr7 & 0x07); } } } public override byte ReadLow(ushort addr) { if (vs_patch == 0) { if (addr >= 0x5000 && addr <= 0x5FFF) { return MMU.XRAM[addr - 0x4000]; } } else if (vs_patch == 1) { // VS TKO Boxing Security if (addr == 0x5E00) { vs_index = 0; return 0x00; } else if (addr == 0x5E01) { return VS_TKO_Security[(vs_index++) & 0x1F]; } } else if (vs_patch == 2) { // VS Atari RBI Baseball Security if (addr == 0x5E00) { vs_index = 0; return 0x00; } else if (addr == 0x5E01) { if (vs_index++ == 9) return 0x6F; else return 0xB4; } } else if (vs_patch == 3) { // VS Super Xevious switch (addr) { case 0x54FF: return 0x05; case 0x5678: if (vs_index != 0) return 0x00; else return 0x01; case 0x578f: if (vs_index != 0) return 0xD1; else return 0x89; case 0x5567: if (vs_index != 0) { vs_index = 0; return 0x3E; } else { vs_index = 1; return 0x37; } default: break; } } return base.ReadLow(addr); } public override void WriteLow(ushort addr, byte data) { if (addr >= 0x5000 && addr <= 0x5FFF) { MMU.XRAM[addr - 0x4000] = data; } else { base.WriteLow(addr, data); } } public override void Write(ushort addr, byte data) { switch (addr & 0xE001) { case 0x8000: reg[0] = data; SetBank_CPU(); SetBank_PPU(); break; case 0x8001: reg[1] = data; 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; case 0x06: prg0 = data; SetBank_CPU(); break; case 0x07: prg1 = data; SetBank_CPU(); break; } break; case 0xA000: reg[2] = data; if (!nes.rom.Is4SCREEN()) { if ((data & 0x01) != 0) MMU.SetVRAM_Mirror(MMU.VRAM_HMIRROR); else MMU.SetVRAM_Mirror(MMU.VRAM_VMIRROR); } break; case 0xA001: reg[3] = data; //DEBUGOUT( "MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr&0xFFFF, data&0xFF, nes->GetScanline(), nes->cpu->GetTotalCycles() ); break; case 0xC000: //DEBUGOUT( "MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr&0xFFFF, data&0xFF, nes->GetScanline(), nes->cpu->GetTotalCycles() ); reg[4] = data; if (irq_type == MMC3_IRQ_KLAX || irq_type == MMC3_IRQ_ROCKMAN3) { irq_counter = data; } else { irq_latch = data; } if (irq_type == MMC3_IRQ_DBZ2) { irq_latch = 0x07; } break; case 0xC001: reg[5] = data; if (irq_type == MMC3_IRQ_KLAX || irq_type == MMC3_IRQ_ROCKMAN3) { irq_latch = data; } else { if ((nes.GetScanline() < 240) || (irq_type == MMC3_IRQ_SHOUGIMEIKAN)) { irq_counter |= 0x80; irq_preset = 0xFF; } else { irq_counter |= 0x80; irq_preset_vbl = 0xFF; irq_preset = 0; } } break; case 0xE000: reg[6] = data; irq_enable = 0; irq_request = 0; nes.cpu.ClrIRQ(CPU.IRQ_MAPPER); break; case 0xE001: reg[7] = data; irq_enable = 1; irq_request = 0; // nes->cpu->ClrIRQ( IRQ_MAPPER ); break; } } public override void Clock(int cycles) { } public override void HSync(int scanline) { if (irq_type == MMC3_IRQ_KLAX) { if ((scanline >= 0 && scanline <= 239) && nes.ppu.IsDispON()) { if (irq_enable != 0) { if (irq_counter == 0) { irq_counter = irq_latch; irq_request = 0xFF; } if (irq_counter > 0) { irq_counter--; } } } if (irq_request != 0) { nes.cpu.SetIRQ(CPU.IRQ_MAPPER); } } else if (irq_type == MMC3_IRQ_ROCKMAN3) { if ((scanline >= 0 && scanline <= 239) && nes.ppu.IsDispON()) { if (irq_enable != 0) { if ((--irq_counter) == 0) { irq_request = 0xFF; irq_counter = irq_latch; } } } if (irq_request != 0) { nes.cpu.SetIRQ(CPU.IRQ_MAPPER); } } else { if ((scanline >= 0 && scanline <= 239) && nes.ppu.IsDispON()) { if (irq_preset_vbl != 0) { irq_counter = irq_latch; irq_preset_vbl = 0; } if (irq_preset != 0) { irq_counter = irq_latch; irq_preset = 0; if (irq_type == MMC3_IRQ_DAI2JISUPER && scanline == 0) { irq_counter--; } } else if (irq_counter > 0) { irq_counter--; } if (irq_counter == 0) { if (irq_enable != 0) { irq_request = 0xFF; nes.cpu.SetIRQ(CPU.IRQ_MAPPER); } irq_preset = 0xFF; } } } } private void SetBank_CPU() { if ((reg[0] & 0x40) != 0) { MMU.SetPROM_32K_Bank(MMU.PROM_8K_SIZE - 2, prg1, prg0, MMU.PROM_8K_SIZE - 1); } else { MMU.SetPROM_32K_Bank(prg0, prg1, MMU.PROM_8K_SIZE - 2, MMU.PROM_8K_SIZE - 1); } } public override void SaveState(byte[] p) { for (int i = 0; i < 8; i++) { p[i] = reg[i]; } p[8] = prg0; p[9] = prg1; p[10] = chr01; p[11] = chr23; p[12] = chr4; p[13] = chr5; p[14] = chr6; p[15] = chr7; p[16] = irq_enable; p[17] = (byte)irq_counter; p[18] = irq_latch; p[19] = irq_request; p[20] = irq_preset; p[21] = irq_preset_vbl; } public override void LoadState(byte[] p) { for (int i = 0; i < 8; i++) { reg[i] = p[i]; } prg0 = p[8]; prg1 = p[9]; chr01 = p[10]; chr23 = p[11]; chr4 = p[12]; chr5 = p[13]; chr6 = p[14]; chr7 = p[15]; irq_enable = p[16]; irq_counter = (Byte)p[17]; irq_latch = p[18]; irq_request = p[19]; irq_preset = p[20]; irq_preset_vbl = p[21]; } } }