| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2006 CaH4e3\r |
| 5 | *\r |
| 6 | * This program is free software; you can redistribute it and/or modify\r |
| 7 | * it under the terms of the GNU General Public License as published by\r |
| 8 | * the Free Software Foundation; either version 2 of the License, or\r |
| 9 | * (at your option) any later version.\r |
| 10 | *\r |
| 11 | * This program is distributed in the hope that it will be useful,\r |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 14 | * GNU General Public License for more details.\r |
| 15 | *\r |
| 16 | * You should have received a copy of the GNU General Public License\r |
| 17 | * along with this program; if not, write to the Free Software\r |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 19 | *\r |
| 20 | * TXC mappers, originally much complex banksitching\r |
| 21 | *\r |
| 22 | * 01-22111-000 (05-00002-010) (132, 22211) - MGC-001 Qi Wang\r |
| 23 | * 01-22110-000 (52S ) - MGC-002 2-in-1 Gun\r |
| 24 | * 01-22111-100 (02-00002-010) (173 ) - MGC-008 Mahjong Block\r |
| 25 | * (079 ) - MGC-012 Poke Block\r |
| 26 | * 01-22110-200 (05-00002-010) (036 ) - MGC-014 Strike Wolf\r |
| 27 | * 01-22000-400 (05-00002-010) (036 ) - MGC-015 Policeman\r |
| 28 | * 01-22017-000 (05-PT017-080) (189 ) - MGC-017 Thunder Warrior\r |
| 29 | * 01-22270-000 (05-00002-010) (132, 22211) - MGC-xxx Creatom\r |
| 30 | * 01-22200-400 (------------) (079 ) - ET.03 F-15 City War\r |
| 31 | * (172 ) - 1991 Du Ma Racing\r |
| 32 | *\r |
| 33 | */\r |
| 34 | \r |
| 35 | #include "mapinc.h"\r |
| 36 | \r |
| 37 | static uint8 reg[4], cmd, is172, is173;\r |
| 38 | static SFORMAT StateRegs[]=\r |
| 39 | {\r |
| 40 | {reg, 4, "REGS"},\r |
| 41 | {&cmd, 1, "CMD"},\r |
| 42 | {0}\r |
| 43 | };\r |
| 44 | \r |
| 45 | static void Sync(void)\r |
| 46 | {\r |
| 47 | setprg32(0x8000,(reg[2]>>2)&1);\r |
| 48 | if(is172)\r |
| 49 | setchr8((((cmd^reg[2])>>3)&2)|(((cmd^reg[2])>>5)&1)); // 1991 DU MA Racing probably CHR bank sequence is WRONG, so it is possible to\r |
| 50 | // rearrange CHR banks for normal UNIF board and mapper 172 is unneccessary\r |
| 51 | else\r |
| 52 | setchr8(reg[2]&3);\r |
| 53 | }\r |
| 54 | \r |
| 55 | static DECLFW(UNL22211WriteLo)\r |
| 56 | {\r |
| 57 | // FCEU_printf("bs %04x %02x\n",A,V);\r |
| 58 | reg[A&3]=V;\r |
| 59 | }\r |
| 60 | \r |
| 61 | static DECLFW(UNL22211WriteHi)\r |
| 62 | {\r |
| 63 | // FCEU_printf("bs %04x %02x\n",A,V);\r |
| 64 | cmd=V;\r |
| 65 | Sync();\r |
| 66 | }\r |
| 67 | \r |
| 68 | static DECLFR(UNL22211ReadLo)\r |
| 69 | {\r |
| 70 | return (reg[1]^reg[2])|(is173?0x01:0x40);\r |
| 71 | // if(reg[3])\r |
| 72 | // return reg[2];\r |
| 73 | // else\r |
| 74 | // return X.DB;\r |
| 75 | }\r |
| 76 | \r |
| 77 | static void UNL22211Power(void)\r |
| 78 | {\r |
| 79 | Sync();\r |
| 80 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 81 | SetReadHandler(0x4100,0x4100,UNL22211ReadLo);\r |
| 82 | SetWriteHandler(0x4100,0x4103,UNL22211WriteLo);\r |
| 83 | SetWriteHandler(0x8000,0xFFFF,UNL22211WriteHi);\r |
| 84 | }\r |
| 85 | \r |
| 86 | static void StateRestore(int version)\r |
| 87 | {\r |
| 88 | Sync();\r |
| 89 | }\r |
| 90 | \r |
| 91 | void UNL22211_Init(CartInfo *info)\r |
| 92 | {\r |
| 93 | is172=0;\r |
| 94 | is173=0;\r |
| 95 | info->Power=UNL22211Power;\r |
| 96 | GameStateRestore=StateRestore;\r |
| 97 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 98 | }\r |
| 99 | \r |
| 100 | void Mapper172_Init(CartInfo *info)\r |
| 101 | {\r |
| 102 | is172=1; \r |
| 103 | is173=0;\r |
| 104 | info->Power=UNL22211Power;\r |
| 105 | GameStateRestore=StateRestore;\r |
| 106 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 107 | }\r |
| 108 | \r |
| 109 | void Mapper173_Init(CartInfo *info)\r |
| 110 | {\r |
| 111 | is172=0; \r |
| 112 | is173=1;\r |
| 113 | info->Power=UNL22211Power;\r |
| 114 | GameStateRestore=StateRestore;\r |
| 115 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 116 | }\r |