| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
| 19 | */\r |
| 20 | \r |
| 21 | #include "mapinc.h"\r |
| 22 | \r |
| 23 | static uint8 reg[2];\r |
| 24 | \r |
| 25 | static uint8 *WRAM=NULL;\r |
| 26 | static uint32 WRAMSIZE;\r |
| 27 | \r |
| 28 | static SFORMAT StateRegs[]=\r |
| 29 | {\r |
| 30 | {reg, 2, "REG"},\r |
| 31 | {0}\r |
| 32 | };\r |
| 33 | \r |
| 34 | static void Sync(void)\r |
| 35 | {\r |
| 36 | setchr8(0);\r |
| 37 | setprg8r(0x10,0x6000,0);\r |
| 38 | setprg32(0x8000,reg[1]>>1);\r |
| 39 | setmirror((reg[0]&1)^1);\r |
| 40 | }\r |
| 41 | \r |
| 42 | static DECLFW(M179Write)\r |
| 43 | {\r |
| 44 | if(A==0xa000) reg[0]=V;\r |
| 45 | Sync();\r |
| 46 | }\r |
| 47 | \r |
| 48 | static DECLFW(M179WriteLo)\r |
| 49 | {\r |
| 50 | if(A==0x5ff1) reg[1]=V;\r |
| 51 | Sync();\r |
| 52 | }\r |
| 53 | \r |
| 54 | static void M179Power(void)\r |
| 55 | {\r |
| 56 | reg[0]=reg[1]=0;\r |
| 57 | Sync(); \r |
| 58 | SetWriteHandler(0x4020,0x5fff,M179WriteLo);\r |
| 59 | SetReadHandler(0x6000,0x7fff,CartBR);\r |
| 60 | SetWriteHandler(0x6000,0x7fff,CartBW);\r |
| 61 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 62 | SetWriteHandler(0x8000,0xFFFF,M179Write);\r |
| 63 | }\r |
| 64 | \r |
| 65 | static void M179Close(void)\r |
| 66 | {\r |
| 67 | if(WRAM)\r |
| 68 | FCEU_gfree(WRAM);\r |
| 69 | WRAM=NULL;\r |
| 70 | }\r |
| 71 | \r |
| 72 | static void StateRestore(int version)\r |
| 73 | {\r |
| 74 | Sync();\r |
| 75 | }\r |
| 76 | \r |
| 77 | void Mapper179_Init(CartInfo *info)\r |
| 78 | {\r |
| 79 | info->Power=M179Power;\r |
| 80 | info->Close=M179Close;\r |
| 81 | GameStateRestore=StateRestore;\r |
| 82 | \r |
| 83 | WRAMSIZE=8192;\r |
| 84 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 85 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 86 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 87 | if(info->battery)\r |
| 88 | {\r |
| 89 | info->SaveGame[0]=WRAM;\r |
| 90 | info->SaveGameLen[0]=WRAMSIZE;\r |
| 91 | }\r |
| 92 | \r |
| 93 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 94 | }\r |