| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2012 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 | * Many-in-one hacked mapper crap.\r |
| 21 | * \r |
| 22 | * Original BNROM is actually AxROM variations without mirroring control,\r |
| 23 | * and haven't SRAM on-board, so it must be removed from here\r |
| 24 | *\r |
| 25 | * Difficult banking is what NINA board doing, most hacks for 34 mapper are\r |
| 26 | * NINA hacks, so this is actually 34 mapper\r |
| 27 | *\r |
| 28 | */\r |
| 29 | \r |
| 30 | #include "mapinc.h"\r |
| 31 | \r |
| 32 | static uint8 regs[3];\r |
| 33 | static uint8 *WRAM=NULL;\r |
| 34 | static uint32 WRAMSIZE;\r |
| 35 | \r |
| 36 | static SFORMAT StateRegs[]=\r |
| 37 | {\r |
| 38 | {regs, 3, "REGS"},\r |
| 39 | {0}\r |
| 40 | };\r |
| 41 | \r |
| 42 | static void Sync(void)\r |
| 43 | {\r |
| 44 | setprg8r(0x10,0x6000,0);\r |
| 45 | setprg32(0x8000,regs[0]);\r |
| 46 | setchr4(0x0000,regs[1]); \r |
| 47 | setchr4(0x1000,regs[2]); \r |
| 48 | }\r |
| 49 | \r |
| 50 | static DECLFW(M34Write)\r |
| 51 | {\r |
| 52 | if(A>=0x8000)\r |
| 53 | regs[0] = V;\r |
| 54 | else\r |
| 55 | switch(A)\r |
| 56 | {\r |
| 57 | case 0x7ffd: regs[0] = V; break;\r |
| 58 | case 0x7ffe: regs[1] = V; break;\r |
| 59 | case 0x7fff: regs[2] = V; break;\r |
| 60 | }\r |
| 61 | Sync();\r |
| 62 | }\r |
| 63 | \r |
| 64 | static void M34Power(void)\r |
| 65 | {\r |
| 66 | regs[0] = 0;\r |
| 67 | Sync();\r |
| 68 | SetReadHandler(0x6000,0x7ffc,CartBR);\r |
| 69 | SetWriteHandler(0x6000,0x7ffc,CartBW);\r |
| 70 | SetReadHandler(0x8000,0xffff,CartBR);\r |
| 71 | SetWriteHandler(0x7ffd,0xffff,M34Write);\r |
| 72 | }\r |
| 73 | \r |
| 74 | static void M34Close(void)\r |
| 75 | {\r |
| 76 | if(WRAM)\r |
| 77 | FCEU_gfree(WRAM);\r |
| 78 | WRAM=NULL;\r |
| 79 | }\r |
| 80 | \r |
| 81 | static void StateRestore(int version)\r |
| 82 | {\r |
| 83 | Sync();\r |
| 84 | }\r |
| 85 | \r |
| 86 | void Mapper34_Init(CartInfo *info)\r |
| 87 | {\r |
| 88 | info->Power=M34Power;\r |
| 89 | info->Close=M34Close;\r |
| 90 | GameStateRestore=StateRestore;\r |
| 91 | \r |
| 92 | WRAMSIZE=8192;\r |
| 93 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 94 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 95 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 96 | \r |
| 97 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 98 | }\r |