| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 19 | */\r |
| 20 | \r |
| 21 | #include "mapinc.h"\r |
| 22 | \r |
| 23 | static uint8 reg_prg[4];\r |
| 24 | static uint8 reg_chr[4];\r |
| 25 | static uint8 dip_switch;\r |
| 26 | \r |
| 27 | static SFORMAT StateRegs[]=\r |
| 28 | {\r |
| 29 | {reg_prg, 4, "PREG"},\r |
| 30 | {reg_chr, 4, "CREG"},\r |
| 31 | {0}\r |
| 32 | };\r |
| 33 | \r |
| 34 | static void Sync(void)\r |
| 35 | {\r |
| 36 | setprg8(0x8000,reg_prg[0]);\r |
| 37 | setprg8(0xa000,reg_prg[1]);\r |
| 38 | setprg8(0xc000,reg_prg[2]);\r |
| 39 | setprg8(0xe000,reg_prg[3]);\r |
| 40 | setchr2(0x0000,reg_chr[0]);\r |
| 41 | setchr2(0x0800,reg_chr[1]);\r |
| 42 | setchr2(0x1000,reg_chr[2]);\r |
| 43 | setchr2(0x1800,reg_chr[3]);\r |
| 44 | setmirror(MI_V);\r |
| 45 | }\r |
| 46 | \r |
| 47 | static DECLFW(MBS5Write)\r |
| 48 | {\r |
| 49 | int bank_sel = (A&0xC00)>>10;\r |
| 50 | switch (A&0xF000)\r |
| 51 | {\r |
| 52 | case 0x8000:\r |
| 53 | reg_chr[bank_sel]=A&0x1F;\r |
| 54 | break;\r |
| 55 | case 0xA000:\r |
| 56 | if(A&(1<<(dip_switch+4)))\r |
| 57 | reg_prg[bank_sel]=A&0x0F;\r |
| 58 | break;\r |
| 59 | }\r |
| 60 | Sync();\r |
| 61 | }\r |
| 62 | \r |
| 63 | static void MBS5Reset(void)\r |
| 64 | {\r |
| 65 | dip_switch++;\r |
| 66 | dip_switch&=3;\r |
| 67 | reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0; \r |
| 68 | Sync();\r |
| 69 | }\r |
| 70 | \r |
| 71 | static void MBS5Power(void)\r |
| 72 | {\r |
| 73 | dip_switch=0;\r |
| 74 | reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0; \r |
| 75 | Sync();\r |
| 76 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 77 | SetWriteHandler(0x8000,0xFFFF,MBS5Write);\r |
| 78 | }\r |
| 79 | \r |
| 80 | static void StateRestore(int version)\r |
| 81 | {\r |
| 82 | Sync();\r |
| 83 | }\r |
| 84 | \r |
| 85 | void BMCBS5_Init(CartInfo *info)\r |
| 86 | {\r |
| 87 | info->Power=MBS5Power;\r |
| 88 | info->Reset=MBS5Reset;\r |
| 89 | GameStateRestore=StateRestore;\r |
| 90 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 91 | }\r |