| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2005 CaH4e3 |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | * BMC 42-in-1 reset switch |
| 21 | */ |
| 22 | |
| 23 | #include "mapinc.h" |
| 24 | |
| 25 | static uint8 bank_mode; |
| 26 | static uint8 bank_value; |
| 27 | static uint8 prgb[4]; |
| 28 | static SFORMAT StateRegs[]= |
| 29 | { |
| 30 | {0} |
| 31 | }; |
| 32 | |
| 33 | static void Sync(void) |
| 34 | { |
| 35 | FCEU_printf("%02x: %02x %02x\n", bank_mode, bank_value, prgb[0]); |
| 36 | switch(bank_mode&7) |
| 37 | { |
| 38 | case 0: |
| 39 | setprg32(0x8000,bank_value&7); break; |
| 40 | case 1: |
| 41 | setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]); |
| 42 | setprg16(0xC000,(bank_value&7)>>1); |
| 43 | case 4: |
| 44 | setprg32(0x8000,8+(bank_value&7)); break; |
| 45 | case 5: |
| 46 | setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]); |
| 47 | setprg16(0xC000,((8+(bank_value&7))>>1)+prgb[3]); |
| 48 | case 2: |
| 49 | setprg8(0x8000,prgb[0]>>2); |
| 50 | setprg8(0xa000,prgb[1]); |
| 51 | setprg8(0xc000,prgb[2]); |
| 52 | setprg8(0xe000,~0); |
| 53 | break; |
| 54 | case 3: |
| 55 | setprg8(0x8000,prgb[0]); |
| 56 | setprg8(0xa000,prgb[1]); |
| 57 | setprg8(0xc000,prgb[2]); |
| 58 | setprg8(0xe000,prgb[3]); |
| 59 | break; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | static DECLFW(BMC13in1JY110Write) |
| 64 | { |
| 65 | FCEU_printf("%04x:%04x\n",A,V); |
| 66 | switch(A) |
| 67 | { |
| 68 | case 0x8000: |
| 69 | case 0x8001: |
| 70 | case 0x8002: |
| 71 | case 0x8003: prgb[A&3]=V; break; |
| 72 | case 0xD000: bank_mode=V; break; |
| 73 | case 0xD001: setmirror(V&3); |
| 74 | case 0xD002: break; |
| 75 | case 0xD003: bank_value=V; break; |
| 76 | } |
| 77 | Sync(); |
| 78 | } |
| 79 | |
| 80 | static void BMC13in1JY110Power(void) |
| 81 | { |
| 82 | prgb[0]=prgb[1]=prgb[2]=prgb[3]=0; |
| 83 | bank_mode=0; |
| 84 | bank_value=0; |
| 85 | setprg32(0x8000,0); |
| 86 | setchr8(0); |
| 87 | SetWriteHandler(0x8000,0xFFFF,BMC13in1JY110Write); |
| 88 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 89 | } |
| 90 | |
| 91 | static void StateRestore(int version) |
| 92 | { |
| 93 | Sync(); |
| 94 | } |
| 95 | |
| 96 | void BMC13in1JY110_Init(CartInfo *info) |
| 97 | { |
| 98 | info->Power=BMC13in1JY110Power; |
| 99 | AddExState(&StateRegs, ~0, 0, 0); |
| 100 | GameStateRestore=StateRestore; |
| 101 | } |
| 102 | |
| 103 | |