| c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2002 Ben Parnell |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "mapinc.h" |
| 23 | |
| 24 | |
| 25 | |
| 26 | |
| 27 | DECLFW(Mapper15_write) |
| 28 | { |
| 29 | switch(A) |
| 30 | { |
| 31 | case 0x8000: |
| 32 | if(V&0x80) |
| 33 | { |
| 34 | ROM_BANK8(0x8000,(V<<1)+1); |
| 35 | ROM_BANK8(0xA000,(V<<1)); |
| 36 | ROM_BANK8(0xC000,(V<<1)+2); |
| 37 | ROM_BANK8(0xE000,(V<<1)+1); |
| 38 | } |
| 39 | else |
| 40 | { |
| 41 | ROM_BANK16(0x8000,V); |
| 42 | ROM_BANK16(0xC000,V+1); |
| 43 | } |
| 44 | MIRROR_SET((V>>6)&1); |
| 45 | break; |
| 46 | case 0x8001: |
| 47 | MIRROR_SET(0); |
| 48 | ROM_BANK16(0x8000,V); |
| 49 | ROM_BANK16(0xc000,~0); |
| 50 | break; |
| 51 | case 0x8002: |
| 52 | if(V&0x80) |
| 53 | { |
| 54 | ROM_BANK8(0x8000,((V<<1)+1)); |
| 55 | ROM_BANK8(0xA000,((V<<1)+1)); |
| 56 | ROM_BANK8(0xC000,((V<<1)+1)); |
| 57 | ROM_BANK8(0xE000,((V<<1)+1)); |
| 58 | } |
| 59 | else |
| 60 | { |
| 61 | ROM_BANK8(0x8000,(V<<1)); |
| 62 | ROM_BANK8(0xA000,(V<<1)); |
| 63 | ROM_BANK8(0xC000,(V<<1)); |
| 64 | ROM_BANK8(0xE000,(V<<1)); |
| 65 | } |
| 66 | break; |
| 67 | case 0x8003: |
| 68 | MIRROR_SET((V>>6)&1); |
| 69 | if(V&0x80) |
| 70 | { |
| 71 | ROM_BANK8(0xC000,(V<<1)+1); |
| 72 | ROM_BANK8(0xE000,(V<<1)); |
| 73 | } |
| 74 | else |
| 75 | { |
| 76 | ROM_BANK16(0xC000,V); |
| 77 | } |
| 78 | break; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | void Mapper15_init(void) |
| 83 | { |
| 84 | ROM_BANK32(0); |
| 85 | SetWriteHandler(0x8000,0xFFFF,Mapper15_write); |
| 86 | } |
| 87 | |
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