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 | |