c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
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 | |
21 | #include "mapinc.h" |
22 | |
23 | |
24 | |
25 | DECLFW(Mapper117_write) |
26 | { |
27 | switch(A) |
28 | { |
29 | case 0xc003:IRQCount=V;break; |
30 | case 0xc001:IRQa=V;break; |
31 | case 0xa000:VROM_BANK1(0x0000,V);break; |
32 | case 0xa001:VROM_BANK1(0x0400,V);break; |
33 | case 0xa002:VROM_BANK1(0x0800,V);break; |
34 | case 0xa003:VROM_BANK1(0x0c00,V);break; |
35 | case 0xa004:VROM_BANK1(0x1000,V);break; |
36 | case 0xa005:VROM_BANK1(0x1400,V);break; |
37 | case 0xa006:VROM_BANK1(0x1800,V);break; |
38 | case 0xa007:VROM_BANK1(0x1c00,V);break; |
39 | case 0x8000:ROM_BANK8(0x8000,V);break; |
40 | case 0x8001:ROM_BANK8(0xa000,V);break; |
41 | case 0x8002:ROM_BANK8(0xc000,V);break; |
42 | case 0x8003:ROM_BANK8(0xe000,V);break; |
43 | } |
44 | } |
45 | |
46 | static void Mapper117_hb(void) |
47 | { |
48 | if(IRQa) |
49 | { |
50 | if(IRQCount<=0) |
51 | { |
52 | IRQa=0; |
53 | TriggerIRQ(); |
54 | } |
55 | else |
56 | { |
57 | IRQCount--; |
58 | } |
59 | } |
60 | } |
61 | |
62 | void Mapper117_init(void) |
63 | { |
64 | GameHBIRQHook=Mapper117_hb; |
65 | SetWriteHandler(0x8000,0xffff,Mapper117_write); |
66 | } |
67 | |