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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
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4 | * Copyright (C) 2002 Xodnizel |
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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 | |
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23 | extern uint32 ROM_size; |
24 | static uint8 latche; |
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25 | |
26 | static void Sync(void) |
27 | { |
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28 | if(latche) |
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29 | { |
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30 | if(latche&0x10) |
31 | setprg16(0x8000,(latche&7)); |
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32 | else |
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33 | setprg16(0x8000,(latche&7)|8); |
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34 | } |
35 | else |
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36 | setprg16(0x8000,7+(ROM_size>>4)); |
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37 | } |
38 | |
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39 | static DECLFW(M188Write) |
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40 | { |
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41 | latche=V; |
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42 | Sync(); |
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43 | } |
44 | |
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45 | static DECLFR(ExtDev) |
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46 | { |
47 | return(3); |
48 | } |
49 | |
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50 | static void Power(void) |
51 | { |
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52 | latche=0; |
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53 | Sync(); |
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54 | setchr8(0); |
55 | setprg16(0xc000,0x7); |
56 | SetReadHandler(0x6000,0x7FFF,ExtDev); |
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57 | SetReadHandler(0x8000,0xFFFF,CartBR); |
58 | SetWriteHandler(0x8000,0xFFFF,M188Write); |
59 | } |
60 | |
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61 | static void StateRestore(int version) |
62 | { |
63 | Sync(); |
64 | } |
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65 | |
66 | void Mapper188_Init(CartInfo *info) |
67 | { |
68 | info->Power=Power; |
69 | GameStateRestore=StateRestore; |
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70 | AddExState(&latche, 1, 0, "LATCH"); |
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71 | } |