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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 | * CAI Shogakko no Sansu |
21 | */ |
22 | |
23 | #include "mapinc.h" |
24 | |
25 | static uint8 *CHRRAM=NULL; |
26 | static uint8 SWRAM[4096]; |
27 | |
28 | static uint8 regs[16]; |
29 | static uint8 WRAM[4096]; |
30 | static SFORMAT StateRegs[]= |
31 | { |
32 | {®s, 16, "REGS"}, |
33 | {WRAM, 4096, "WRAM"}, |
34 | {0} |
35 | }; |
36 | |
37 | static void Sync(void) |
38 | { |
39 | if(regs[5]&0x40) |
40 | { |
41 | setchr4r(0,0x1000,regs[5]&0x3F); |
42 | } |
43 | else |
44 | { |
45 | setchr4r(0x10,0x0000,regs[5]); |
46 | setchr4r(0x10,0x1000,regs[5]^1); |
47 | } |
48 | setprg8r((regs[2]>>6)&1,0x8000,(regs[2]&0x3F)); |
49 | setprg8r((regs[3]>>6)&1,0xA000,(regs[3]&0x3F)); |
50 | setprg8r((regs[4]>>6)&1,0xC000,(regs[4]&0x3F)); |
51 | setprg8r(1,0xE000,~0); |
52 | setmirror((regs[0xA]&3)); |
53 | } |
54 | |
55 | static DECLFW(M190Write) |
56 | { |
57 | // FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp); |
58 | regs[(A&0x0F00)>>8]=V; |
59 | Sync(); |
60 | } |
61 | |
62 | static DECLFR(M190Read) |
63 | { |
64 | // FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp); |
65 | return regs[(A&0x0F00)>>8]; |
66 | } |
67 | |
68 | static DECLFR(AWRAM) |
69 | { |
70 | return(WRAM[A-0x7000]); |
71 | } |
72 | static DECLFW(BWRAM) |
73 | { |
74 | WRAM[A-0x7000]=V; |
75 | } |
76 | |
77 | static DECLFR(ASWRAM) |
78 | { |
79 | return(SWRAM[A-0x6000]); |
80 | } |
81 | static DECLFW(BSWRAM) |
82 | { |
83 | SWRAM[A-0x6000]=V; |
84 | } |
85 | |
86 | static void M190Power(void) |
87 | { |
88 | setvram8(CHRRAM); |
89 | SetReadHandler(0x8000,0xFFFF,CartBR); |
90 | SetWriteHandler(0x8000,0xFFFF,M190Write); |
91 | // SetReadHandler(0xDA00,0xDA00,M190Read); |
92 | // SetReadHandler(0xDB00,0xDB00,M190Read); |
93 | SetReadHandler(0xDC00,0xDC00,M190Read); |
94 | SetReadHandler(0xDD00,0xDD00,M190Read); |
95 | SetReadHandler(0x7000,0x7FFF,AWRAM); |
96 | SetWriteHandler(0x7000,0x7FFF,BWRAM); |
97 | SetReadHandler(0x6000,0x6FFF,ASWRAM); |
98 | SetWriteHandler(0x6000,0x6FFF,BSWRAM); |
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99 | #ifdef ASM_6502 |
100 | Page[14]=Page[15]=WRAM-0x7000; |
101 | Page[12]=Page[13]=SWRAM-0x6000; |
102 | #endif |
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103 | Sync(); |
104 | } |
105 | |
106 | static void M190Close(void) |
107 | { |
108 | if(CHRRAM) |
109 | FCEU_gfree(CHRRAM); |
110 | CHRRAM=NULL; |
111 | } |
112 | |
113 | static void StateRestore(int version) |
114 | { |
115 | Sync(); |
116 | } |
117 | |
118 | void Mapper190_Init(CartInfo *info) |
119 | { |
120 | info->Power=M190Power; |
121 | info->Close=M190Close; |
122 | if(info->battery) |
123 | { |
124 | info->SaveGame[0]=SWRAM; |
125 | info->SaveGameLen[0]=4096; |
126 | } |
127 | GameStateRestore=StateRestore; |
128 | CHRRAM=(uint8*)FCEU_gmalloc(8192); |
129 | SetupCartCHRMapping(0x10,CHRRAM,8192,1); |
130 | AddExState(CHRRAM, 8192, 0, "CHRRAM"); |
131 | AddExState(&StateRegs, ~0, 0, 0); |
132 | } |