e2d0dd92 |
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 | |
21 | #include "mapinc.h" |
22 | #include "mmc3.h" |
23 | |
24 | static void M187CW(uint32 A, uint8 V) |
25 | { |
26 | if((A&0x1000)==((MMC3_cmd&0x80)<<5)) |
27 | setchr1(A,V|0x100); |
28 | else |
29 | setchr1(A,V); |
30 | } |
31 | |
32 | static void M187PW(uint32 A, uint8 V) |
33 | { |
34 | if(EXPREGS[0]&0x80) |
35 | { |
36 | uint8 bank=EXPREGS[0]&0x1F; |
37 | if(EXPREGS[0]&0x20) |
38 | setprg32(0x8000,bank>>2); |
39 | else |
40 | { |
41 | setprg16(0x8000,bank); |
42 | setprg16(0xC000,bank); |
43 | } |
44 | } |
45 | else |
46 | setprg8(A,V&0x3F); |
47 | } |
48 | |
49 | static DECLFW(M187Write8000) |
50 | { |
51 | EXPREGS[2]=1; |
52 | MMC3_CMDWrite(A,V); |
53 | } |
54 | |
55 | static DECLFW(M187Write8001) |
56 | { |
57 | if(EXPREGS[2]) |
58 | MMC3_CMDWrite(A,V); |
59 | } |
60 | |
61 | static DECLFW(M187Write8003) |
62 | { |
63 | EXPREGS[2]=0; |
64 | if(V==0x28)setprg8(0xC000,0x17); |
65 | else if(V==0x2A)setprg8(0xA000,0x0F); |
66 | } |
67 | |
68 | |
69 | static DECLFW(M187WriteLo) |
70 | { |
71 | EXPREGS[1]=V; |
72 | if(A==0x5000) |
73 | { |
74 | EXPREGS[0]=V; |
75 | FixMMC3PRG(MMC3_cmd); |
76 | } |
77 | } |
78 | |
79 | static uint8 prot_data[4] = { 0x83, 0x83, 0x42, 0x00 }; |
80 | static DECLFR(M187Read) |
81 | { |
82 | return prot_data[EXPREGS[1]&3]; |
83 | } |
84 | |
85 | static void M187Power(void) |
86 | { |
87 | EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=0; |
88 | GenMMC3Power(); |
39e1ccff |
89 | Write_IRQFM(0x4017,0x40); |
e2d0dd92 |
90 | SetReadHandler(0x5000,0x5FFF,M187Read); |
91 | SetWriteHandler(0x5000,0x5FFF,M187WriteLo); |
92 | SetWriteHandler(0x8000,0x8000,M187Write8000); |
93 | SetWriteHandler(0x8001,0x8001,M187Write8001); |
94 | SetWriteHandler(0x8003,0x8003,M187Write8003); |
95 | } |
96 | |
97 | void Mapper187_Init(CartInfo *info) |
98 | { |
99 | GenMMC3_Init(info, 256, 256, 0, 0); |
100 | pwrap=M187PW; |
101 | cwrap=M187CW; |
102 | info->Power=M187Power; |
103 | AddExState(EXPREGS, 3, 0, "EXPR"); |
104 | } |