386f5371 |
1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2007 CaH4e3\r |
5 | *\r |
6 | * This program is free software; you can redistribute it and/or modify\r |
7 | * it under the terms of the GNU General Public License as published by\r |
8 | * the Free Software Foundation; either version 2 of the License, or\r |
9 | * (at your option) any later version.\r |
10 | *\r |
11 | * This program is distributed in the hope that it will be useful,\r |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
14 | * GNU General Public License for more details.\r |
15 | *\r |
16 | * You should have received a copy of the GNU General Public License\r |
17 | * along with this program; if not, write to the Free Software\r |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
19 | */\r |
20 | \r |
21 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 reg0, reg1, reg2;\r |
24 | static uint8 *WRAM=NULL;\r |
25 | static uint32 WRAMSIZE;\r |
26 | \r |
27 | static SFORMAT StateRegs[]=\r |
28 | {\r |
29 | {®0, 1, "REG0"},\r |
30 | {®1, 1, "REG1"},\r |
31 | {®2, 1, "REG2"},\r |
32 | {0}\r |
33 | };\r |
34 | \r |
35 | static void Sync(void)\r |
36 | {\r |
37 | setchr8(0);\r |
38 | setprg8(0x8000,0xc);\r |
39 | setprg8(0xe000,0xf);\r |
40 | if(reg2&0x10)\r |
41 | {\r |
42 | setprg8(0x6000,reg0);\r |
43 | setprg8(0xa000,0xd);\r |
44 | setprg8(0xc000,0xe);\r |
45 | }\r |
46 | else\r |
47 | {\r |
48 | setprg8r(0x10,0x6000,0);\r |
49 | setprg4(0xa000,(0xd<<1));\r |
50 | setprg2(0xb000,(0xd<<2)+2);\r |
51 | setprg2r(0x10,0xb800,4);\r |
52 | setprg2r(0x10,0xc000,5);\r |
53 | setprg2r(0x10,0xc800,6);\r |
54 | setprg2r(0x10,0xd000,7);\r |
55 | setprg2(0xd800,(0xe<<2)+3);\r |
56 | }\r |
57 | setmirror(reg1^1);\r |
58 | }\r |
59 | \r |
60 | static DECLFW(M103RamWrite0)\r |
61 | {\r |
62 | WRAM[A&0x1FFF]=V;\r |
63 | }\r |
64 | \r |
65 | static DECLFW(M103RamWrite1)\r |
66 | {\r |
67 | WRAM[0x2000+((A-0xB800)&0x1FFF)]=V;\r |
68 | }\r |
69 | \r |
70 | static DECLFW(M103Write0)\r |
71 | {\r |
72 | reg0=V&0xf;\r |
73 | Sync();\r |
74 | }\r |
75 | \r |
76 | static DECLFW(M103Write1)\r |
77 | {\r |
78 | reg1=(V>>3)&1;\r |
79 | Sync();\r |
80 | }\r |
81 | \r |
82 | static DECLFW(M103Write2)\r |
83 | {\r |
84 | reg2=V;\r |
85 | Sync();\r |
86 | }\r |
87 | \r |
88 | static void M103Power(void)\r |
89 | {\r |
90 | reg0=reg1=0; reg2=0;\r |
91 | Sync();\r |
92 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
93 | SetWriteHandler(0x6000,0x7FFF,M103RamWrite0);\r |
94 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
95 | SetWriteHandler(0xB800,0xD7FF,M103RamWrite1);\r |
96 | SetWriteHandler(0x8000,0x8FFF,M103Write0);\r |
97 | SetWriteHandler(0xE000,0xEFFF,M103Write1);\r |
98 | SetWriteHandler(0xF000,0xFFFF,M103Write2);\r |
99 | }\r |
100 | \r |
101 | static void M103Close(void)\r |
102 | {\r |
103 | if(WRAM)\r |
104 | FCEU_gfree(WRAM);\r |
105 | WRAM=NULL;\r |
106 | }\r |
107 | \r |
108 | static void StateRestore(int version)\r |
109 | {\r |
110 | Sync();\r |
111 | }\r |
112 | \r |
113 | void Mapper103_Init(CartInfo *info)\r |
114 | {\r |
115 | info->Power=M103Power;\r |
116 | info->Close=M103Close;\r |
117 | GameStateRestore=StateRestore;\r |
118 | \r |
119 | WRAMSIZE=16384;\r |
120 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
121 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
122 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
123 | \r |
124 | AddExState(&StateRegs, ~0, 0, 0);\r |
125 | }\r |