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 |
43725da7 |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
19 | *\r |
20 | * FDS Conversion\r |
21 | *\r |
386f5371 |
22 | */\r |
23 | \r |
24 | #include "mapinc.h"\r |
25 | \r |
26 | static uint8 reg0, reg1, reg2;\r |
27 | static uint8 *WRAM=NULL;\r |
28 | static uint32 WRAMSIZE;\r |
29 | \r |
30 | static SFORMAT StateRegs[]=\r |
31 | {\r |
32 | {®0, 1, "REG0"},\r |
33 | {®1, 1, "REG1"},\r |
34 | {®2, 1, "REG2"},\r |
35 | {0}\r |
36 | };\r |
37 | \r |
38 | static void Sync(void)\r |
39 | {\r |
40 | setchr8(0);\r |
41 | setprg8(0x8000,0xc);\r |
42 | setprg8(0xe000,0xf);\r |
43 | if(reg2&0x10)\r |
44 | {\r |
45 | setprg8(0x6000,reg0);\r |
46 | setprg8(0xa000,0xd);\r |
47 | setprg8(0xc000,0xe);\r |
48 | }\r |
49 | else\r |
50 | {\r |
51 | setprg8r(0x10,0x6000,0);\r |
52 | setprg4(0xa000,(0xd<<1));\r |
53 | setprg2(0xb000,(0xd<<2)+2);\r |
54 | setprg2r(0x10,0xb800,4);\r |
55 | setprg2r(0x10,0xc000,5);\r |
56 | setprg2r(0x10,0xc800,6);\r |
57 | setprg2r(0x10,0xd000,7);\r |
58 | setprg2(0xd800,(0xe<<2)+3);\r |
59 | }\r |
60 | setmirror(reg1^1);\r |
61 | }\r |
62 | \r |
63 | static DECLFW(M103RamWrite0)\r |
64 | {\r |
65 | WRAM[A&0x1FFF]=V;\r |
66 | }\r |
67 | \r |
68 | static DECLFW(M103RamWrite1)\r |
69 | {\r |
70 | WRAM[0x2000+((A-0xB800)&0x1FFF)]=V;\r |
71 | }\r |
72 | \r |
73 | static DECLFW(M103Write0)\r |
74 | {\r |
75 | reg0=V&0xf;\r |
76 | Sync();\r |
77 | }\r |
78 | \r |
79 | static DECLFW(M103Write1)\r |
80 | {\r |
81 | reg1=(V>>3)&1;\r |
82 | Sync();\r |
83 | }\r |
84 | \r |
85 | static DECLFW(M103Write2)\r |
86 | {\r |
87 | reg2=V;\r |
88 | Sync();\r |
89 | }\r |
90 | \r |
91 | static void M103Power(void)\r |
92 | {\r |
93 | reg0=reg1=0; reg2=0;\r |
94 | Sync();\r |
95 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
96 | SetWriteHandler(0x6000,0x7FFF,M103RamWrite0);\r |
97 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
98 | SetWriteHandler(0xB800,0xD7FF,M103RamWrite1);\r |
99 | SetWriteHandler(0x8000,0x8FFF,M103Write0);\r |
100 | SetWriteHandler(0xE000,0xEFFF,M103Write1);\r |
101 | SetWriteHandler(0xF000,0xFFFF,M103Write2);\r |
102 | }\r |
103 | \r |
104 | static void M103Close(void)\r |
105 | {\r |
106 | if(WRAM)\r |
107 | FCEU_gfree(WRAM);\r |
108 | WRAM=NULL;\r |
109 | }\r |
110 | \r |
111 | static void StateRestore(int version)\r |
112 | {\r |
113 | Sync();\r |
114 | }\r |
115 | \r |
116 | void Mapper103_Init(CartInfo *info)\r |
117 | {\r |
118 | info->Power=M103Power;\r |
119 | info->Close=M103Close;\r |
120 | GameStateRestore=StateRestore;\r |
121 | \r |
122 | WRAMSIZE=16384;\r |
123 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
124 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
125 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
126 | \r |
127 | AddExState(&StateRegs, ~0, 0, 0);\r |
128 | }\r |