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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 |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
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19 | */\r |
20 | \r |
21 | #include "mapinc.h"\r |
22 | #include "mmc3.h"\r |
23 | \r |
24 | static DECLFW(UNLA9746Write)\r |
25 | {\r |
26 | // FCEU_printf("write raw %04x:%02x\n",A,V);\r |
27 | switch (A&0xE003)\r |
28 | {\r |
29 | case 0x8000: EXPREGS[1]=V; EXPREGS[0]=0; break;\r |
30 | case 0x8002: EXPREGS[0]=V; EXPREGS[1]=0; break;\r |
31 | case 0x8001: {\r |
32 | uint8 bits_rev = ((V&0x20)>>5)|((V&0x10)>>3)|((V&0x08)>>1)|((V&0x04)<<1);\r |
33 | switch(EXPREGS[0])\r |
34 | {\r |
35 | case 0x26: setprg8(0x8000, bits_rev); break;\r |
36 | case 0x25: setprg8(0xA000, bits_rev); break; \r |
37 | case 0x24: setprg8(0xC000, bits_rev); break; \r |
38 | case 0x23: setprg8(0xE000, bits_rev); break;\r |
39 | }\r |
40 | switch(EXPREGS[1])\r |
41 | {\r |
42 | case 0x0a:\r |
43 | case 0x08: EXPREGS[2] = (V << 4); break;\r |
44 | case 0x09: setchr1(0x0000, EXPREGS[2]|(V >> 1)); break;\r |
45 | case 0x0b: setchr1(0x0400, EXPREGS[2]|(V >> 1)|1); break;\r |
46 | case 0x0c:\r |
47 | case 0x0e: EXPREGS[2] = (V << 4); break;\r |
48 | case 0x0d: setchr1(0x0800, EXPREGS[2]|(V >> 1)); break;\r |
49 | case 0x0f: setchr1(0x0c00, EXPREGS[2]|(V >> 1)|1); break;\r |
50 | case 0x10:\r |
51 | case 0x12: EXPREGS[2] = (V << 4); break;\r |
52 | case 0x11: setchr1(0x1000, EXPREGS[2]|(V >> 1)); break;\r |
53 | case 0x14:\r |
54 | case 0x16: EXPREGS[2] = (V << 4); break;\r |
55 | case 0x15: setchr1(0x1400, EXPREGS[2]|(V >> 1)); break;\r |
56 | case 0x18:\r |
57 | case 0x1a: EXPREGS[2] = (V << 4); break;\r |
58 | case 0x19: setchr1(0x1800, EXPREGS[2]|(V >> 1)); break;\r |
59 | case 0x1c:\r |
60 | case 0x1e: EXPREGS[2] = (V << 4); break;\r |
61 | case 0x1d: setchr1(0x1c00, EXPREGS[2]|(V >> 1)); break;\r |
62 | }\r |
63 | }\r |
64 | break;\r |
65 | }\r |
66 | }\r |
67 | \r |
68 | static void UNLA9746Power(void)\r |
69 | {\r |
70 | GenMMC3Power();\r |
71 | SetWriteHandler(0x8000,0xbfff,UNLA9746Write);\r |
72 | }\r |
73 | \r |
74 | void UNLA9746_Init(CartInfo *info)\r |
75 | {\r |
76 | GenMMC3_Init(info, 128, 256, 0, 0);\r |
77 | info->Power=UNLA9746Power;\r |
78 | AddExState(EXPREGS, 6, 0, "EXPR");\r |
79 | }\r |
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80 | \r |