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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2009 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
19 | */\r |
20 | \r |
21 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 *WRAM=NULL;\r |
24 | static uint32 WRAMSIZE;\r |
25 | \r |
26 | char *GetKeyboard(void);\r |
27 | \r |
28 | static char *TransformerKeys, oldkeys[256];\r |
29 | static int TransformerCycleCount, TransformerChar = 0;\r |
30 | \r |
31 | static void FP_FASTAPASS(1) TransformerIRQHook(int a)\r |
32 | {\r |
33 | TransformerCycleCount+=a;\r |
34 | if(TransformerCycleCount >= 1000)\r |
35 | {\r |
36 | uint32 i;\r |
37 | TransformerCycleCount -= 1000;\r |
38 | TransformerKeys = GetKeyboard();\r |
39 | \r |
40 | for(i=0; i<256; i++) {\r |
41 | if(oldkeys[i] != TransformerKeys[i]) {\r |
42 | if(oldkeys[i] == 0)\r |
43 | TransformerChar = i;\r |
44 | else\r |
45 | TransformerChar = i | 0x80;\r |
46 | X6502_IRQBegin(FCEU_IQEXT);\r |
47 | memcpy((void *)&oldkeys[0], (void *)TransformerKeys, 256);\r |
48 | break;\r |
49 | }\r |
50 | }\r |
51 | }\r |
52 | }\r |
53 | \r |
54 | static DECLFR(TransformerRead)\r |
55 | {\r |
56 | uint8 ret = 0;\r |
57 | switch(A&3) {\r |
58 | case 0: ret = TransformerChar & 15; break;\r |
59 | case 1: ret = (TransformerChar >> 4); break;\r |
60 | case 2: break;\r |
61 | case 4: break;\r |
62 | }\r |
63 | X6502_IRQEnd(FCEU_IQEXT);\r |
64 | return ret;\r |
65 | }\r |
66 | \r |
67 | static void TransformerPower(void)\r |
68 | {\r |
69 | setprg8r(0x10,0x6000,0);\r |
70 | setprg16(0x8000,0);\r |
71 | setprg16(0xC000,~0);\r |
72 | setchr8(0);\r |
73 | \r |
74 | SetReadHandler(0x5000,0x5004,TransformerRead);\r |
75 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
76 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
77 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
78 | \r |
79 | MapIRQHook=TransformerIRQHook;\r |
80 | }\r |
81 | \r |
82 | static void TransformerClose(void)\r |
83 | {\r |
84 | if(WRAM)\r |
85 | FCEU_gfree(WRAM);\r |
86 | WRAM=NULL;\r |
87 | }\r |
88 | \r |
89 | void Transformer_Init(CartInfo *info)\r |
90 | {\r |
91 | info->Power=TransformerPower;\r |
92 | info->Close=TransformerClose;\r |
93 | \r |
94 | WRAMSIZE=8192;\r |
95 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
96 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
97 | if(info->battery)\r |
98 | {\r |
99 | info->SaveGame[0]=WRAM;\r |
100 | info->SaveGameLen[0]=WRAMSIZE;\r |
101 | }\r |
102 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
103 | }\r |