1 /* FCE Ultra - NES/Famicom Emulator
3 * Copyright notice for this file:
4 * Copyright (C) 2002 Ben Parnell
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.
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.
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
24 static uint8 latch[8];
25 #define CHRRAM (GameMemBlock)
27 static void S74LS374NSynco(void)
29 setprg32(0x8000,latch[0]);
31 setmirror(latch[2]&1);
35 static DECLFW(S74LS374NWrite)
37 //printf("$%04x:$%02x\n",A,V);
45 case 0:latch[0]=0;latch[1]=3;break;
46 case 4:latch[1]&=3;latch[1]|=(V<<2);break;
47 case 5:latch[0]=V&0x7;break;
48 case 6:latch[1]&=0x1C;latch[1]|=V&3;break;
49 case 7:latch[2]=V&1;break;
55 static void S74LS374NReset(void)
60 SetReadHandler(0x8000,0xFFFF,CartBR);
61 SetWriteHandler(0x4100,0x7FFF,S74LS374NWrite);
64 static void S74LS374NRestore(int version)
69 void S74LS374N_Init(void)
71 BoardPower=S74LS374NReset;
72 GameStateRestore=S74LS374NRestore;
73 AddExState(latch, 3, 0, "LATC");
74 AddExState(&cmd, 1, 0, "CMD");
78 static void S8259Synco(void)
82 setprg32(0x8000,latch[5]&7);
84 if(!UNIFchrrama) // No CHR RAM? Then BS'ing is ok.
89 setchr2(0x800*x,(x&1)|((latch[x]&7)<<1)|((latch[4]&7)<<4));
94 setchr2(0x800*x,(latch[x]&0x7)|((latch[4]&7)<<3));
97 switch((latch[7]>>1)&3)
99 case 0:setmirrorw(0,0,0,1);break;
100 case 1:setmirror(MI_H);break;
101 case 2:setmirror(MI_V);break;
102 case 3:setmirror(MI_0);break;
106 static DECLFW(S8259Write)
117 static void S8259Reset(void)
122 for(x=0;x<8;x++) latch[x]=0;
123 if(UNIFchrrama) setchr8(0);
126 SetReadHandler(0x8000,0xFFFF,CartBR);
127 SetWriteHandler(0x4100,0x7FFF,S8259Write);
130 static void S8259Restore(int version)
135 void S8259A_Init(void)
137 BoardPower=S8259Reset;
138 GameStateRestore=S8259Restore;
139 AddExState(latch, 8, 0, "LATC");
140 AddExState(&cmd, 1, 0, "CMD");
145 // SetupCartCHRMapping(0,CHRRAM,8192,1);
146 // AddExState(CHRRAM, 8192, 0, "CHRR");
150 void S8259B_Init(void)
152 BoardPower=S8259Reset;
153 GameStateRestore=S8259Restore;
154 AddExState(latch, 8, 0, "LATC");
155 AddExState(&cmd, 1, 0, "CMD");
159 static void(*WSync)(void);
161 static void SA0161MSynco()
163 setprg32(0x8000,(latch[0]>>3)&1);
167 static DECLFW(SAWrite)
176 static void SAReset(void)
180 SetReadHandler(0x8000,0xFFFF,CartBR);
181 SetWriteHandler(0x4100,0x5FFF,SAWrite);
184 void SA0161M_Init(void)
187 GameStateRestore=SA0161MSynco;
189 AddExState(&latch[0], 1, 0, "LATC");
192 static void SA72007Synco()
195 setchr8(latch[0]>>7);
198 void SA72007_Init(void)
201 GameStateRestore=SA72007Synco;
203 AddExState(&latch[0], 1, 0, "LATC");
206 static void SA72008Synco()
208 setprg32(0x8000,(latch[0]>>2)&1);
212 void SA72008_Init(void)
215 GameStateRestore=SA72008Synco;
217 AddExState(&latch[0], 1, 0, "LATC");
220 static DECLFW(SADWrite)
226 static void SADReset(void)
230 SetReadHandler(0x8000,0xFFFF,CartBR);
231 SetWriteHandler(0x8000,0xFFFF,SADWrite);
234 static void SA0036Synco()
237 setchr8(latch[0]>>7);
240 static void SA0037Synco()
242 setprg32(0x8000,(latch[0]>>3)&1);
246 void SA0036_Init(void)
249 GameStateRestore=SA0036Synco;
251 AddExState(&latch[0], 1, 0, "LATC");
254 void SA0037_Init(void)
257 GameStateRestore=SA0037Synco;
259 AddExState(&latch[0], 1, 0, "LATC");
262 static void TCU01Synco()
264 setprg32(0x8000,(latch[0]>>2)&1);
265 setchr8((latch[0]>>3)&0xF);
268 static DECLFW(TCWrite)
275 static void TCU01Reset(void)
278 SetReadHandler(0x8000,0xFFFF,CartBR);
279 SetWriteHandler(0x4100,0xFFFF,TCWrite);
283 void TCU01_Init(void)
285 GameStateRestore=TCU01Synco;
286 BoardPower=TCU01Reset;
287 AddExState(&latch[0], 1, 0, "LATC");