c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * |
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. |
10 | * |
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. |
15 | * |
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 |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
23 | static uint8 cmd; |
24 | static uint8 latch[8]; |
25 | #define CHRRAM (GameMemBlock) |
26 | |
27 | static void S74LS374NSynco(void) |
28 | { |
29 | setprg32(0x8000,latch[0]); |
30 | setchr8(latch[1]); |
31 | setmirror(latch[2]&1); |
32 | // setchr8(6); |
33 | } |
34 | |
35 | static DECLFW(S74LS374NWrite) |
36 | { |
37 | //printf("$%04x:$%02x\n",A,V); |
38 | A&=0x4101; |
39 | if(A==0x4100) |
40 | cmd=V&7; |
41 | else |
42 | { |
43 | switch(cmd) |
44 | { |
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; |
50 | } |
51 | S74LS374NSynco(); |
52 | } |
53 | } |
54 | |
55 | static void S74LS374NReset(void) |
56 | { |
57 | latch[0]=latch[2]=0; |
58 | latch[1]=3; |
59 | S74LS374NSynco(); |
60 | SetReadHandler(0x8000,0xFFFF,CartBR); |
61 | SetWriteHandler(0x4100,0x7FFF,S74LS374NWrite); |
62 | } |
63 | |
64 | static void S74LS374NRestore(int version) |
65 | { |
66 | S74LS374NSynco(); |
67 | } |
68 | |
69 | void S74LS374N_Init(void) |
70 | { |
71 | BoardPower=S74LS374NReset; |
72 | GameStateRestore=S74LS374NRestore; |
73 | AddExState(latch, 3, 0, "LATC"); |
74 | AddExState(&cmd, 1, 0, "CMD"); |
75 | } |
76 | |
77 | static int type; |
78 | static void S8259Synco(void) |
79 | { |
80 | int x; |
81 | |
82 | setprg32(0x8000,latch[5]&7); |
83 | |
84 | if(!UNIFchrrama) // No CHR RAM? Then BS'ing is ok. |
85 | { |
86 | if(!type) |
87 | { |
88 | for(x=0;x<4;x++) |
89 | setchr2(0x800*x,(x&1)|((latch[x]&7)<<1)|((latch[4]&7)<<4)); |
90 | } |
91 | else |
92 | { |
93 | for(x=0;x<4;x++) |
94 | setchr2(0x800*x,(latch[x]&0x7)|((latch[4]&7)<<3)); |
95 | } |
96 | } |
97 | switch((latch[7]>>1)&3) |
98 | { |
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; |
103 | } |
104 | } |
105 | |
106 | static DECLFW(S8259Write) |
107 | { |
108 | A&=0x4101; |
109 | if(A==0x4100) cmd=V; |
110 | else |
111 | { |
112 | latch[cmd&7]=V; |
113 | S8259Synco(); |
114 | } |
115 | } |
116 | |
117 | static void S8259Reset(void) |
118 | { |
119 | int x; |
120 | cmd=0; |
121 | |
122 | for(x=0;x<8;x++) latch[x]=0; |
123 | if(UNIFchrrama) setchr8(0); |
124 | |
125 | S8259Synco(); |
126 | SetReadHandler(0x8000,0xFFFF,CartBR); |
127 | SetWriteHandler(0x4100,0x7FFF,S8259Write); |
128 | } |
129 | |
130 | static void S8259Restore(int version) |
131 | { |
132 | S8259Synco(); |
133 | } |
134 | |
135 | void S8259A_Init(void) |
136 | { |
137 | BoardPower=S8259Reset; |
138 | GameStateRestore=S8259Restore; |
139 | AddExState(latch, 8, 0, "LATC"); |
140 | AddExState(&cmd, 1, 0, "CMD"); |
141 | type=0; |
142 | |
143 | //if(!CHRsize[0]) |
144 | //{ |
145 | // SetupCartCHRMapping(0,CHRRAM,8192,1); |
146 | // AddExState(CHRRAM, 8192, 0, "CHRR"); |
147 | //} |
148 | } |
149 | |
150 | void S8259B_Init(void) |
151 | { |
152 | BoardPower=S8259Reset; |
153 | GameStateRestore=S8259Restore; |
154 | AddExState(latch, 8, 0, "LATC"); |
155 | AddExState(&cmd, 1, 0, "CMD"); |
156 | type=1; |
157 | } |
158 | |
159 | static void(*WSync)(void); |
160 | |
161 | static void SA0161MSynco() |
162 | { |
163 | setprg32(0x8000,(latch[0]>>3)&1); |
164 | setchr8(latch[0]&7); |
165 | } |
166 | |
167 | static DECLFW(SAWrite) |
168 | { |
169 | if(A&0x100) |
170 | { |
171 | latch[0]=V; |
172 | WSync(); |
173 | } |
174 | } |
175 | |
176 | static void SAReset(void) |
177 | { |
178 | latch[0]=0; |
179 | WSync(); |
180 | SetReadHandler(0x8000,0xFFFF,CartBR); |
181 | SetWriteHandler(0x4100,0x5FFF,SAWrite); |
182 | } |
183 | |
184 | void SA0161M_Init(void) |
185 | { |
186 | WSync=SA0161MSynco; |
187 | GameStateRestore=SA0161MSynco; |
188 | BoardPower=SAReset; |
189 | AddExState(&latch[0], 1, 0, "LATC"); |
190 | } |
191 | |
192 | static void SA72007Synco() |
193 | { |
194 | setprg32(0x8000,0); |
195 | setchr8(latch[0]>>7); |
196 | } |
197 | |
198 | void SA72007_Init(void) |
199 | { |
200 | WSync=SA72007Synco; |
201 | GameStateRestore=SA72007Synco; |
202 | BoardPower=SAReset; |
203 | AddExState(&latch[0], 1, 0, "LATC"); |
204 | } |
205 | |
206 | static void SA72008Synco() |
207 | { |
208 | setprg32(0x8000,(latch[0]>>2)&1); |
209 | setchr8(latch[0]&3); |
210 | } |
211 | |
212 | void SA72008_Init(void) |
213 | { |
214 | WSync=SA72008Synco; |
215 | GameStateRestore=SA72008Synco; |
216 | BoardPower=SAReset; |
217 | AddExState(&latch[0], 1, 0, "LATC"); |
218 | } |
219 | |
220 | static DECLFW(SADWrite) |
221 | { |
222 | latch[0]=V; |
223 | WSync(); |
224 | } |
225 | |
226 | static void SADReset(void) |
227 | { |
228 | latch[0]=0; |
229 | WSync(); |
230 | SetReadHandler(0x8000,0xFFFF,CartBR); |
231 | SetWriteHandler(0x8000,0xFFFF,SADWrite); |
232 | } |
233 | |
234 | static void SA0036Synco() |
235 | { |
236 | setprg32(0x8000,0); |
237 | setchr8(latch[0]>>7); |
238 | } |
239 | |
240 | static void SA0037Synco() |
241 | { |
242 | setprg32(0x8000,(latch[0]>>3)&1); |
243 | setchr8(latch[0]&7); |
244 | } |
245 | |
246 | void SA0036_Init(void) |
247 | { |
248 | WSync=SA0036Synco; |
249 | GameStateRestore=SA0036Synco; |
250 | BoardPower=SADReset; |
251 | AddExState(&latch[0], 1, 0, "LATC"); |
252 | } |
253 | |
254 | void SA0037_Init(void) |
255 | { |
256 | WSync=SA0037Synco; |
257 | GameStateRestore=SA0037Synco; |
258 | BoardPower=SADReset; |
259 | AddExState(&latch[0], 1, 0, "LATC"); |
260 | } |
261 | |
262 | static void TCU01Synco() |
263 | { |
264 | setprg32(0x8000,(latch[0]>>2)&1); |
265 | setchr8((latch[0]>>3)&0xF); |
266 | } |
267 | |
268 | static DECLFW(TCWrite) |
269 | { |
270 | if((A&0x103)==0x102) |
271 | latch[0]=V; |
272 | TCU01Synco(); |
273 | } |
274 | |
275 | static void TCU01Reset(void) |
276 | { |
277 | latch[0]=0; |
278 | SetReadHandler(0x8000,0xFFFF,CartBR); |
279 | SetWriteHandler(0x4100,0xFFFF,TCWrite); |
280 | TCU01Synco(); |
281 | } |
282 | |
283 | void TCU01_Init(void) |
284 | { |
285 | GameStateRestore=TCU01Synco; |
286 | BoardPower=TCU01Reset; |
287 | AddExState(&latch[0], 1, 0, "LATC"); |
288 | } |
289 | |