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1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * SIO functions. | |
22 | */ | |
23 | ||
24 | #include "sio.h" | |
25 | #include <sys/stat.h> | |
26 | ||
27 | // Status Flags | |
28 | #define TX_RDY 0x0001 | |
29 | #define RX_RDY 0x0002 | |
30 | #define TX_EMPTY 0x0004 | |
31 | #define PARITY_ERR 0x0008 | |
32 | #define RX_OVERRUN 0x0010 | |
33 | #define FRAMING_ERR 0x0020 | |
34 | #define SYNC_DETECT 0x0040 | |
35 | #define DSR 0x0080 | |
36 | #define CTS 0x0100 | |
37 | #define IRQ 0x0200 | |
38 | ||
39 | // Control Flags | |
40 | #define TX_PERM 0x0001 | |
41 | #define DTR 0x0002 | |
42 | #define RX_PERM 0x0004 | |
43 | #define BREAK 0x0008 | |
44 | #define RESET_ERR 0x0010 | |
45 | #define RTS 0x0020 | |
46 | #define SIO_RESET 0x0040 | |
47 | ||
48 | // *** FOR WORKS ON PADS AND MEMORY CARDS ***** | |
49 | ||
50 | static unsigned char buf[256]; | |
51 | unsigned char cardh[4] = { 0x00, 0x00, 0x5a, 0x5d }; | |
52 | ||
53 | // Transfer Ready and the Buffer is Empty | |
54 | // static unsigned short StatReg = 0x002b; | |
55 | static unsigned short StatReg = TX_RDY | TX_EMPTY; | |
56 | static unsigned short ModeReg; | |
57 | static unsigned short CtrlReg; | |
58 | static unsigned short BaudReg; | |
59 | ||
60 | static unsigned int bufcount; | |
61 | static unsigned int parp; | |
62 | static unsigned int mcdst, rdwr; | |
63 | static unsigned char adrH, adrL; | |
64 | static unsigned int padst; | |
65 | ||
66 | char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE]; | |
67 | ||
68 | // clk cycle byte | |
69 | // 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz) | |
70 | // TODO: add SioModePrescaler and BaudReg | |
71 | static inline void SIO_INT() { | |
72 | if (!Config.Sio) { | |
73 | psxRegs.interrupt |= 0x80; | |
74 | psxRegs.intCycle[7 + 1] = 400; | |
75 | psxRegs.intCycle[7] = psxRegs.cycle; | |
76 | } | |
77 | } | |
78 | ||
79 | void sioWrite8(unsigned char value) { | |
80 | #ifdef PAD_LOG | |
81 | PAD_LOG("sio write8 %x\n", value); | |
82 | #endif | |
83 | switch (padst) { | |
84 | case 1: SIO_INT(); | |
85 | if ((value & 0x40) == 0x40) { | |
86 | padst = 2; parp = 1; | |
87 | if (!Config.UseNet) { | |
88 | switch (CtrlReg & 0x2002) { | |
89 | case 0x0002: | |
90 | buf[parp] = PAD1_poll(value); | |
91 | break; | |
92 | case 0x2002: | |
93 | buf[parp] = PAD2_poll(value); | |
94 | break; | |
95 | } | |
96 | }/* else { | |
97 | // SysPrintf("%x: %x, %x, %x, %x\n", CtrlReg&0x2002, buf[2], buf[3], buf[4], buf[5]); | |
98 | }*/ | |
99 | ||
100 | if (!(buf[parp] & 0x0f)) { | |
101 | bufcount = 2 + 32; | |
102 | } else { | |
103 | bufcount = 2 + (buf[parp] & 0x0f) * 2; | |
104 | } | |
105 | if (buf[parp] == 0x41) { | |
106 | switch (value) { | |
107 | case 0x43: | |
108 | buf[1] = 0x43; | |
109 | break; | |
110 | case 0x45: | |
111 | buf[1] = 0xf3; | |
112 | break; | |
113 | } | |
114 | } | |
115 | } | |
116 | else padst = 0; | |
117 | return; | |
118 | case 2: | |
119 | parp++; | |
120 | /* if (buf[1] == 0x45) { | |
121 | buf[parp] = 0; | |
122 | SIO_INT(); | |
123 | return; | |
124 | }*/ | |
125 | if (!Config.UseNet) { | |
126 | switch (CtrlReg & 0x2002) { | |
127 | case 0x0002: buf[parp] = PAD1_poll(value); break; | |
128 | case 0x2002: buf[parp] = PAD2_poll(value); break; | |
129 | } | |
130 | } | |
131 | ||
132 | if (parp == bufcount) { padst = 0; return; } | |
133 | SIO_INT(); | |
134 | return; | |
135 | } | |
136 | ||
137 | switch (mcdst) { | |
138 | case 1: | |
139 | SIO_INT(); | |
140 | if (rdwr) { parp++; return; } | |
141 | parp = 1; | |
142 | switch (value) { | |
143 | case 0x52: rdwr = 1; break; | |
144 | case 0x57: rdwr = 2; break; | |
145 | default: mcdst = 0; | |
146 | } | |
147 | return; | |
148 | case 2: // address H | |
149 | SIO_INT(); | |
150 | adrH = value; | |
151 | *buf = 0; | |
152 | parp = 0; | |
153 | bufcount = 1; | |
154 | mcdst = 3; | |
155 | return; | |
156 | case 3: // address L | |
157 | SIO_INT(); | |
158 | adrL = value; | |
159 | *buf = adrH; | |
160 | parp = 0; | |
161 | bufcount = 1; | |
162 | mcdst = 4; | |
163 | return; | |
164 | case 4: | |
165 | SIO_INT(); | |
166 | parp = 0; | |
167 | switch (rdwr) { | |
168 | case 1: // read | |
169 | buf[0] = 0x5c; | |
170 | buf[1] = 0x5d; | |
171 | buf[2] = adrH; | |
172 | buf[3] = adrL; | |
173 | switch (CtrlReg & 0x2002) { | |
174 | case 0x0002: | |
175 | memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128); | |
176 | break; | |
177 | case 0x2002: | |
178 | memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128); | |
179 | break; | |
180 | } | |
181 | { | |
182 | char xor = 0; | |
183 | int i; | |
184 | for (i = 2; i < 128 + 4; i++) | |
185 | xor ^= buf[i]; | |
186 | buf[132] = xor; | |
187 | } | |
188 | buf[133] = 0x47; | |
189 | bufcount = 133; | |
190 | break; | |
191 | case 2: // write | |
192 | buf[0] = adrL; | |
193 | buf[1] = value; | |
194 | buf[129] = 0x5c; | |
195 | buf[130] = 0x5d; | |
196 | buf[131] = 0x47; | |
197 | bufcount = 131; | |
198 | break; | |
199 | } | |
200 | mcdst = 5; | |
201 | return; | |
202 | case 5: | |
203 | parp++; | |
204 | if (rdwr == 2) { | |
205 | if (parp < 128) buf[parp + 1] = value; | |
206 | } | |
207 | SIO_INT(); | |
208 | return; | |
209 | } | |
210 | ||
211 | switch (value) { | |
212 | case 0x01: // start pad | |
213 | StatReg |= RX_RDY; // Transfer is Ready | |
214 | ||
215 | if (!Config.UseNet) { | |
216 | switch (CtrlReg & 0x2002) { | |
217 | case 0x0002: buf[0] = PAD1_startPoll(1); break; | |
218 | case 0x2002: buf[0] = PAD2_startPoll(2); break; | |
219 | } | |
220 | } else { | |
221 | if ((CtrlReg & 0x2002) == 0x0002) { | |
222 | int i, j; | |
223 | ||
224 | PAD1_startPoll(1); | |
225 | buf[0] = 0; | |
226 | buf[1] = PAD1_poll(0x42); | |
227 | if (!(buf[1] & 0x0f)) { | |
228 | bufcount = 32; | |
229 | } else { | |
230 | bufcount = (buf[1] & 0x0f) * 2; | |
231 | } | |
232 | buf[2] = PAD1_poll(0); | |
233 | i = 3; | |
234 | j = bufcount; | |
235 | while (j--) { | |
236 | buf[i++] = PAD1_poll(0); | |
237 | } | |
238 | bufcount+= 3; | |
239 | ||
240 | if (NET_sendPadData(buf, bufcount) == -1) | |
241 | netError(); | |
242 | ||
243 | if (NET_recvPadData(buf, 1) == -1) | |
244 | netError(); | |
245 | if (NET_recvPadData(buf + 128, 2) == -1) | |
246 | netError(); | |
247 | } else { | |
248 | memcpy(buf, buf + 128, 32); | |
249 | } | |
250 | } | |
251 | ||
252 | bufcount = 2; | |
253 | parp = 0; | |
254 | padst = 1; | |
255 | SIO_INT(); | |
256 | return; | |
257 | case 0x81: // start memcard | |
258 | StatReg |= RX_RDY; | |
259 | memcpy(buf, cardh, 4); | |
260 | parp = 0; | |
261 | bufcount = 3; | |
262 | mcdst = 1; | |
263 | rdwr = 0; | |
264 | SIO_INT(); | |
265 | return; | |
266 | } | |
267 | } | |
268 | ||
269 | void sioWriteStat16(unsigned short value) { | |
270 | } | |
271 | ||
272 | void sioWriteMode16(unsigned short value) { | |
273 | ModeReg = value; | |
274 | } | |
275 | ||
276 | void sioWriteCtrl16(unsigned short value) { | |
277 | CtrlReg = value & ~RESET_ERR; | |
278 | if (value & RESET_ERR) StatReg &= ~IRQ; | |
279 | if ((CtrlReg & SIO_RESET) || (!CtrlReg)) { | |
280 | padst = 0; mcdst = 0; parp = 0; | |
281 | StatReg = TX_RDY | TX_EMPTY; | |
282 | psxRegs.interrupt &= ~0x80; | |
283 | } | |
284 | } | |
285 | ||
286 | void sioWriteBaud16(unsigned short value) { | |
287 | BaudReg = value; | |
288 | } | |
289 | ||
290 | unsigned char sioRead8() { | |
291 | unsigned char ret = 0; | |
292 | ||
293 | if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) { | |
294 | // StatReg &= ~RX_OVERRUN; | |
295 | ret = buf[parp]; | |
296 | if (parp == bufcount) { | |
297 | StatReg &= ~RX_RDY; // Receive is not Ready now | |
298 | if (mcdst == 5) { | |
299 | mcdst = 0; | |
300 | if (rdwr == 2) { | |
301 | switch (CtrlReg & 0x2002) { | |
302 | case 0x0002: | |
303 | memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128); | |
304 | SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128); | |
305 | break; | |
306 | case 0x2002: | |
307 | memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128); | |
308 | SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128); | |
309 | break; | |
310 | } | |
311 | } | |
312 | } | |
313 | if (padst == 2) padst = 0; | |
314 | if (mcdst == 1) { | |
315 | mcdst = 2; | |
316 | StatReg|= RX_RDY; | |
317 | } | |
318 | } | |
319 | } | |
320 | ||
321 | #ifdef PAD_LOG | |
322 | PAD_LOG("sio read8 ;ret = %x\n", ret); | |
323 | #endif | |
324 | return ret; | |
325 | } | |
326 | ||
327 | unsigned short sioReadStat16() { | |
328 | return StatReg; | |
329 | } | |
330 | ||
331 | unsigned short sioReadMode16() { | |
332 | return ModeReg; | |
333 | } | |
334 | ||
335 | unsigned short sioReadCtrl16() { | |
336 | return CtrlReg; | |
337 | } | |
338 | ||
339 | unsigned short sioReadBaud16() { | |
340 | return BaudReg; | |
341 | } | |
342 | ||
343 | void netError() { | |
344 | ClosePlugins(); | |
345 | SysMessage(_("Connection closed!\n")); | |
346 | ||
347 | CdromId[0] = '\0'; | |
348 | CdromLabel[0] = '\0'; | |
349 | ||
350 | SysRunGui(); | |
351 | } | |
352 | ||
353 | void sioInterrupt() { | |
354 | #ifdef PAD_LOG | |
355 | PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status); | |
356 | #endif | |
357 | // SysPrintf("Sio Interrupt\n"); | |
358 | StatReg |= IRQ; | |
359 | psxHu32ref(0x1070) |= SWAPu32(0x80); | |
360 | } | |
361 | ||
362 | void LoadMcd(int mcd, char *str) { | |
363 | FILE *f; | |
364 | char *data = NULL; | |
365 | ||
366 | if (mcd == 1) data = Mcd1Data; | |
367 | if (mcd == 2) data = Mcd2Data; | |
368 | ||
369 | if (*str == 0) { | |
370 | sprintf(str, "memcards/card%d.mcd", mcd); | |
371 | SysPrintf(_("No memory card value was specified - creating a default card %s\n"), str); | |
372 | } | |
373 | f = fopen(str, "rb"); | |
374 | if (f == NULL) { | |
375 | SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str); | |
376 | CreateMcd(str); | |
377 | f = fopen(str, "rb"); | |
378 | if (f != NULL) { | |
379 | struct stat buf; | |
380 | ||
381 | if (stat(str, &buf) != -1) { | |
382 | if (buf.st_size == MCD_SIZE + 64) | |
383 | fseek(f, 64, SEEK_SET); | |
384 | else if(buf.st_size == MCD_SIZE + 3904) | |
385 | fseek(f, 3904, SEEK_SET); | |
386 | } | |
387 | fread(data, 1, MCD_SIZE, f); | |
388 | fclose(f); | |
389 | } | |
390 | else | |
391 | SysMessage(_("Memory card %s failed to load!\n"), str); | |
392 | } | |
393 | else { | |
394 | struct stat buf; | |
395 | SysPrintf(_("Loading memory card %s\n"), str); | |
396 | if (stat(str, &buf) != -1) { | |
397 | if (buf.st_size == MCD_SIZE + 64) | |
398 | fseek(f, 64, SEEK_SET); | |
399 | else if(buf.st_size == MCD_SIZE + 3904) | |
400 | fseek(f, 3904, SEEK_SET); | |
401 | } | |
402 | fread(data, 1, MCD_SIZE, f); | |
403 | fclose(f); | |
404 | } | |
405 | } | |
406 | ||
407 | void LoadMcds(char *mcd1, char *mcd2) { | |
408 | LoadMcd(1, mcd1); | |
409 | LoadMcd(2, mcd2); | |
410 | } | |
411 | ||
412 | void SaveMcd(char *mcd, char *data, uint32_t adr, int size) { | |
413 | FILE *f; | |
414 | ||
415 | f = fopen(mcd, "r+b"); | |
416 | if (f != NULL) { | |
417 | struct stat buf; | |
418 | ||
419 | if (stat(mcd, &buf) != -1) { | |
420 | if (buf.st_size == MCD_SIZE + 64) | |
421 | fseek(f, adr + 64, SEEK_SET); | |
422 | else if (buf.st_size == MCD_SIZE + 3904) | |
423 | fseek(f, adr + 3904, SEEK_SET); | |
424 | else | |
425 | fseek(f, adr, SEEK_SET); | |
426 | } else | |
427 | fseek(f, adr, SEEK_SET); | |
428 | ||
429 | fwrite(data + adr, 1, size, f); | |
430 | fclose(f); | |
431 | return; | |
432 | } | |
433 | ||
434 | #if 0 | |
435 | // try to create it again if we can't open it | |
436 | f = fopen(mcd, "wb"); | |
437 | if (f != NULL) { | |
438 | fwrite(data, 1, MCD_SIZE, f); | |
439 | fclose(f); | |
440 | } | |
441 | #endif | |
442 | ||
443 | ConvertMcd(mcd, data); | |
444 | } | |
445 | ||
446 | void CreateMcd(char *mcd) { | |
447 | FILE *f; | |
448 | struct stat buf; | |
449 | int s = MCD_SIZE; | |
450 | int i = 0, j; | |
451 | ||
452 | f = fopen(mcd, "wb"); | |
453 | if (f == NULL) | |
454 | return; | |
455 | ||
456 | if (stat(mcd, &buf) != -1) { | |
457 | if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) { | |
458 | s = s + 3904; | |
459 | fputc('1', f); | |
460 | s--; | |
461 | fputc('2', f); | |
462 | s--; | |
463 | fputc('3', f); | |
464 | s--; | |
465 | fputc('-', f); | |
466 | s--; | |
467 | fputc('4', f); | |
468 | s--; | |
469 | fputc('5', f); | |
470 | s--; | |
471 | fputc('6', f); | |
472 | s--; | |
473 | fputc('-', f); | |
474 | s--; | |
475 | fputc('S', f); | |
476 | s--; | |
477 | fputc('T', f); | |
478 | s--; | |
479 | fputc('D', f); | |
480 | s--; | |
481 | for (i = 0; i < 7; i++) { | |
482 | fputc(0, f); | |
483 | s--; | |
484 | } | |
485 | fputc(1, f); | |
486 | s--; | |
487 | fputc(0, f); | |
488 | s--; | |
489 | fputc(1, f); | |
490 | s--; | |
491 | fputc('M', f); | |
492 | s--; | |
493 | fputc('Q', f); | |
494 | s--; | |
495 | for (i = 0; i < 14; i++) { | |
496 | fputc(0xa0, f); | |
497 | s--; | |
498 | } | |
499 | fputc(0, f); | |
500 | s--; | |
501 | fputc(0xff, f); | |
502 | while (s-- > (MCD_SIZE + 1)) | |
503 | fputc(0, f); | |
504 | } else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) { | |
505 | s = s + 64; | |
506 | fputc('V', f); | |
507 | s--; | |
508 | fputc('g', f); | |
509 | s--; | |
510 | fputc('s', f); | |
511 | s--; | |
512 | fputc('M', f); | |
513 | s--; | |
514 | for (i = 0; i < 3; i++) { | |
515 | fputc(1, f); | |
516 | s--; | |
517 | fputc(0, f); | |
518 | s--; | |
519 | fputc(0, f); | |
520 | s--; | |
521 | fputc(0, f); | |
522 | s--; | |
523 | } | |
524 | fputc(0, f); | |
525 | s--; | |
526 | fputc(2, f); | |
527 | while (s-- > (MCD_SIZE + 1)) | |
528 | fputc(0, f); | |
529 | } | |
530 | } | |
531 | fputc('M', f); | |
532 | s--; | |
533 | fputc('C', f); | |
534 | s--; | |
535 | while (s-- > (MCD_SIZE - 127)) | |
536 | fputc(0, f); | |
537 | fputc(0xe, f); | |
538 | s--; | |
539 | ||
540 | for (i = 0; i < 15; i++) { // 15 blocks | |
541 | fputc(0xa0, f); | |
542 | s--; | |
543 | fputc(0x00, f); | |
544 | s--; | |
545 | fputc(0x00, f); | |
546 | s--; | |
547 | fputc(0x00, f); | |
548 | s--; | |
549 | fputc(0x00, f); | |
550 | s--; | |
551 | fputc(0x00, f); | |
552 | s--; | |
553 | fputc(0x00, f); | |
554 | s--; | |
555 | fputc(0x00, f); | |
556 | s--; | |
557 | fputc(0xff, f); | |
558 | s--; | |
559 | fputc(0xff, f); | |
560 | s--; | |
561 | for (j = 0; j < 117; j++) { | |
562 | fputc(0x00, f); | |
563 | s--; | |
564 | } | |
565 | fputc(0xa0, f); | |
566 | s--; | |
567 | } | |
568 | ||
569 | for (i = 0; i < 20; i++) { | |
570 | fputc(0xff, f); | |
571 | s--; | |
572 | fputc(0xff, f); | |
573 | s--; | |
574 | fputc(0xff, f); | |
575 | s--; | |
576 | fputc(0xff, f); | |
577 | s--; | |
578 | fputc(0x00, f); | |
579 | s--; | |
580 | fputc(0x00, f); | |
581 | s--; | |
582 | fputc(0x00, f); | |
583 | s--; | |
584 | fputc(0x00, f); | |
585 | s--; | |
586 | fputc(0xff, f); | |
587 | s--; | |
588 | fputc(0xff, f); | |
589 | s--; | |
590 | for (j = 0; j < 118; j++) { | |
591 | fputc(0x00, f); | |
592 | s--; | |
593 | } | |
594 | } | |
595 | ||
596 | while ((s--) >= 0) | |
597 | fputc(0, f); | |
598 | ||
599 | fclose(f); | |
600 | } | |
601 | ||
602 | void ConvertMcd(char *mcd, char *data) { | |
603 | FILE *f; | |
604 | int i = 0; | |
605 | int s = MCD_SIZE; | |
606 | ||
607 | if (strstr(mcd, ".gme")) { | |
608 | f = fopen(mcd, "wb"); | |
609 | if (f != NULL) { | |
610 | fwrite(data - 3904, 1, MCD_SIZE + 3904, f); | |
611 | fclose(f); | |
612 | } | |
613 | f = fopen(mcd, "r+"); | |
614 | s = s + 3904; | |
615 | fputc('1', f); s--; | |
616 | fputc('2', f); s--; | |
617 | fputc('3', f); s--; | |
618 | fputc('-', f); s--; | |
619 | fputc('4', f); s--; | |
620 | fputc('5', f); s--; | |
621 | fputc('6', f); s--; | |
622 | fputc('-', f); s--; | |
623 | fputc('S', f); s--; | |
624 | fputc('T', f); s--; | |
625 | fputc('D', f); s--; | |
626 | for (i = 0; i < 7; i++) { | |
627 | fputc(0, f); s--; | |
628 | } | |
629 | fputc(1, f); s--; | |
630 | fputc(0, f); s--; | |
631 | fputc(1, f); s--; | |
632 | fputc('M', f); s--; | |
633 | fputc('Q', f); s--; | |
634 | for(i=0;i<14;i++) { | |
635 | fputc(0xa0, f); s--; | |
636 | } | |
637 | fputc(0, f); s--; | |
638 | fputc(0xff, f); | |
639 | while (s-- > (MCD_SIZE+1)) fputc(0, f); | |
640 | fclose(f); | |
641 | } else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) { | |
642 | f = fopen(mcd, "wb"); | |
643 | if (f != NULL) { | |
644 | fwrite(data-64, 1, MCD_SIZE+64, f); | |
645 | fclose(f); | |
646 | } | |
647 | f = fopen(mcd, "r+"); | |
648 | s = s + 64; | |
649 | fputc('V', f); s--; | |
650 | fputc('g', f); s--; | |
651 | fputc('s', f); s--; | |
652 | fputc('M', f); s--; | |
653 | for(i=0;i<3;i++) { | |
654 | fputc(1, f); s--; | |
655 | fputc(0, f); s--; | |
656 | fputc(0, f); s--; | |
657 | fputc(0, f); s--; | |
658 | } | |
659 | fputc(0, f); s--; | |
660 | fputc(2, f); | |
661 | while (s-- > (MCD_SIZE+1)) fputc(0, f); | |
662 | fclose(f); | |
663 | } else { | |
664 | f = fopen(mcd, "wb"); | |
665 | if (f != NULL) { | |
666 | fwrite(data, 1, MCD_SIZE, f); | |
667 | fclose(f); | |
668 | } | |
669 | } | |
670 | } | |
671 | ||
672 | void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) { | |
673 | unsigned char *data = NULL, *ptr, *str, *sstr; | |
674 | unsigned short clut[16]; | |
675 | unsigned short c; | |
676 | int i, x; | |
677 | ||
678 | memset(Info, 0, sizeof(McdBlock)); | |
679 | ||
680 | if (mcd == 1) data = Mcd1Data; | |
681 | if (mcd == 2) data = Mcd2Data; | |
682 | ||
683 | ptr = data + block * 8192 + 2; | |
684 | ||
685 | Info->IconCount = *ptr & 0x3; | |
686 | ||
687 | ptr += 2; | |
688 | ||
689 | x = 0; | |
690 | ||
691 | str = Info->Title; | |
692 | sstr = Info->sTitle; | |
693 | ||
694 | for (i = 0; i < 48; i++) { | |
695 | c = *(ptr) << 8; | |
696 | c |= *(ptr + 1); | |
697 | if (!c) break; | |
698 | ||
699 | // Convert ASCII characters to half-width | |
700 | if (c >= 0x8281 && c <= 0x829A) | |
701 | c = (c - 0x8281) + 'a'; | |
702 | else if (c >= 0x824F && c <= 0x827A) | |
703 | c = (c - 0x824F) + '0'; | |
704 | else if (c == 0x8140) c = ' '; | |
705 | else if (c == 0x8143) c = ','; | |
706 | else if (c == 0x8144) c = '.'; | |
707 | else if (c == 0x8146) c = ':'; | |
708 | else if (c == 0x8147) c = ';'; | |
709 | else if (c == 0x8148) c = '?'; | |
710 | else if (c == 0x8149) c = '!'; | |
711 | else if (c == 0x815E) c = '/'; | |
712 | else if (c == 0x8168) c = '"'; | |
713 | else if (c == 0x8169) c = '('; | |
714 | else if (c == 0x816A) c = ')'; | |
715 | else if (c == 0x816D) c = '['; | |
716 | else if (c == 0x816E) c = ']'; | |
717 | else if (c == 0x817C) c = '-'; | |
718 | else { | |
719 | str[i] = ' '; | |
720 | sstr[x++] = *ptr++; sstr[x++] = *ptr++; | |
721 | continue; | |
722 | } | |
723 | ||
724 | str[i] = sstr[x++] = c; | |
725 | ptr += 2; | |
726 | } | |
727 | ||
728 | trim(str); | |
729 | trim(sstr); | |
730 | ||
731 | ptr = data + block * 8192 + 0x60; // icon palette data | |
732 | ||
733 | for (i = 0; i < 16; i++) { | |
734 | clut[i] = *((unsigned short *)ptr); | |
735 | ptr += 2; | |
736 | } | |
737 | ||
738 | for (i = 0; i < Info->IconCount; i++) { | |
739 | short *icon = &Info->Icon[i * 16 * 16]; | |
740 | ||
741 | ptr = data + block * 8192 + 128 + 128 * i; // icon data | |
742 | ||
743 | for (x = 0; x < 16 * 16; x++) { | |
744 | icon[x++] = clut[*ptr & 0xf]; | |
745 | icon[x] = clut[*ptr >> 4]; | |
746 | ptr++; | |
747 | } | |
748 | } | |
749 | ||
750 | ptr = data + block * 128; | |
751 | ||
752 | Info->Flags = *ptr; | |
753 | ||
754 | ptr += 0xa; | |
755 | strncpy(Info->ID, ptr, 12); | |
756 | ptr += 12; | |
757 | strncpy(Info->Name, ptr, 16); | |
758 | } | |
759 | ||
760 | int sioFreeze(gzFile f, int Mode) { | |
761 | gzfreeze(buf, sizeof(buf)); | |
762 | gzfreeze(&StatReg, sizeof(StatReg)); | |
763 | gzfreeze(&ModeReg, sizeof(ModeReg)); | |
764 | gzfreeze(&CtrlReg, sizeof(CtrlReg)); | |
765 | gzfreeze(&BaudReg, sizeof(BaudReg)); | |
766 | gzfreeze(&bufcount, sizeof(bufcount)); | |
767 | gzfreeze(&parp, sizeof(parp)); | |
768 | gzfreeze(&mcdst, sizeof(mcdst)); | |
769 | gzfreeze(&rdwr, sizeof(rdwr)); | |
770 | gzfreeze(&adrH, sizeof(adrH)); | |
771 | gzfreeze(&adrL, sizeof(adrL)); | |
772 | gzfreeze(&padst, sizeof(padst)); | |
773 | ||
774 | return 0; | |
775 | } |