1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
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. *
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. *
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 ***************************************************************************/
27 #ifdef USE_LIBRETRO_VFS
28 #include <streams/file_stream_transforms.h>
34 #define TX_EMPTY 0x0004
35 #define PARITY_ERR 0x0008
36 #define RX_OVERRUN 0x0010
37 #define FRAMING_ERR 0x0020
38 #define SYNC_DETECT 0x0040
44 #define TX_PERM 0x0001
46 #define RX_PERM 0x0004
48 #define RESET_ERR 0x0010
50 #define SIO_RESET 0x0040
52 // *** FOR WORKS ON PADS AND MEMORY CARDS *****
54 static unsigned char buf[256];
55 static unsigned char cardh1[4] = { 0xff, 0x08, 0x5a, 0x5d };
56 static unsigned char cardh2[4] = { 0xff, 0x08, 0x5a, 0x5d };
58 // Transfer Ready and the Buffer is Empty
59 // static unsigned short StatReg = 0x002b;
60 static unsigned short StatReg = TX_RDY | TX_EMPTY;
61 static unsigned short ModeReg;
62 static unsigned short CtrlReg;
63 static unsigned short BaudReg;
65 static unsigned int bufcount;
66 static unsigned int parp;
67 static unsigned int mcdst, rdwr;
68 static unsigned char adrH, adrL;
69 static unsigned int padst;
71 char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE];
74 #define SIO_INT(eCycle) { \
75 psxRegs.interrupt |= (1 << PSXINT_SIO); \
76 psxRegs.intCycle[PSXINT_SIO].cycle = eCycle; \
77 psxRegs.intCycle[PSXINT_SIO].sCycle = psxRegs.cycle; \
78 new_dyna_set_event(PSXINT_SIO, eCycle); \
82 // 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz)
83 // TODO: add SioModePrescaler and BaudReg
84 #define SIO_CYCLES 535
86 void sioWrite8(unsigned char value) {
89 s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
90 printf("%d:%03d sio write8 %04x %02x\n", frame_counter,
91 (s32)(framec / (PSXCLK / 60 / 263.0f)), CtrlReg, value);
95 if ((value & 0x40) == 0x40) {
97 switch (CtrlReg & 0x2002) {
99 buf[parp] = PAD1_poll(value, &more_data);
102 buf[parp] = PAD2_poll(value, &more_data);
115 switch (CtrlReg & 0x2002) {
116 case 0x0002: buf[parp] = PAD1_poll(value, &more_data); break;
117 case 0x2002: buf[parp] = PAD2_poll(value, &more_data); break;
130 if (rdwr) { parp++; return; }
133 case 0x52: rdwr = 1; break;
134 case 0x57: rdwr = 2; break;
163 switch (CtrlReg & 0x2002) {
165 memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128);
168 memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128);
174 for (i = 2; i < 128 + 4; i++)
194 if ((rdwr == 1 && parp == 132) ||
195 (rdwr == 2 && parp == 129)) {
196 // clear "new card" flags
197 if (CtrlReg & 0x2000)
203 if (parp < 128) buf[parp + 1] = value;
210 case 0x01: // start pad
211 StatReg |= RX_RDY; // Transfer is Ready
213 switch (CtrlReg & 0x2002) {
214 case 0x0002: buf[0] = PAD1_startPoll(1); break;
215 case 0x2002: buf[0] = PAD2_startPoll(2); break;
222 case 0x81: // start memcard
223 if (CtrlReg & 0x2000)
227 memcpy(buf, cardh2, 4);
233 memcpy(buf, cardh1, 4);
252 void sioWriteStat16(unsigned short value) {
255 void sioWriteMode16(unsigned short value) {
259 void sioWriteCtrl16(unsigned short value) {
260 CtrlReg = value & ~RESET_ERR;
261 if (value & RESET_ERR) StatReg &= ~IRQ;
262 if ((CtrlReg & SIO_RESET) || !(CtrlReg & DTR)) {
263 padst = 0; mcdst = 0; parp = 0;
264 StatReg = TX_RDY | TX_EMPTY;
265 psxRegs.interrupt &= ~(1 << PSXINT_SIO);
269 void sioWriteBaud16(unsigned short value) {
273 unsigned char sioRead8() {
274 unsigned char ret = 0;
276 if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
277 // StatReg &= ~RX_OVERRUN;
279 if (parp == bufcount) {
280 StatReg &= ~RX_RDY; // Receive is not Ready now
284 switch (CtrlReg & 0x2002) {
286 memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
287 SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128);
290 memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
291 SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128);
296 if (padst == 2) padst = 0;
305 s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
306 printf("%d:%03d sio read8 %04x %02x\n", frame_counter,
307 (s32)((float)framec / (PSXCLK / 60 / 263.0f)), CtrlReg, ret);
312 unsigned short sioReadStat16() {
316 unsigned short sioReadMode16() {
320 unsigned short sioReadCtrl16() {
324 unsigned short sioReadBaud16() {
330 SysMessage(_("Connection closed!\n"));
333 CdromLabel[0] = '\0';
338 void sioInterrupt() {
340 PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
342 // SysPrintf("Sio Interrupt\n");
343 if (!(StatReg & IRQ)) {
345 psxHu32ref(0x1070) |= SWAPu32(0x80);
349 void LoadMcd(int mcd, char *str) {
353 if (mcd != 1 && mcd != 2)
358 cardh1[1] |= 8; // mark as new
365 McdDisable[mcd - 1] = 0;
367 // memcard1 is handled by libretro
372 if (str == NULL || strcmp(str, "none") == 0) {
373 McdDisable[mcd - 1] = 1;
379 f = fopen(str, "rb");
381 SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
383 f = fopen(str, "rb");
387 if (stat(str, &buf) != -1) {
388 if (buf.st_size == MCD_SIZE + 64)
389 fseek(f, 64, SEEK_SET);
390 else if(buf.st_size == MCD_SIZE + 3904)
391 fseek(f, 3904, SEEK_SET);
393 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
395 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
397 memset(data, 0x00, MCD_SIZE);
402 SysMessage(_("Memory card %s failed to load!\n"), str);
406 SysPrintf(_("Loading memory card %s\n"), str);
407 if (stat(str, &buf) != -1) {
408 if (buf.st_size == MCD_SIZE + 64)
409 fseek(f, 64, SEEK_SET);
410 else if(buf.st_size == MCD_SIZE + 3904)
411 fseek(f, 3904, SEEK_SET);
413 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
415 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
417 memset(data, 0x00, MCD_SIZE);
423 void LoadMcds(char *mcd1, char *mcd2) {
428 void SaveMcd(char *mcd, char *data, uint32_t adr, int size) {
431 if (mcd == NULL || *mcd == 0 || strcmp(mcd, "none") == 0)
434 f = fopen(mcd, "r+b");
438 if (stat(mcd, &buf) != -1) {
439 if (buf.st_size == MCD_SIZE + 64)
440 fseek(f, adr + 64, SEEK_SET);
441 else if (buf.st_size == MCD_SIZE + 3904)
442 fseek(f, adr + 3904, SEEK_SET);
444 fseek(f, adr, SEEK_SET);
446 fseek(f, adr, SEEK_SET);
448 fwrite(data + adr, 1, size, f);
454 // try to create it again if we can't open it
455 f = fopen(mcd, "wb");
457 fwrite(data, 1, MCD_SIZE, f);
462 ConvertMcd(mcd, data);
465 void CreateMcd(char *mcd) {
471 f = fopen(mcd, "wb");
475 if (stat(mcd, &buf) != -1) {
476 if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) {
500 for (i = 0; i < 7; i++) {
514 for (i = 0; i < 14; i++) {
521 while (s-- > (MCD_SIZE + 1))
523 } else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) {
533 for (i = 0; i < 3; i++) {
546 while (s-- > (MCD_SIZE + 1))
554 while (s-- > (MCD_SIZE - 127))
559 for (i = 0; i < 15; i++) { // 15 blocks
580 for (j = 0; j < 117; j++) {
588 for (i = 0; i < 20; i++) {
609 for (j = 0; j < 118; j++) {
621 void ConvertMcd(char *mcd, char *data) {
626 if (strstr(mcd, ".gme")) {
627 f = fopen(mcd, "wb");
629 fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
632 f = fopen(mcd, "r+");
633 if (f == NULL) return;
646 for (i = 0; i < 7; i++) {
659 while (s-- > (MCD_SIZE+1)) fputc(0, f);
661 } else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) {
662 f = fopen(mcd, "wb");
664 fwrite(data-64, 1, MCD_SIZE+64, f);
667 f = fopen(mcd, "r+");
668 if (f == NULL) return;
682 while (s-- > (MCD_SIZE+1)) fputc(0, f);
685 f = fopen(mcd, "wb");
687 fwrite(data, 1, MCD_SIZE, f);
693 void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
694 char *data = NULL, *ptr, *str, *sstr;
695 unsigned short clut[16];
699 memset(Info, 0, sizeof(McdBlock));
701 if (mcd != 1 && mcd != 2)
704 if (McdDisable[mcd - 1])
707 if (mcd == 1) data = Mcd1Data;
708 if (mcd == 2) data = Mcd2Data;
710 ptr = data + block * 8192 + 2;
712 Info->IconCount = *ptr & 0x3;
721 for (i = 0; i < 48; i++) {
726 // Convert ASCII characters to half-width
727 if (c >= 0x8281 && c <= 0x829A)
728 c = (c - 0x8281) + 'a';
729 else if (c >= 0x824F && c <= 0x827A)
730 c = (c - 0x824F) + '0';
731 else if (c == 0x8140) c = ' ';
732 else if (c == 0x8143) c = ',';
733 else if (c == 0x8144) c = '.';
734 else if (c == 0x8146) c = ':';
735 else if (c == 0x8147) c = ';';
736 else if (c == 0x8148) c = '?';
737 else if (c == 0x8149) c = '!';
738 else if (c == 0x815E) c = '/';
739 else if (c == 0x8168) c = '"';
740 else if (c == 0x8169) c = '(';
741 else if (c == 0x816A) c = ')';
742 else if (c == 0x816D) c = '[';
743 else if (c == 0x816E) c = ']';
744 else if (c == 0x817C) c = '-';
747 sstr[x++] = *ptr++; sstr[x++] = *ptr++;
751 str[i] = sstr[x++] = c;
758 ptr = data + block * 8192 + 0x60; // icon palette data
760 for (i = 0; i < 16; i++) {
761 clut[i] = *((unsigned short *)ptr);
765 for (i = 0; i < Info->IconCount; i++) {
766 short *icon = &Info->Icon[i * 16 * 16];
768 ptr = data + block * 8192 + 128 + 128 * i; // icon data
770 for (x = 0; x < 16 * 16; x++) {
771 icon[x++] = clut[*ptr & 0xf];
772 icon[x] = clut[*ptr >> 4];
777 ptr = data + block * 128;
782 strncpy(Info->ID, ptr, 12);
784 strncpy(Info->Name, ptr, 16);
787 int sioFreeze(void *f, int Mode) {
788 gzfreeze(buf, sizeof(buf));
789 gzfreeze(&StatReg, sizeof(StatReg));
790 gzfreeze(&ModeReg, sizeof(ModeReg));
791 gzfreeze(&CtrlReg, sizeof(CtrlReg));
792 gzfreeze(&BaudReg, sizeof(BaudReg));
793 gzfreeze(&bufcount, sizeof(bufcount));
794 gzfreeze(&parp, sizeof(parp));
795 gzfreeze(&mcdst, sizeof(mcdst));
796 gzfreeze(&rdwr, sizeof(rdwr));
797 gzfreeze(&adrH, sizeof(adrH));
798 gzfreeze(&adrL, sizeof(adrL));
799 gzfreeze(&padst, sizeof(padst));