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) { \
76 psxRegs.interrupt |= (1 << PSXINT_SIO); \
77 psxRegs.intCycle[PSXINT_SIO].cycle = eCycle; \
78 psxRegs.intCycle[PSXINT_SIO].sCycle = psxRegs.cycle; \
79 new_dyna_set_event(PSXINT_SIO, eCycle); \
84 // 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz)
85 // TODO: add SioModePrescaler and BaudReg
86 #define SIO_CYCLES 535
88 void sioWrite8(unsigned char value) {
90 PAD_LOG("sio write8 %x\n", value);
93 case 1: SIO_INT(SIO_CYCLES);
94 if ((value & 0x40) == 0x40) {
97 switch (CtrlReg & 0x2002) {
99 buf[parp] = PAD1_poll(value);
102 buf[parp] = PAD2_poll(value);
106 // SysPrintf("%x: %x, %x, %x, %x\n", CtrlReg&0x2002, buf[2], buf[3], buf[4], buf[5]);
109 if (!(buf[parp] & 0x0f)) {
112 bufcount = 2 + (buf[parp] & 0x0f) * 2;
114 if (buf[parp] == 0x41) {
124 // NegCon - Wipeout 3
125 if( buf[parp] == 0x23 ) {
143 /* if (buf[1] == 0x45) {
148 if (!Config.UseNet) {
149 switch (CtrlReg & 0x2002) {
150 case 0x0002: buf[parp] = PAD1_poll(value); break;
151 case 0x2002: buf[parp] = PAD2_poll(value); break;
155 if (parp == bufcount) { padst = 0; return; }
163 if (rdwr) { parp++; return; }
166 case 0x52: rdwr = 1; break;
167 case 0x57: rdwr = 2; break;
196 switch (CtrlReg & 0x2002) {
198 memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128);
201 memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128);
207 for (i = 2; i < 128 + 4; i++)
227 if ((rdwr == 1 && parp == 132) ||
228 (rdwr == 2 && parp == 129)) {
229 // clear "new card" flags
230 if (CtrlReg & 0x2000)
236 if (parp < 128) buf[parp + 1] = value;
243 case 0x01: // start pad
244 StatReg |= RX_RDY; // Transfer is Ready
246 if (!Config.UseNet) {
247 switch (CtrlReg & 0x2002) {
248 case 0x0002: buf[0] = PAD1_startPoll(1); break;
249 case 0x2002: buf[0] = PAD2_startPoll(2); break;
252 if ((CtrlReg & 0x2002) == 0x0002) {
257 buf[1] = PAD1_poll(0x42);
258 if (!(buf[1] & 0x0f)) {
261 bufcount = (buf[1] & 0x0f) * 2;
263 buf[2] = PAD1_poll(0);
267 buf[i++] = PAD1_poll(0);
271 if (NET_sendPadData(buf, bufcount) == -1)
274 if (NET_recvPadData(buf, 1) == -1)
276 if (NET_recvPadData(buf + 128, 2) == -1)
279 memcpy(buf, buf + 128, 32);
288 case 0x81: // start memcard
289 if (CtrlReg & 0x2000)
293 memcpy(buf, cardh2, 4);
299 memcpy(buf, cardh1, 4);
318 void sioWriteStat16(unsigned short value) {
321 void sioWriteMode16(unsigned short value) {
325 void sioWriteCtrl16(unsigned short value) {
326 CtrlReg = value & ~RESET_ERR;
327 if (value & RESET_ERR) StatReg &= ~IRQ;
328 if ((CtrlReg & SIO_RESET) || !(CtrlReg & DTR)) {
329 padst = 0; mcdst = 0; parp = 0;
330 StatReg = TX_RDY | TX_EMPTY;
331 psxRegs.interrupt &= ~(1 << PSXINT_SIO);
335 void sioWriteBaud16(unsigned short value) {
339 unsigned char sioRead8() {
340 unsigned char ret = 0;
342 if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
343 // StatReg &= ~RX_OVERRUN;
345 if (parp == bufcount) {
346 StatReg &= ~RX_RDY; // Receive is not Ready now
350 switch (CtrlReg & 0x2002) {
352 memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
353 SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128);
356 memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
357 SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128);
362 if (padst == 2) padst = 0;
371 PAD_LOG("sio read8 ;ret = %x\n", ret);
376 unsigned short sioReadStat16() {
380 unsigned short sioReadMode16() {
384 unsigned short sioReadCtrl16() {
388 unsigned short sioReadBaud16() {
394 SysMessage(_("Connection closed!\n"));
397 CdromLabel[0] = '\0';
402 void sioInterrupt() {
404 PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
406 // SysPrintf("Sio Interrupt\n");
407 if (!(StatReg & IRQ)) {
409 psxHu32ref(0x1070) |= SWAPu32(0x80);
413 void LoadMcd(int mcd, char *str) {
417 if (mcd != 1 && mcd != 2)
422 cardh1[1] |= 8; // mark as new
429 McdDisable[mcd - 1] = 0;
431 // memcard1 is handled by libretro
436 if (str == NULL || strcmp(str, "none") == 0) {
437 McdDisable[mcd - 1] = 1;
443 f = fopen(str, "rb");
445 SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
447 f = fopen(str, "rb");
451 if (stat(str, &buf) != -1) {
452 if (buf.st_size == MCD_SIZE + 64)
453 fseek(f, 64, SEEK_SET);
454 else if(buf.st_size == MCD_SIZE + 3904)
455 fseek(f, 3904, SEEK_SET);
457 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
459 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
461 memset(data, 0x00, MCD_SIZE);
466 SysMessage(_("Memory card %s failed to load!\n"), str);
470 SysPrintf(_("Loading memory card %s\n"), str);
471 if (stat(str, &buf) != -1) {
472 if (buf.st_size == MCD_SIZE + 64)
473 fseek(f, 64, SEEK_SET);
474 else if(buf.st_size == MCD_SIZE + 3904)
475 fseek(f, 3904, SEEK_SET);
477 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
479 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
481 memset(data, 0x00, MCD_SIZE);
487 void LoadMcds(char *mcd1, char *mcd2) {
492 void SaveMcd(char *mcd, char *data, uint32_t adr, int size) {
495 if (mcd == NULL || *mcd == 0 || strcmp(mcd, "none") == 0)
498 f = fopen(mcd, "r+b");
502 if (stat(mcd, &buf) != -1) {
503 if (buf.st_size == MCD_SIZE + 64)
504 fseek(f, adr + 64, SEEK_SET);
505 else if (buf.st_size == MCD_SIZE + 3904)
506 fseek(f, adr + 3904, SEEK_SET);
508 fseek(f, adr, SEEK_SET);
510 fseek(f, adr, SEEK_SET);
512 fwrite(data + adr, 1, size, f);
518 // try to create it again if we can't open it
519 f = fopen(mcd, "wb");
521 fwrite(data, 1, MCD_SIZE, f);
526 ConvertMcd(mcd, data);
529 void CreateMcd(char *mcd) {
535 f = fopen(mcd, "wb");
539 if (stat(mcd, &buf) != -1) {
540 if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) {
564 for (i = 0; i < 7; i++) {
578 for (i = 0; i < 14; i++) {
585 while (s-- > (MCD_SIZE + 1))
587 } else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) {
597 for (i = 0; i < 3; i++) {
610 while (s-- > (MCD_SIZE + 1))
618 while (s-- > (MCD_SIZE - 127))
623 for (i = 0; i < 15; i++) { // 15 blocks
644 for (j = 0; j < 117; j++) {
652 for (i = 0; i < 20; i++) {
673 for (j = 0; j < 118; j++) {
685 void ConvertMcd(char *mcd, char *data) {
690 if (strstr(mcd, ".gme")) {
691 f = fopen(mcd, "wb");
693 fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
696 f = fopen(mcd, "r+");
709 for (i = 0; i < 7; i++) {
722 while (s-- > (MCD_SIZE+1)) fputc(0, f);
724 } else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) {
725 f = fopen(mcd, "wb");
727 fwrite(data-64, 1, MCD_SIZE+64, f);
730 f = fopen(mcd, "r+");
744 while (s-- > (MCD_SIZE+1)) fputc(0, f);
747 f = fopen(mcd, "wb");
749 fwrite(data, 1, MCD_SIZE, f);
755 void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
756 char *data = NULL, *ptr, *str, *sstr;
757 unsigned short clut[16];
761 memset(Info, 0, sizeof(McdBlock));
763 if (mcd != 1 && mcd != 2)
766 if (McdDisable[mcd - 1])
769 if (mcd == 1) data = Mcd1Data;
770 if (mcd == 2) data = Mcd2Data;
772 ptr = data + block * 8192 + 2;
774 Info->IconCount = *ptr & 0x3;
783 for (i = 0; i < 48; i++) {
788 // Convert ASCII characters to half-width
789 if (c >= 0x8281 && c <= 0x829A)
790 c = (c - 0x8281) + 'a';
791 else if (c >= 0x824F && c <= 0x827A)
792 c = (c - 0x824F) + '0';
793 else if (c == 0x8140) c = ' ';
794 else if (c == 0x8143) c = ',';
795 else if (c == 0x8144) c = '.';
796 else if (c == 0x8146) c = ':';
797 else if (c == 0x8147) c = ';';
798 else if (c == 0x8148) c = '?';
799 else if (c == 0x8149) c = '!';
800 else if (c == 0x815E) c = '/';
801 else if (c == 0x8168) c = '"';
802 else if (c == 0x8169) c = '(';
803 else if (c == 0x816A) c = ')';
804 else if (c == 0x816D) c = '[';
805 else if (c == 0x816E) c = ']';
806 else if (c == 0x817C) c = '-';
809 sstr[x++] = *ptr++; sstr[x++] = *ptr++;
813 str[i] = sstr[x++] = c;
820 ptr = data + block * 8192 + 0x60; // icon palette data
822 for (i = 0; i < 16; i++) {
823 clut[i] = *((unsigned short *)ptr);
827 for (i = 0; i < Info->IconCount; i++) {
828 short *icon = &Info->Icon[i * 16 * 16];
830 ptr = data + block * 8192 + 128 + 128 * i; // icon data
832 for (x = 0; x < 16 * 16; x++) {
833 icon[x++] = clut[*ptr & 0xf];
834 icon[x] = clut[*ptr >> 4];
839 ptr = data + block * 128;
844 strncpy(Info->ID, ptr, 12);
846 strncpy(Info->Name, ptr, 16);
849 int sioFreeze(void *f, int Mode) {
850 gzfreeze(buf, sizeof(buf));
851 gzfreeze(&StatReg, sizeof(StatReg));
852 gzfreeze(&ModeReg, sizeof(ModeReg));
853 gzfreeze(&CtrlReg, sizeof(CtrlReg));
854 gzfreeze(&BaudReg, sizeof(BaudReg));
855 gzfreeze(&bufcount, sizeof(bufcount));
856 gzfreeze(&parp, sizeof(parp));
857 gzfreeze(&mcdst, sizeof(mcdst));
858 gzfreeze(&rdwr, sizeof(rdwr));
859 gzfreeze(&adrH, sizeof(adrH));
860 gzfreeze(&adrL, sizeof(adrL));
861 gzfreeze(&padst, sizeof(padst));