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) {
88 PAD_LOG("sio write8 %x\n", value);
91 case 1: SIO_INT(SIO_CYCLES);
92 if ((value & 0x40) == 0x40) {
95 switch (CtrlReg & 0x2002) {
97 buf[parp] = PAD1_poll(value);
100 buf[parp] = PAD2_poll(value);
104 // SysPrintf("%x: %x, %x, %x, %x\n", CtrlReg&0x2002, buf[2], buf[3], buf[4], buf[5]);
107 if (!(buf[parp] & 0x0f)) {
110 bufcount = 2 + (buf[parp] & 0x0f) * 2;
112 if (buf[parp] == 0x41) {
127 /* if (buf[1] == 0x45) {
132 if (!Config.UseNet) {
133 switch (CtrlReg & 0x2002) {
134 case 0x0002: buf[parp] = PAD1_poll(value); break;
135 case 0x2002: buf[parp] = PAD2_poll(value); break;
139 if (parp == bufcount) { padst = 0; return; }
147 if (rdwr) { parp++; return; }
150 case 0x52: rdwr = 1; break;
151 case 0x57: rdwr = 2; break;
180 switch (CtrlReg & 0x2002) {
182 memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128);
185 memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128);
191 for (i = 2; i < 128 + 4; i++)
211 if ((rdwr == 1 && parp == 132) ||
212 (rdwr == 2 && parp == 129)) {
213 // clear "new card" flags
214 if (CtrlReg & 0x2000)
220 if (parp < 128) buf[parp + 1] = value;
227 case 0x01: // start pad
228 StatReg |= RX_RDY; // Transfer is Ready
230 if (!Config.UseNet) {
231 switch (CtrlReg & 0x2002) {
232 case 0x0002: buf[0] = PAD1_startPoll(1); break;
233 case 0x2002: buf[0] = PAD2_startPoll(2); break;
236 if ((CtrlReg & 0x2002) == 0x0002) {
241 buf[1] = PAD1_poll(0x42);
242 if (!(buf[1] & 0x0f)) {
245 bufcount = (buf[1] & 0x0f) * 2;
247 buf[2] = PAD1_poll(0);
251 buf[i++] = PAD1_poll(0);
255 if (NET_sendPadData(buf, bufcount) == -1)
258 if (NET_recvPadData(buf, 1) == -1)
260 if (NET_recvPadData(buf + 128, 2) == -1)
263 memcpy(buf, buf + 128, 32);
272 case 0x81: // start memcard
273 if (CtrlReg & 0x2000)
277 memcpy(buf, cardh2, 4);
283 memcpy(buf, cardh1, 4);
302 void sioWriteStat16(unsigned short value) {
305 void sioWriteMode16(unsigned short value) {
309 void sioWriteCtrl16(unsigned short value) {
310 CtrlReg = value & ~RESET_ERR;
311 if (value & RESET_ERR) StatReg &= ~IRQ;
312 if ((CtrlReg & SIO_RESET) || !(CtrlReg & DTR)) {
313 padst = 0; mcdst = 0; parp = 0;
314 StatReg = TX_RDY | TX_EMPTY;
315 psxRegs.interrupt &= ~(1 << PSXINT_SIO);
319 void sioWriteBaud16(unsigned short value) {
323 unsigned char sioRead8() {
324 unsigned char ret = 0;
326 if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
327 // StatReg &= ~RX_OVERRUN;
329 if (parp == bufcount) {
330 StatReg &= ~RX_RDY; // Receive is not Ready now
334 switch (CtrlReg & 0x2002) {
336 memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
337 SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128);
340 memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
341 SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128);
346 if (padst == 2) padst = 0;
355 PAD_LOG("sio read8 ;ret = %x\n", ret);
360 unsigned short sioReadStat16() {
364 unsigned short sioReadMode16() {
368 unsigned short sioReadCtrl16() {
372 unsigned short sioReadBaud16() {
378 SysMessage(_("Connection closed!\n"));
381 CdromLabel[0] = '\0';
386 void sioInterrupt() {
388 PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
390 // SysPrintf("Sio Interrupt\n");
391 if (!(StatReg & IRQ)) {
393 psxHu32ref(0x1070) |= SWAPu32(0x80);
397 void LoadMcd(int mcd, char *str) {
401 if (mcd != 1 && mcd != 2)
406 cardh1[1] |= 8; // mark as new
413 McdDisable[mcd - 1] = 0;
415 // memcard1 is handled by libretro
420 if (str == NULL || strcmp(str, "none") == 0) {
421 McdDisable[mcd - 1] = 1;
427 f = fopen(str, "rb");
429 SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
431 f = fopen(str, "rb");
435 if (stat(str, &buf) != -1) {
436 if (buf.st_size == MCD_SIZE + 64)
437 fseek(f, 64, SEEK_SET);
438 else if(buf.st_size == MCD_SIZE + 3904)
439 fseek(f, 3904, SEEK_SET);
441 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
443 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
445 memset(data, 0x00, MCD_SIZE);
450 SysMessage(_("Memory card %s failed to load!\n"), str);
454 SysPrintf(_("Loading memory card %s\n"), str);
455 if (stat(str, &buf) != -1) {
456 if (buf.st_size == MCD_SIZE + 64)
457 fseek(f, 64, SEEK_SET);
458 else if(buf.st_size == MCD_SIZE + 3904)
459 fseek(f, 3904, SEEK_SET);
461 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
463 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
465 memset(data, 0x00, MCD_SIZE);
471 void LoadMcds(char *mcd1, char *mcd2) {
476 void SaveMcd(char *mcd, char *data, uint32_t adr, int size) {
479 if (mcd == NULL || *mcd == 0 || strcmp(mcd, "none") == 0)
482 f = fopen(mcd, "r+b");
486 if (stat(mcd, &buf) != -1) {
487 if (buf.st_size == MCD_SIZE + 64)
488 fseek(f, adr + 64, SEEK_SET);
489 else if (buf.st_size == MCD_SIZE + 3904)
490 fseek(f, adr + 3904, SEEK_SET);
492 fseek(f, adr, SEEK_SET);
494 fseek(f, adr, SEEK_SET);
496 fwrite(data + adr, 1, size, f);
502 // try to create it again if we can't open it
503 f = fopen(mcd, "wb");
505 fwrite(data, 1, MCD_SIZE, f);
510 ConvertMcd(mcd, data);
513 void CreateMcd(char *mcd) {
519 f = fopen(mcd, "wb");
523 if (stat(mcd, &buf) != -1) {
524 if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) {
548 for (i = 0; i < 7; i++) {
562 for (i = 0; i < 14; i++) {
569 while (s-- > (MCD_SIZE + 1))
571 } else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) {
581 for (i = 0; i < 3; i++) {
594 while (s-- > (MCD_SIZE + 1))
602 while (s-- > (MCD_SIZE - 127))
607 for (i = 0; i < 15; i++) { // 15 blocks
628 for (j = 0; j < 117; j++) {
636 for (i = 0; i < 20; i++) {
657 for (j = 0; j < 118; j++) {
669 void ConvertMcd(char *mcd, char *data) {
674 if (strstr(mcd, ".gme")) {
675 f = fopen(mcd, "wb");
677 fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
680 f = fopen(mcd, "r+");
693 for (i = 0; i < 7; i++) {
706 while (s-- > (MCD_SIZE+1)) fputc(0, f);
708 } else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) {
709 f = fopen(mcd, "wb");
711 fwrite(data-64, 1, MCD_SIZE+64, f);
714 f = fopen(mcd, "r+");
728 while (s-- > (MCD_SIZE+1)) fputc(0, f);
731 f = fopen(mcd, "wb");
733 fwrite(data, 1, MCD_SIZE, f);
739 void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
740 char *data = NULL, *ptr, *str, *sstr;
741 unsigned short clut[16];
745 memset(Info, 0, sizeof(McdBlock));
747 if (mcd != 1 && mcd != 2)
750 if (McdDisable[mcd - 1])
753 if (mcd == 1) data = Mcd1Data;
754 if (mcd == 2) data = Mcd2Data;
756 ptr = data + block * 8192 + 2;
758 Info->IconCount = *ptr & 0x3;
767 for (i = 0; i < 48; i++) {
772 // Convert ASCII characters to half-width
773 if (c >= 0x8281 && c <= 0x829A)
774 c = (c - 0x8281) + 'a';
775 else if (c >= 0x824F && c <= 0x827A)
776 c = (c - 0x824F) + '0';
777 else if (c == 0x8140) c = ' ';
778 else if (c == 0x8143) c = ',';
779 else if (c == 0x8144) c = '.';
780 else if (c == 0x8146) c = ':';
781 else if (c == 0x8147) c = ';';
782 else if (c == 0x8148) c = '?';
783 else if (c == 0x8149) c = '!';
784 else if (c == 0x815E) c = '/';
785 else if (c == 0x8168) c = '"';
786 else if (c == 0x8169) c = '(';
787 else if (c == 0x816A) c = ')';
788 else if (c == 0x816D) c = '[';
789 else if (c == 0x816E) c = ']';
790 else if (c == 0x817C) c = '-';
793 sstr[x++] = *ptr++; sstr[x++] = *ptr++;
797 str[i] = sstr[x++] = c;
804 ptr = data + block * 8192 + 0x60; // icon palette data
806 for (i = 0; i < 16; i++) {
807 clut[i] = *((unsigned short *)ptr);
811 for (i = 0; i < Info->IconCount; i++) {
812 short *icon = &Info->Icon[i * 16 * 16];
814 ptr = data + block * 8192 + 128 + 128 * i; // icon data
816 for (x = 0; x < 16 * 16; x++) {
817 icon[x++] = clut[*ptr & 0xf];
818 icon[x] = clut[*ptr >> 4];
823 ptr = data + block * 128;
828 strncpy(Info->ID, ptr, 12);
830 strncpy(Info->Name, ptr, 16);
833 int sioFreeze(void *f, int Mode) {
834 gzfreeze(buf, sizeof(buf));
835 gzfreeze(&StatReg, sizeof(StatReg));
836 gzfreeze(&ModeReg, sizeof(ModeReg));
837 gzfreeze(&CtrlReg, sizeof(CtrlReg));
838 gzfreeze(&BaudReg, sizeof(BaudReg));
839 gzfreeze(&bufcount, sizeof(bufcount));
840 gzfreeze(&parp, sizeof(parp));
841 gzfreeze(&mcdst, sizeof(mcdst));
842 gzfreeze(&rdwr, sizeof(rdwr));
843 gzfreeze(&adrH, sizeof(adrH));
844 gzfreeze(&adrL, sizeof(adrL));
845 gzfreeze(&padst, sizeof(padst));