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 ***************************************************************************/
25 #include "psxcounters.h"
29 #ifdef USE_LIBRETRO_VFS
30 #include <streams/file_stream_transforms.h>
36 #define TX_EMPTY 0x0004
37 #define PARITY_ERR 0x0008
38 #define RX_OVERRUN 0x0010
39 #define FRAMING_ERR 0x0020
40 #define SYNC_DETECT 0x0040
46 #define TX_PERM 0x0001
48 #define RX_PERM 0x0004
50 #define RESET_ERR 0x0010
52 #define SIO_RESET 0x0040
54 // *** FOR WORKS ON PADS AND MEMORY CARDS *****
56 static unsigned char buf[256];
57 static unsigned char cardh1[4] = { 0xff, 0x08, 0x5a, 0x5d };
58 static unsigned char cardh2[4] = { 0xff, 0x08, 0x5a, 0x5d };
60 // Transfer Ready and the Buffer is Empty
61 // static unsigned short StatReg = 0x002b;
62 static unsigned short StatReg = TX_RDY | TX_EMPTY;
63 static unsigned short ModeReg;
64 static unsigned short CtrlReg;
65 static unsigned short BaudReg;
67 static unsigned int bufcount;
68 static unsigned int parp;
69 static unsigned int mcdst, rdwr;
70 static unsigned char adrH, adrL;
71 static unsigned int padst;
73 char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE];
76 #define SIO_INT(eCycle) { \
77 psxRegs.interrupt |= (1 << PSXINT_SIO); \
78 psxRegs.intCycle[PSXINT_SIO].cycle = eCycle; \
79 psxRegs.intCycle[PSXINT_SIO].sCycle = psxRegs.cycle; \
80 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) {
91 s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
92 printf("%d:%03d sio write8 %04x %02x\n", frame_counter,
93 (s32)(framec / (PSXCLK / 60 / 263.0f)), CtrlReg, value);
97 if ((value & 0x40) == 0x40) {
99 switch (CtrlReg & 0x2002) {
101 buf[parp] = PAD1_poll(value, &more_data);
104 buf[parp] = PAD2_poll(value, &more_data);
117 switch (CtrlReg & 0x2002) {
118 case 0x0002: buf[parp] = PAD1_poll(value, &more_data); break;
119 case 0x2002: buf[parp] = PAD2_poll(value, &more_data); break;
132 if (rdwr) { parp++; return; }
135 case 0x52: rdwr = 1; break;
136 case 0x57: rdwr = 2; break;
165 switch (CtrlReg & 0x2002) {
167 memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128);
170 memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128);
176 for (i = 2; i < 128 + 4; i++)
196 if ((rdwr == 1 && parp == 132) ||
197 (rdwr == 2 && parp == 129)) {
198 // clear "new card" flags
199 if (CtrlReg & 0x2000)
205 if (parp < 128) buf[parp + 1] = value;
212 case 0x01: // start pad
213 StatReg |= RX_RDY; // Transfer is Ready
215 switch (CtrlReg & 0x2002) {
216 case 0x0002: buf[0] = PAD1_startPoll(1); break;
217 case 0x2002: buf[0] = PAD2_startPoll(2); break;
224 case 0x81: // start memcard
225 if (CtrlReg & 0x2000)
229 memcpy(buf, cardh2, 4);
235 memcpy(buf, cardh1, 4);
254 void sioWriteStat16(unsigned short value) {
257 void sioWriteMode16(unsigned short value) {
261 void sioWriteCtrl16(unsigned short value) {
262 CtrlReg = value & ~RESET_ERR;
263 if (value & RESET_ERR) StatReg &= ~IRQ;
264 if ((CtrlReg & SIO_RESET) || !(CtrlReg & DTR)) {
265 padst = 0; mcdst = 0; parp = 0;
266 StatReg = TX_RDY | TX_EMPTY;
267 psxRegs.interrupt &= ~(1 << PSXINT_SIO);
271 void sioWriteBaud16(unsigned short value) {
275 unsigned char sioRead8() {
276 unsigned char ret = 0;
278 if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
279 // StatReg &= ~RX_OVERRUN;
281 if (parp == bufcount) {
282 StatReg &= ~RX_RDY; // Receive is not Ready now
286 switch (CtrlReg & 0x2002) {
288 memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
289 SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128);
292 memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
293 SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128);
298 if (padst == 2) padst = 0;
307 s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
308 printf("%d:%03d sio read8 %04x %02x\n", frame_counter,
309 (s32)((float)framec / (PSXCLK / 60 / 263.0f)), CtrlReg, ret);
314 unsigned short sioReadStat16() {
318 unsigned short sioReadMode16() {
322 unsigned short sioReadCtrl16() {
326 unsigned short sioReadBaud16() {
330 void sioInterrupt() {
332 PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
334 // SysPrintf("Sio Interrupt\n");
335 if (!(StatReg & IRQ)) {
337 psxHu32ref(0x1070) |= SWAPu32(0x80);
341 void LoadMcd(int mcd, char *str) {
345 if (mcd != 1 && mcd != 2)
350 cardh1[1] |= 8; // mark as new
357 McdDisable[mcd - 1] = 0;
359 // memcard1 is handled by libretro
364 if (str == NULL || strcmp(str, "none") == 0) {
365 McdDisable[mcd - 1] = 1;
371 f = fopen(str, "rb");
373 SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
375 f = fopen(str, "rb");
379 if (stat(str, &buf) != -1) {
380 if (buf.st_size == MCD_SIZE + 64)
381 fseek(f, 64, SEEK_SET);
382 else if(buf.st_size == MCD_SIZE + 3904)
383 fseek(f, 3904, SEEK_SET);
385 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
387 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
389 memset(data, 0x00, MCD_SIZE);
394 SysMessage(_("Memory card %s failed to load!\n"), str);
398 SysPrintf(_("Loading memory card %s\n"), str);
399 if (stat(str, &buf) != -1) {
400 if (buf.st_size == MCD_SIZE + 64)
401 fseek(f, 64, SEEK_SET);
402 else if(buf.st_size == MCD_SIZE + 3904)
403 fseek(f, 3904, SEEK_SET);
405 if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
407 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
409 memset(data, 0x00, MCD_SIZE);
415 void LoadMcds(char *mcd1, char *mcd2) {
420 void SaveMcd(char *mcd, char *data, uint32_t adr, int size) {
423 if (mcd == NULL || *mcd == 0 || strcmp(mcd, "none") == 0)
426 f = fopen(mcd, "r+b");
430 if (stat(mcd, &buf) != -1) {
431 if (buf.st_size == MCD_SIZE + 64)
432 fseek(f, adr + 64, SEEK_SET);
433 else if (buf.st_size == MCD_SIZE + 3904)
434 fseek(f, adr + 3904, SEEK_SET);
436 fseek(f, adr, SEEK_SET);
438 fseek(f, adr, SEEK_SET);
440 fwrite(data + adr, 1, size, f);
446 // try to create it again if we can't open it
447 f = fopen(mcd, "wb");
449 fwrite(data, 1, MCD_SIZE, f);
454 ConvertMcd(mcd, data);
457 void CreateMcd(char *mcd) {
463 f = fopen(mcd, "wb");
467 if (stat(mcd, &buf) != -1) {
468 if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) {
492 for (i = 0; i < 7; i++) {
506 for (i = 0; i < 14; i++) {
513 while (s-- > (MCD_SIZE + 1))
515 } else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) {
525 for (i = 0; i < 3; i++) {
538 while (s-- > (MCD_SIZE + 1))
546 while (s-- > (MCD_SIZE - 127))
551 for (i = 0; i < 15; i++) { // 15 blocks
572 for (j = 0; j < 117; j++) {
580 for (i = 0; i < 20; i++) {
601 for (j = 0; j < 118; j++) {
613 void ConvertMcd(char *mcd, char *data) {
618 if (strstr(mcd, ".gme")) {
619 f = fopen(mcd, "wb");
621 fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
624 f = fopen(mcd, "r+");
625 if (f == NULL) return;
638 for (i = 0; i < 7; i++) {
651 while (s-- > (MCD_SIZE+1)) fputc(0, f);
653 } else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) {
654 f = fopen(mcd, "wb");
656 fwrite(data-64, 1, MCD_SIZE+64, f);
659 f = fopen(mcd, "r+");
660 if (f == NULL) return;
674 while (s-- > (MCD_SIZE+1)) fputc(0, f);
677 f = fopen(mcd, "wb");
679 fwrite(data, 1, MCD_SIZE, f);
685 void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
686 char *data = NULL, *ptr, *str, *sstr;
687 unsigned short clut[16];
691 memset(Info, 0, sizeof(McdBlock));
693 if (mcd != 1 && mcd != 2)
696 if (McdDisable[mcd - 1])
699 if (mcd == 1) data = Mcd1Data;
700 if (mcd == 2) data = Mcd2Data;
702 ptr = data + block * 8192 + 2;
704 Info->IconCount = *ptr & 0x3;
713 for (i = 0; i < 48; i++) {
718 // Convert ASCII characters to half-width
719 if (c >= 0x8281 && c <= 0x829A)
720 c = (c - 0x8281) + 'a';
721 else if (c >= 0x824F && c <= 0x827A)
722 c = (c - 0x824F) + '0';
723 else if (c == 0x8140) c = ' ';
724 else if (c == 0x8143) c = ',';
725 else if (c == 0x8144) c = '.';
726 else if (c == 0x8146) c = ':';
727 else if (c == 0x8147) c = ';';
728 else if (c == 0x8148) c = '?';
729 else if (c == 0x8149) c = '!';
730 else if (c == 0x815E) c = '/';
731 else if (c == 0x8168) c = '"';
732 else if (c == 0x8169) c = '(';
733 else if (c == 0x816A) c = ')';
734 else if (c == 0x816D) c = '[';
735 else if (c == 0x816E) c = ']';
736 else if (c == 0x817C) c = '-';
739 sstr[x++] = *ptr++; sstr[x++] = *ptr++;
743 str[i] = sstr[x++] = c;
750 ptr = data + block * 8192 + 0x60; // icon palette data
752 for (i = 0; i < 16; i++) {
753 clut[i] = *((unsigned short *)ptr);
757 for (i = 0; i < Info->IconCount; i++) {
758 short *icon = &Info->Icon[i * 16 * 16];
760 ptr = data + block * 8192 + 128 + 128 * i; // icon data
762 for (x = 0; x < 16 * 16; x++) {
763 icon[x++] = clut[*ptr & 0xf];
764 icon[x] = clut[*ptr >> 4];
769 ptr = data + block * 128;
774 strncpy(Info->ID, ptr, 12);
776 strncpy(Info->Name, ptr, 16);
779 int sioFreeze(void *f, int Mode) {
780 gzfreeze(buf, sizeof(buf));
781 gzfreeze(&StatReg, sizeof(StatReg));
782 gzfreeze(&ModeReg, sizeof(ModeReg));
783 gzfreeze(&CtrlReg, sizeof(CtrlReg));
784 gzfreeze(&BaudReg, sizeof(BaudReg));
785 gzfreeze(&bufcount, sizeof(bufcount));
786 gzfreeze(&parp, sizeof(parp));
787 gzfreeze(&mcdst, sizeof(mcdst));
788 gzfreeze(&rdwr, sizeof(rdwr));
789 gzfreeze(&adrH, sizeof(adrH));
790 gzfreeze(&adrL, sizeof(adrL));
791 gzfreeze(&padst, sizeof(padst));