[pcsx_rearmed.git] / libpcsxcore / sio.c

/***************************************************************************
 *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
 ***************************************************************************/

/*
* SIO functions.
*/

#include "sio.h"
#include <sys/stat.h>

#ifdef USE_LIBRETRO_VFS
#include <streams/file_stream_transforms.h>
#endif

// Status Flags
#define TX_RDY		0x0001
#define RX_RDY		0x0002
#define TX_EMPTY	0x0004
#define PARITY_ERR	0x0008
#define RX_OVERRUN	0x0010
#define FRAMING_ERR	0x0020
#define SYNC_DETECT	0x0040
#define DSR			0x0080
#define CTS			0x0100
#define IRQ			0x0200

// Control Flags
#define TX_PERM		0x0001
#define DTR			0x0002
#define RX_PERM		0x0004
#define BREAK		0x0008
#define RESET_ERR	0x0010
#define RTS			0x0020
#define SIO_RESET	0x0040

// *** FOR WORKS ON PADS AND MEMORY CARDS *****

static unsigned char buf[256];
static unsigned char cardh1[4] = { 0xff, 0x08, 0x5a, 0x5d };
static unsigned char cardh2[4] = { 0xff, 0x08, 0x5a, 0x5d };

// Transfer Ready and the Buffer is Empty
// static unsigned short StatReg = 0x002b;
static unsigned short StatReg = TX_RDY | TX_EMPTY;
static unsigned short ModeReg;
static unsigned short CtrlReg;
static unsigned short BaudReg;

static unsigned int bufcount;
static unsigned int parp;
static unsigned int mcdst, rdwr;
static unsigned char adrH, adrL;
static unsigned int padst;

char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE];
char McdDisable[2];

#define SIO_INT(eCycle) { \
	psxRegs.interrupt |= (1 << PSXINT_SIO); \
	psxRegs.intCycle[PSXINT_SIO].cycle = eCycle; \
	psxRegs.intCycle[PSXINT_SIO].sCycle = psxRegs.cycle; \
	new_dyna_set_event(PSXINT_SIO, eCycle); \
}

// clk cycle byte
// 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz)
// TODO: add SioModePrescaler and BaudReg
#define SIO_CYCLES		535

void sioWrite8(unsigned char value) {
	int more_data = 0;
#if 0
	s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
	printf("%d:%03d sio write8 %04x %02x\n", frame_counter,
		(s32)(framec / (PSXCLK / 60 / 263.0f)), CtrlReg, value);
#endif
	switch (padst) {
		case 1:
			if ((value & 0x40) == 0x40) {
				padst = 2; parp = 1;
				switch (CtrlReg & 0x2002) {
					case 0x0002:
						buf[parp] = PAD1_poll(value, &more_data);
						break;
					case 0x2002:
						buf[parp] = PAD2_poll(value, &more_data);
						break;
				}

				if (more_data) {
					bufcount = parp + 1;
					SIO_INT(SIO_CYCLES);
				}
			}
			else padst = 0;
			return;
		case 2:
			parp++;
			switch (CtrlReg & 0x2002) {
				case 0x0002: buf[parp] = PAD1_poll(value, &more_data); break;
				case 0x2002: buf[parp] = PAD2_poll(value, &more_data); break;
			}

			if (more_data) {
				bufcount = parp + 1;
				SIO_INT(SIO_CYCLES);
			}
			return;
	}

	switch (mcdst) {
		case 1:
			SIO_INT(SIO_CYCLES);
			if (rdwr) { parp++; return; }
			parp = 1;
			switch (value) {
				case 0x52: rdwr = 1; break;
				case 0x57: rdwr = 2; break;
				default: mcdst = 0;
			}
			return;
		case 2: // address H
			SIO_INT(SIO_CYCLES);
			adrH = value;
			*buf = 0;
			parp = 0;
			bufcount = 1;
			mcdst = 3;
			return;
		case 3: // address L
			SIO_INT(SIO_CYCLES);
			adrL = value;
			*buf = adrH;
			parp = 0;
			bufcount = 1;
			mcdst = 4;
			return;
		case 4:
			SIO_INT(SIO_CYCLES);
			parp = 0;
			switch (rdwr) {
				case 1: // read
					buf[0] = 0x5c;
					buf[1] = 0x5d;
					buf[2] = adrH;
					buf[3] = adrL;
					switch (CtrlReg & 0x2002) {
						case 0x0002:
							memcpy(&buf[4], Mcd1Data + (adrL | (adrH << 8)) * 128, 128);
							break;
						case 0x2002:
							memcpy(&buf[4], Mcd2Data + (adrL | (adrH << 8)) * 128, 128);
							break;
					}
					{
					char xor = 0;
					int i;
					for (i = 2; i < 128 + 4; i++)
						xor ^= buf[i];
					buf[132] = xor;
					}
					buf[133] = 0x47;
					bufcount = 133;
					break;
				case 2: // write
					buf[0] = adrL;
					buf[1] = value;
					buf[129] = 0x5c;
					buf[130] = 0x5d;
					buf[131] = 0x47;
					bufcount = 131;
					break;
			}
			mcdst = 5;
			return;
		case 5:
			parp++;
			if ((rdwr == 1 && parp == 132) ||
			    (rdwr == 2 && parp == 129)) {
				// clear "new card" flags
				if (CtrlReg & 0x2000)
					cardh2[1] &= ~8;
				else
					cardh1[1] &= ~8;
			}
			if (rdwr == 2) {
				if (parp < 128) buf[parp + 1] = value;
			}
			SIO_INT(SIO_CYCLES);
			return;
	}

	switch (value) {
		case 0x01: // start pad
			StatReg |= RX_RDY;		// Transfer is Ready

			switch (CtrlReg & 0x2002) {
				case 0x0002: buf[0] = PAD1_startPoll(1); break;
				case 0x2002: buf[0] = PAD2_startPoll(2); break;
			}
			bufcount = 1;
			parp = 0;
			padst = 1;
			SIO_INT(SIO_CYCLES);
			return;
		case 0x81: // start memcard
			if (CtrlReg & 0x2000)
			{
				if (McdDisable[1])
					goto no_device;
				memcpy(buf, cardh2, 4);
			}
			else
			{
				if (McdDisable[0])
					goto no_device;
				memcpy(buf, cardh1, 4);
			}
			StatReg |= RX_RDY;
			parp = 0;
			bufcount = 3;
			mcdst = 1;
			rdwr = 0;
			SIO_INT(SIO_CYCLES);
			return;
		default:
		no_device:
			StatReg |= RX_RDY;
			buf[0] = 0xff;
			parp = 0;
			bufcount = 0;
			return;
	}
}

void sioWriteStat16(unsigned short value) {
}

void sioWriteMode16(unsigned short value) {
	ModeReg = value;
}

void sioWriteCtrl16(unsigned short value) {
	CtrlReg = value & ~RESET_ERR;
	if (value & RESET_ERR) StatReg &= ~IRQ;
	if ((CtrlReg & SIO_RESET) || !(CtrlReg & DTR)) {
		padst = 0; mcdst = 0; parp = 0;
		StatReg = TX_RDY | TX_EMPTY;
		psxRegs.interrupt &= ~(1 << PSXINT_SIO);
	}
}

void sioWriteBaud16(unsigned short value) {
	BaudReg = value;
}

unsigned char sioRead8() {
	unsigned char ret = 0;

	if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
//		StatReg &= ~RX_OVERRUN;
		ret = buf[parp];
		if (parp == bufcount) {
			StatReg &= ~RX_RDY;		// Receive is not Ready now
			if (mcdst == 5) {
				mcdst = 0;
				if (rdwr == 2) {
					switch (CtrlReg & 0x2002) {
						case 0x0002:
							memcpy(Mcd1Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
							SaveMcd(Config.Mcd1, Mcd1Data, (adrL | (adrH << 8)) * 128, 128);
							break;
						case 0x2002:
							memcpy(Mcd2Data + (adrL | (adrH << 8)) * 128, &buf[1], 128);
							SaveMcd(Config.Mcd2, Mcd2Data, (adrL | (adrH << 8)) * 128, 128);
							break;
					}
				}
			}
			if (padst == 2) padst = 0;
			if (mcdst == 1) {
				mcdst = 2;
				StatReg|= RX_RDY;
			}
		}
	}

#if 0
	s32 framec = psxRegs.cycle - rcnts[3].cycleStart;
	printf("%d:%03d sio read8  %04x %02x\n", frame_counter,
		(s32)((float)framec / (PSXCLK / 60 / 263.0f)), CtrlReg, ret);
#endif
	return ret;
}

unsigned short sioReadStat16() {
	return StatReg;
}

unsigned short sioReadMode16() {
	return ModeReg;
}

unsigned short sioReadCtrl16() {
	return CtrlReg;
}

unsigned short sioReadBaud16() {
	return BaudReg;
}

void netError() {
	ClosePlugins();
	SysMessage(_("Connection closed!\n"));

	CdromId[0] = '\0';
	CdromLabel[0] = '\0';

	SysRunGui();
}

void sioInterrupt() {
#ifdef PAD_LOG
	PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
#endif
//	SysPrintf("Sio Interrupt\n");
	if (!(StatReg & IRQ)) {
		StatReg |= IRQ;
		psxHu32ref(0x1070) |= SWAPu32(0x80);
	}
}

void LoadMcd(int mcd, char *str) {
	FILE *f;
	char *data = NULL;

	if (mcd != 1 && mcd != 2)
		return;

	if (mcd == 1) {
		data = Mcd1Data;
		cardh1[1] |= 8; // mark as new
	}
	if (mcd == 2) {
		data = Mcd2Data;
		cardh2[1] |= 8;
	}

	McdDisable[mcd - 1] = 0;
#ifdef HAVE_LIBRETRO
	// memcard1 is handled by libretro
	if (mcd == 1)
		return;
#endif

	if (str == NULL || strcmp(str, "none") == 0) {
		McdDisable[mcd - 1] = 1;
		return;
	}
	if (*str == 0)
		return;

	f = fopen(str, "rb");
	if (f == NULL) {
		SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
		CreateMcd(str);
		f = fopen(str, "rb");
		if (f != NULL) {
			struct stat buf;

			if (stat(str, &buf) != -1) {
				if (buf.st_size == MCD_SIZE + 64)
					fseek(f, 64, SEEK_SET);
				else if(buf.st_size == MCD_SIZE + 3904)
					fseek(f, 3904, SEEK_SET);
			}
			if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
#ifndef NDEBUG
				SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
#endif
				memset(data, 0x00, MCD_SIZE);
			}
			fclose(f);
		}
		else
			SysMessage(_("Memory card %s failed to load!\n"), str);
	}
	else {
		struct stat buf;
		SysPrintf(_("Loading memory card %s\n"), str);
		if (stat(str, &buf) != -1) {
			if (buf.st_size == MCD_SIZE + 64)
				fseek(f, 64, SEEK_SET);
			else if(buf.st_size == MCD_SIZE + 3904)
				fseek(f, 3904, SEEK_SET);
		}
		if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
#ifndef NDEBUG
			SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
#endif
			memset(data, 0x00, MCD_SIZE);
		}
		fclose(f);
	}
}

void LoadMcds(char *mcd1, char *mcd2) {
	LoadMcd(1, mcd1);
	LoadMcd(2, mcd2);
}

void SaveMcd(char *mcd, char *data, uint32_t adr, int size) {
	FILE *f;

	if (mcd == NULL || *mcd == 0 || strcmp(mcd, "none") == 0)
		return;

	f = fopen(mcd, "r+b");
	if (f != NULL) {
		struct stat buf;

		if (stat(mcd, &buf) != -1) {
			if (buf.st_size == MCD_SIZE + 64)
				fseek(f, adr + 64, SEEK_SET);
			else if (buf.st_size == MCD_SIZE + 3904)
				fseek(f, adr + 3904, SEEK_SET);
			else
				fseek(f, adr, SEEK_SET);
		} else
			fseek(f, adr, SEEK_SET);

		fwrite(data + adr, 1, size, f);
		fclose(f);
		return;
	}

#if 0
	// try to create it again if we can't open it
	f = fopen(mcd, "wb");
	if (f != NULL) {
		fwrite(data, 1, MCD_SIZE, f);
		fclose(f);
	}
#endif

	ConvertMcd(mcd, data);
}

void CreateMcd(char *mcd) {
	FILE *f;
	struct stat buf;
	int s = MCD_SIZE;
	int i = 0, j;

	f = fopen(mcd, "wb");
	if (f == NULL)
		return;

	if (stat(mcd, &buf) != -1) {
		if ((buf.st_size == MCD_SIZE + 3904) || strstr(mcd, ".gme")) {
			s = s + 3904;
			fputc('1', f);
			s--;
			fputc('2', f);
			s--;
			fputc('3', f);
			s--;
			fputc('-', f);
			s--;
			fputc('4', f);
			s--;
			fputc('5', f);
			s--;
			fputc('6', f);
			s--;
			fputc('-', f);
			s--;
			fputc('S', f);
			s--;
			fputc('T', f);
			s--;
			fputc('D', f);
			s--;
			for (i = 0; i < 7; i++) {
				fputc(0, f);
				s--;
			}
			fputc(1, f);
			s--;
			fputc(0, f);
			s--;
			fputc(1, f);
			s--;
			fputc('M', f);
			s--;
			fputc('Q', f);
			s--;
			for (i = 0; i < 14; i++) {
				fputc(0xa0, f);
				s--;
			}
			fputc(0, f);
			s--;
			fputc(0xff, f);
			while (s-- > (MCD_SIZE + 1))
				fputc(0, f);
		} else if ((buf.st_size == MCD_SIZE + 64) || strstr(mcd, ".mem") || strstr(mcd, ".vgs")) {
			s = s + 64;
			fputc('V', f);
			s--;
			fputc('g', f);
			s--;
			fputc('s', f);
			s--;
			fputc('M', f);
			s--;
			for (i = 0; i < 3; i++) {
				fputc(1, f);
				s--;
				fputc(0, f);
				s--;
				fputc(0, f);
				s--;
				fputc(0, f);
				s--;
			}
			fputc(0, f);
			s--;
			fputc(2, f);
			while (s-- > (MCD_SIZE + 1))
				fputc(0, f);
		}
	}
	fputc('M', f);
	s--;
	fputc('C', f);
	s--;
	while (s-- > (MCD_SIZE - 127))
		fputc(0, f);
	fputc(0xe, f);
	s--;

	for (i = 0; i < 15; i++) { // 15 blocks
		fputc(0xa0, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0xff, f);
		s--;
		fputc(0xff, f);
		s--;
		for (j = 0; j < 117; j++) {
			fputc(0x00, f);
			s--;
		}
		fputc(0xa0, f);
		s--;
	}

	for (i = 0; i < 20; i++) {
		fputc(0xff, f);
		s--;
		fputc(0xff, f);
		s--;
		fputc(0xff, f);
		s--;
		fputc(0xff, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0x00, f);
		s--;
		fputc(0xff, f);
		s--;
		fputc(0xff, f);
		s--;
		for (j = 0; j < 118; j++) {
			fputc(0x00, f);
			s--;
		}
	}

	while ((s--) >= 0)
		fputc(0, f);

	fclose(f);
}

void ConvertMcd(char *mcd, char *data) {
	FILE *f;
	int i = 0;
	int s = MCD_SIZE;

	if (strstr(mcd, ".gme")) {
		f = fopen(mcd, "wb");
		if (f != NULL) {
			fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
			fclose(f);
		}
		f = fopen(mcd, "r+");
		if (f == NULL) return;
		s = s + 3904;
		fputc('1', f); s--;
		fputc('2', f); s--;
		fputc('3', f); s--;
		fputc('-', f); s--;
		fputc('4', f); s--;
		fputc('5', f); s--;
		fputc('6', f); s--;
		fputc('-', f); s--;
		fputc('S', f); s--;
		fputc('T', f); s--;
		fputc('D', f); s--;
		for (i = 0; i < 7; i++) {
			fputc(0, f); s--;
		}
		fputc(1, f); s--;
		fputc(0, f); s--;
		fputc(1, f); s--;
		fputc('M', f); s--;
		fputc('Q', f); s--;
		for(i=0;i<14;i++) {
			fputc(0xa0, f); s--;
		}
		fputc(0, f); s--;
		fputc(0xff, f);
		while (s-- > (MCD_SIZE+1)) fputc(0, f);
		fclose(f);
	} else if(strstr(mcd, ".mem") || strstr(mcd,".vgs")) {
		f = fopen(mcd, "wb");
		if (f != NULL) {
			fwrite(data-64, 1, MCD_SIZE+64, f);
			fclose(f);
		}
		f = fopen(mcd, "r+");
		if (f == NULL) return;
		s = s + 64;
		fputc('V', f); s--;
		fputc('g', f); s--;
		fputc('s', f); s--;
		fputc('M', f); s--;
		for(i=0;i<3;i++) {
			fputc(1, f); s--;
			fputc(0, f); s--;
			fputc(0, f); s--;
			fputc(0, f); s--;
		}
		fputc(0, f); s--;
		fputc(2, f);
		while (s-- > (MCD_SIZE+1)) fputc(0, f);
		fclose(f);
	} else {
		f = fopen(mcd, "wb");
		if (f != NULL) {
			fwrite(data, 1, MCD_SIZE, f);
			fclose(f);
		}
	}
}

void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
	char *data = NULL, *ptr, *str, *sstr;
	unsigned short clut[16];
	unsigned short c;
	int i, x;

	memset(Info, 0, sizeof(McdBlock));

	if (mcd != 1 && mcd != 2)
		return;

	if (McdDisable[mcd - 1])
		return;

	if (mcd == 1) data = Mcd1Data;
	if (mcd == 2) data = Mcd2Data;

	ptr = data + block * 8192 + 2;

	Info->IconCount = *ptr & 0x3;

	ptr += 2;

	x = 0;

	str = Info->Title;
	sstr = Info->sTitle;

	for (i = 0; i < 48; i++) {
		c = *(ptr) << 8;
		c |= *(ptr + 1);
		if (!c) break;

		// Convert ASCII characters to half-width
		if (c >= 0x8281 && c <= 0x829A)
			c = (c - 0x8281) + 'a';
		else if (c >= 0x824F && c <= 0x827A)
			c = (c - 0x824F) + '0';
		else if (c == 0x8140) c = ' ';
		else if (c == 0x8143) c = ',';
		else if (c == 0x8144) c = '.';
		else if (c == 0x8146) c = ':';
		else if (c == 0x8147) c = ';';
		else if (c == 0x8148) c = '?';
		else if (c == 0x8149) c = '!';
		else if (c == 0x815E) c = '/';
		else if (c == 0x8168) c = '"';
		else if (c == 0x8169) c = '(';
		else if (c == 0x816A) c = ')';
		else if (c == 0x816D) c = '[';
		else if (c == 0x816E) c = ']';
		else if (c == 0x817C) c = '-';
		else {
			str[i] = ' ';
			sstr[x++] = *ptr++; sstr[x++] = *ptr++;
			continue;
		}

		str[i] = sstr[x++] = c;
		ptr += 2;
	}

	trim(str);
	trim(sstr);

	ptr = data + block * 8192 + 0x60; // icon palette data

	for (i = 0; i < 16; i++) {
		clut[i] = *((unsigned short *)ptr);
		ptr += 2;
	}

	for (i = 0; i < Info->IconCount; i++) {
		short *icon = &Info->Icon[i * 16 * 16];

		ptr = data + block * 8192 + 128 + 128 * i; // icon data

		for (x = 0; x < 16 * 16; x++) {
			icon[x++] = clut[*ptr & 0xf];
			icon[x] = clut[*ptr >> 4];
			ptr++;
		}
	}

	ptr = data + block * 128;

	Info->Flags = *ptr;

	ptr += 0xa;
	strncpy(Info->ID, ptr, 12);
	ptr += 12;
	strncpy(Info->Name, ptr, 16);
}

int sioFreeze(void *f, int Mode) {
	gzfreeze(buf, sizeof(buf));
	gzfreeze(&StatReg, sizeof(StatReg));
	gzfreeze(&ModeReg, sizeof(ModeReg));
	gzfreeze(&CtrlReg, sizeof(CtrlReg));
	gzfreeze(&BaudReg, sizeof(BaudReg));
	gzfreeze(&bufcount, sizeof(bufcount));
	gzfreeze(&parp, sizeof(parp));
	gzfreeze(&mcdst, sizeof(mcdst));
	gzfreeze(&rdwr, sizeof(rdwr));
	gzfreeze(&adrH, sizeof(adrH));
	gzfreeze(&adrL, sizeof(adrL));
	gzfreeze(&padst, sizeof(padst));

	return 0;
}
Commit	Line	Data
ef79bbde P	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
7a8d521f	27	#ifdef USE_LIBRETRO_VFS
	28	#include <streams/file_stream_transforms.h>
	29	#endif
	30
ef79bbde P	31	// Status Flags
	32	#define TX_RDY 0x0001
	33	#define RX_RDY 0x0002
	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
	39	#define DSR 0x0080
	40	#define CTS 0x0100
	41	#define IRQ 0x0200
	42
	43	// Control Flags
	44	#define TX_PERM 0x0001
	45	#define DTR 0x0002
	46	#define RX_PERM 0x0004
	47	#define BREAK 0x0008
	48	#define RESET_ERR 0x0010
	49	#define RTS 0x0020
	50	#define SIO_RESET 0x0040
	51
	52	// * FOR WORKS ON PADS AND MEMORY CARDS ***
	53
	54	static unsigned char buf[256];
f3a77032	55	static unsigned char cardh1[4] = { 0xff, 0x08, 0x5a, 0x5d };
f3a77032	56	static unsigned char cardh2[4] = { 0xff, 0x08, 0x5a, 0x5d };
ef79bbde P	57
	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;
	64
	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;
	70
	71	char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE];
f3a77032	72	char McdDisable[2];
ef79bbde	73
d28b54b1	74	#define SIO_INT(eCycle) { \
d014a471	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); \
d28b54b1	79	}
d28b54b1	80
ef79bbde P	81	// clk cycle byte
	82	// 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz)
	83	// TODO: add SioModePrescaler and BaudReg
d28b54b1	84	#define SIO_CYCLES 535
ef79bbde P	85
ef79bbde P	86	void sioWrite8(unsigned char value) {
2db412ad	87	int more_data = 0;
	88	#if 0
	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);
ef79bbde P	92	#endif
ef79bbde P	93	switch (padst) {
2db412ad	94	case 1:
ef79bbde P	95	if ((value & 0x40) == 0x40) {
ef79bbde P	96	padst = 2; parp = 1;
2db412ad	97	switch (CtrlReg & 0x2002) {
	98	case 0x0002:
	99	buf[parp] = PAD1_poll(value, &more_data);
	100	break;
	101	case 0x2002:
	102	buf[parp] = PAD2_poll(value, &more_data);
	103	break;
ef79bbde	104	}
2db412ad	105
	106	if (more_data) {
	107	bufcount = parp + 1;
	108	SIO_INT(SIO_CYCLES);
ef79bbde P	109	}
	110	}
	111	else padst = 0;
	112	return;
	113	case 2:
	114	parp++;
2db412ad	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;
ef79bbde P	118	}
ef79bbde P	119
2db412ad	120	if (more_data) {
	121	bufcount = parp + 1;
	122	SIO_INT(SIO_CYCLES);
	123	}
ef79bbde P	124	return;
	125	}
	126
	127	switch (mcdst) {
	128	case 1:
d28b54b1	129	SIO_INT(SIO_CYCLES);
ef79bbde P	130	if (rdwr) { parp++; return; }
	131	parp = 1;
	132	switch (value) {
	133	case 0x52: rdwr = 1; break;
	134	case 0x57: rdwr = 2; break;
	135	default: mcdst = 0;
	136	}
	137	return;
	138	case 2: // address H
d28b54b1	139	SIO_INT(SIO_CYCLES);
ef79bbde P	140	adrH = value;
	141	*buf = 0;
	142	parp = 0;
	143	bufcount = 1;
	144	mcdst = 3;
	145	return;
	146	case 3: // address L
d28b54b1	147	SIO_INT(SIO_CYCLES);
ef79bbde P	148	adrL = value;
	149	*buf = adrH;
	150	parp = 0;
	151	bufcount = 1;
	152	mcdst = 4;
	153	return;
	154	case 4:
d28b54b1	155	SIO_INT(SIO_CYCLES);
ef79bbde P	156	parp = 0;
	157	switch (rdwr) {
	158	case 1: // read
	159	buf[0] = 0x5c;
	160	buf[1] = 0x5d;
	161	buf[2] = adrH;
	162	buf[3] = adrL;
	163	switch (CtrlReg & 0x2002) {
	164	case 0x0002:
	165	memcpy(&buf[4], Mcd1Data + (adrL \| (adrH << 8)) * 128, 128);
	166	break;
	167	case 0x2002:
	168	memcpy(&buf[4], Mcd2Data + (adrL \| (adrH << 8)) * 128, 128);
	169	break;
	170	}
	171	{
	172	char xor = 0;
	173	int i;
	174	for (i = 2; i < 128 + 4; i++)
	175	xor ^= buf[i];
	176	buf[132] = xor;
	177	}
	178	buf[133] = 0x47;
	179	bufcount = 133;
	180	break;
	181	case 2: // write
	182	buf[0] = adrL;
	183	buf[1] = value;
	184	buf[129] = 0x5c;
	185	buf[130] = 0x5d;
	186	buf[131] = 0x47;
	187	bufcount = 131;
	188	break;
	189	}
	190	mcdst = 5;
	191	return;
	192	case 5:
	193	parp++;
f3a77032	194	if ((rdwr == 1 && parp == 132) \|\|
	195	(rdwr == 2 && parp == 129)) {
	196	// clear "new card" flags
	197	if (CtrlReg & 0x2000)
	198	cardh2[1] &= ~8;
	199	else
	200	cardh1[1] &= ~8;
	201	}
ef79bbde P	202	if (rdwr == 2) {
	203	if (parp < 128) buf[parp + 1] = value;
	204	}
d28b54b1	205	SIO_INT(SIO_CYCLES);
ef79bbde P	206	return;
	207	}
	208
	209	switch (value) {
	210	case 0x01: // start pad
	211	StatReg \|= RX_RDY; // Transfer is Ready
	212
2db412ad	213	switch (CtrlReg & 0x2002) {
	214	case 0x0002: buf[0] = PAD1_startPoll(1); break;
	215	case 0x2002: buf[0] = PAD2_startPoll(2); break;
ef79bbde	216	}
2db412ad	217	bufcount = 1;
ef79bbde P	218	parp = 0;
ef79bbde P	219	padst = 1;
d28b54b1	220	SIO_INT(SIO_CYCLES);
ef79bbde P	221	return;
ef79bbde P	222	case 0x81: // start memcard
f3a77032	223	if (CtrlReg & 0x2000)
	224	{
	225	if (McdDisable[1])
	226	goto no_device;
	227	memcpy(buf, cardh2, 4);
	228	}
	229	else
	230	{
	231	if (McdDisable[0])
	232	goto no_device;
	233	memcpy(buf, cardh1, 4);
	234	}
ef79bbde	235	StatReg \|= RX_RDY;
ef79bbde P	236	parp = 0;
	237	bufcount = 3;
	238	mcdst = 1;
	239	rdwr = 0;
d28b54b1	240	SIO_INT(SIO_CYCLES);
ef79bbde	241	return;
f3a77032	242	default:
	243	no_device:
	244	StatReg \|= RX_RDY;
	245	buf[0] = 0xff;
	246	parp = 0;
	247	bufcount = 0;
	248	return;
ef79bbde P	249	}
	250	}
	251
	252	void sioWriteStat16(unsigned short value) {
	253	}
	254
	255	void sioWriteMode16(unsigned short value) {
	256	ModeReg = value;
	257	}
	258
	259	void sioWriteCtrl16(unsigned short value) {
	260	CtrlReg = value & ~RESET_ERR;
	261	if (value & RESET_ERR) StatReg &= ~IRQ;
7d95d6fa	262	if ((CtrlReg & SIO_RESET) \|\| !(CtrlReg & DTR)) {
ef79bbde P	263	padst = 0; mcdst = 0; parp = 0;
ef79bbde P	264	StatReg = TX_RDY \| TX_EMPTY;
d28b54b1	265	psxRegs.interrupt &= ~(1 << PSXINT_SIO);
ef79bbde P	266	}
	267	}
	268
	269	void sioWriteBaud16(unsigned short value) {
	270	BaudReg = value;
	271	}
	272
	273	unsigned char sioRead8() {
	274	unsigned char ret = 0;
	275
	276	if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
	277	// StatReg &= ~RX_OVERRUN;
	278	ret = buf[parp];
	279	if (parp == bufcount) {
	280	StatReg &= ~RX_RDY; // Receive is not Ready now
	281	if (mcdst == 5) {
	282	mcdst = 0;
	283	if (rdwr == 2) {
	284	switch (CtrlReg & 0x2002) {
	285	case 0x0002:
	286	memcpy(Mcd1Data + (adrL \| (adrH << 8)) * 128, &buf[1], 128);
	287	SaveMcd(Config.Mcd1, Mcd1Data, (adrL \| (adrH << 8)) * 128, 128);
	288	break;
	289	case 0x2002:
	290	memcpy(Mcd2Data + (adrL \| (adrH << 8)) * 128, &buf[1], 128);
	291	SaveMcd(Config.Mcd2, Mcd2Data, (adrL \| (adrH << 8)) * 128, 128);
	292	break;
	293	}
	294	}
	295	}
	296	if (padst == 2) padst = 0;
	297	if (mcdst == 1) {
	298	mcdst = 2;
	299	StatReg\|= RX_RDY;
	300	}
	301	}
	302	}
	303
2db412ad	304	#if 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);
ef79bbde P	308	#endif
	309	return ret;
	310	}
	311
	312	unsigned short sioReadStat16() {
	313	return StatReg;
	314	}
	315
	316	unsigned short sioReadMode16() {
	317	return ModeReg;
	318	}
	319
	320	unsigned short sioReadCtrl16() {
	321	return CtrlReg;
	322	}
	323
	324	unsigned short sioReadBaud16() {
	325	return BaudReg;
	326	}
	327
	328	void netError() {
	329	ClosePlugins();
	330	SysMessage(_("Connection closed!\n"));
	331
	332	CdromId[0] = '\0';
	333	CdromLabel[0] = '\0';
	334
	335	SysRunGui();
	336	}
	337
	338	void sioInterrupt() {
	339	#ifdef PAD_LOG
	340	PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
	341	#endif
	342	// SysPrintf("Sio Interrupt\n");
aa35134a	343	if (!(StatReg & IRQ)) {
	344	StatReg \|= IRQ;
	345	psxHu32ref(0x1070) \|= SWAPu32(0x80);
	346	}
ef79bbde P	347	}
	348
	349	void LoadMcd(int mcd, char *str) {
	350	FILE *f;
	351	char *data = NULL;
	352
f3a77032	353	if (mcd != 1 && mcd != 2)
f3a77032	354	return;
ef79bbde	355
f3a77032	356	if (mcd == 1) {
	357	data = Mcd1Data;
	358	cardh1[1] \|= 8; // mark as new
	359	}
	360	if (mcd == 2) {
	361	data = Mcd2Data;
	362	cardh2[1] \|= 8;
	363	}
	364
	365	McdDisable[mcd - 1] = 0;
7a8d521f	366	#ifdef HAVE_LIBRETRO
	367	// memcard1 is handled by libretro
	368	if (mcd == 1)
	369	return;
	370	#endif
	371
6f18d16a	372	if (str == NULL \|\| strcmp(str, "none") == 0) {
f3a77032	373	McdDisable[mcd - 1] = 1;
f3a77032	374	return;
ef79bbde	375	}
6f18d16a	376	if (*str == 0)
	377	return;
	378
ef79bbde P	379	f = fopen(str, "rb");
	380	if (f == NULL) {
	381	SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
	382	CreateMcd(str);
	383	f = fopen(str, "rb");
	384	if (f != NULL) {
	385	struct stat buf;
	386
	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);
	392	}
7a8d521f	393	if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
	394	#ifndef NDEBUG
	395	SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
	396	#endif
	397	memset(data, 0x00, MCD_SIZE);
	398	}
ef79bbde P	399	fclose(f);
	400	}
	401	else
	402	SysMessage(_("Memory card %s failed to load!\n"), str);
	403	}
	404	else {
	405	struct stat buf;
	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);
	412	}
7a8d521f	413	if (fread(data, 1, MCD_SIZE, f) != MCD_SIZE) {
	414	#ifndef NDEBUG
	415	SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
	416	#endif
	417	memset(data, 0x00, MCD_SIZE);
	418	}
ef79bbde P	419	fclose(f);
	420	}
	421	}
	422
	423	void LoadMcds(char mcd1, char mcd2) {
	424	LoadMcd(1, mcd1);
	425	LoadMcd(2, mcd2);
	426	}
	427
	428	void SaveMcd(char mcd, char data, uint32_t adr, int size) {
	429	FILE *f;
	430
6f18d16a	431	if (mcd == NULL \|\| *mcd == 0 \|\| strcmp(mcd, "none") == 0)
	432	return;
	433
ef79bbde P	434	f = fopen(mcd, "r+b");
	435	if (f != NULL) {
	436	struct stat buf;
	437
	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);
	443	else
	444	fseek(f, adr, SEEK_SET);
	445	} else
	446	fseek(f, adr, SEEK_SET);
	447
	448	fwrite(data + adr, 1, size, f);
	449	fclose(f);
	450	return;
	451	}
	452
	453	#if 0
	454	// try to create it again if we can't open it
	455	f = fopen(mcd, "wb");
	456	if (f != NULL) {
	457	fwrite(data, 1, MCD_SIZE, f);
	458	fclose(f);
	459	}
	460	#endif
	461
	462	ConvertMcd(mcd, data);
	463	}
	464
	465	void CreateMcd(char *mcd) {
	466	FILE *f;
	467	struct stat buf;
	468	int s = MCD_SIZE;
	469	int i = 0, j;
	470
	471	f = fopen(mcd, "wb");
	472	if (f == NULL)
	473	return;
	474
	475	if (stat(mcd, &buf) != -1) {
	476	if ((buf.st_size == MCD_SIZE + 3904) \|\| strstr(mcd, ".gme")) {
	477	s = s + 3904;
	478	fputc('1', f);
	479	s--;
	480	fputc('2', f);
	481	s--;
	482	fputc('3', f);
	483	s--;
	484	fputc('-', f);
	485	s--;
	486	fputc('4', f);
	487	s--;
	488	fputc('5', f);
	489	s--;
	490	fputc('6', f);
	491	s--;
	492	fputc('-', f);
	493	s--;
	494	fputc('S', f);
	495	s--;
	496	fputc('T', f);
	497	s--;
498	fputc('D', f);
499	s--;
500	for (i = 0; i < 7; i++) {
501	fputc(0, f);
502	s--;
503	}
504	fputc(1, f);
505	s--;
506	fputc(0, f);
507	s--;
508	fputc(1, f);
509	s--;
510	fputc('M', f);
511	s--;
512	fputc('Q', f);
513	s--;
514	for (i = 0; i < 14; i++) {
515	fputc(0xa0, f);
516	s--;
517	}
518	fputc(0, f);
519	s--;
520	fputc(0xff, f);
521	while (s-- > (MCD_SIZE + 1))
522	fputc(0, f);
523	} else if ((buf.st_size == MCD_SIZE + 64) \|\| strstr(mcd, ".mem") \|\| strstr(mcd, ".vgs")) {
524	s = s + 64;
525	fputc('V', f);
526	s--;
527	fputc('g', f);
528	s--;
529	fputc('s', f);
530	s--;
531	fputc('M', f);
532	s--;
533	for (i = 0; i < 3; i++) {
534	fputc(1, f);
535	s--;
536	fputc(0, f);
537	s--;
538	fputc(0, f);
539	s--;
540	fputc(0, f);
541	s--;
542	}
543	fputc(0, f);
544	s--;
545	fputc(2, f);
546	while (s-- > (MCD_SIZE + 1))
547	fputc(0, f);
548	}
549	}
550	fputc('M', f);
551	s--;
552	fputc('C', f);
553	s--;
554	while (s-- > (MCD_SIZE - 127))
555	fputc(0, f);
556	fputc(0xe, f);
557	s--;
558
559	for (i = 0; i < 15; i++) { // 15 blocks
560	fputc(0xa0, f);
561	s--;
562	fputc(0x00, f);
563	s--;
564	fputc(0x00, f);
565	s--;
566	fputc(0x00, f);
567	s--;
568	fputc(0x00, f);
569	s--;
570	fputc(0x00, f);
571	s--;
572	fputc(0x00, f);
573	s--;
574	fputc(0x00, f);
575	s--;
576	fputc(0xff, f);
577	s--;
578	fputc(0xff, f);
579	s--;
580	for (j = 0; j < 117; j++) {
581	fputc(0x00, f);
582	s--;
583	}
584	fputc(0xa0, f);
585	s--;
586	}
587
588	for (i = 0; i < 20; i++) {
589	fputc(0xff, f);
590	s--;
591	fputc(0xff, f);
592	s--;
593	fputc(0xff, f);
594	s--;
595	fputc(0xff, f);
596	s--;
597	fputc(0x00, f);
598	s--;
599	fputc(0x00, f);
600	s--;
601	fputc(0x00, f);
602	s--;
603	fputc(0x00, f);
604	s--;
605	fputc(0xff, f);
606	s--;
607	fputc(0xff, f);
608	s--;
609	for (j = 0; j < 118; j++) {
610	fputc(0x00, f);
611	s--;
612	}
613	}
614
615	while ((s--) >= 0)
616	fputc(0, f);
617
618	fclose(f);
619	}
620
621	void ConvertMcd(char mcd, char data) {
622	FILE *f;
623	int i = 0;
624	int s = MCD_SIZE;
625
626	if (strstr(mcd, ".gme")) {
627	f = fopen(mcd, "wb");
628	if (f != NULL) {
629	fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
630	fclose(f);
631	}
632	f = fopen(mcd, "r+");
cfa5a2af	633	if (f == NULL) return;
ef79bbde P	634	s = s + 3904;
	635	fputc('1', f); s--;
	636	fputc('2', f); s--;
	637	fputc('3', f); s--;
	638	fputc('-', f); s--;
	639	fputc('4', f); s--;
	640	fputc('5', f); s--;
	641	fputc('6', f); s--;
	642	fputc('-', f); s--;
	643	fputc('S', f); s--;
	644	fputc('T', f); s--;
	645	fputc('D', f); s--;
	646	for (i = 0; i < 7; i++) {
	647	fputc(0, f); s--;
	648	}
	649	fputc(1, f); s--;
	650	fputc(0, f); s--;
	651	fputc(1, f); s--;
	652	fputc('M', f); s--;
	653	fputc('Q', f); s--;
	654	for(i=0;i<14;i++) {
	655	fputc(0xa0, f); s--;
	656	}
	657	fputc(0, f); s--;
	658	fputc(0xff, f);
	659	while (s-- > (MCD_SIZE+1)) fputc(0, f);
	660	fclose(f);
	661	} else if(strstr(mcd, ".mem") \|\| strstr(mcd,".vgs")) {
	662	f = fopen(mcd, "wb");
	663	if (f != NULL) {
	664	fwrite(data-64, 1, MCD_SIZE+64, f);
	665	fclose(f);
	666	}
	667	f = fopen(mcd, "r+");
cfa5a2af	668	if (f == NULL) return;
ef79bbde P	669	s = s + 64;
	670	fputc('V', f); s--;
	671	fputc('g', f); s--;
	672	fputc('s', f); s--;
	673	fputc('M', f); s--;
	674	for(i=0;i<3;i++) {
	675	fputc(1, f); s--;
	676	fputc(0, f); s--;
	677	fputc(0, f); s--;
	678	fputc(0, f); s--;
	679	}
	680	fputc(0, f); s--;
	681	fputc(2, f);
	682	while (s-- > (MCD_SIZE+1)) fputc(0, f);
	683	fclose(f);
	684	} else {
	685	f = fopen(mcd, "wb");
	686	if (f != NULL) {
	687	fwrite(data, 1, MCD_SIZE, f);
	688	fclose(f);
	689	}
	690	}
	691	}
	692
	693	void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
ab948f7e	694	char data = NULL, ptr, str, sstr;
ef79bbde P	695	unsigned short clut[16];
	696	unsigned short c;
	697	int i, x;
	698
	699	memset(Info, 0, sizeof(McdBlock));
	700
f3a77032	701	if (mcd != 1 && mcd != 2)
	702	return;
	703
	704	if (McdDisable[mcd - 1])
	705	return;
	706
ef79bbde P	707	if (mcd == 1) data = Mcd1Data;
	708	if (mcd == 2) data = Mcd2Data;
	709
	710	ptr = data + block * 8192 + 2;
	711
	712	Info->IconCount = *ptr & 0x3;
	713
	714	ptr += 2;
	715
	716	x = 0;
	717
	718	str = Info->Title;
	719	sstr = Info->sTitle;
	720
	721	for (i = 0; i < 48; i++) {
	722	c = *(ptr) << 8;
	723	c \|= *(ptr + 1);
	724	if (!c) break;
	725
	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 = '-';
	745	else {
	746	str[i] = ' ';
	747	sstr[x++] = ptr++; sstr[x++] = ptr++;
	748	continue;
	749	}
	750
	751	str[i] = sstr[x++] = c;
	752	ptr += 2;
	753	}
	754
	755	trim(str);
	756	trim(sstr);
	757
	758	ptr = data + block * 8192 + 0x60; // icon palette data
	759
	760	for (i = 0; i < 16; i++) {
	761	clut[i] = ((unsigned short )ptr);
	762	ptr += 2;
	763	}
	764
	765	for (i = 0; i < Info->IconCount; i++) {
	766	short icon = &Info->Icon[i 16 * 16];
	767
	768	ptr = data + block * 8192 + 128 + 128 * i; // icon data
	769
	770	for (x = 0; x < 16 * 16; x++) {
771	icon[x++] = clut[*ptr & 0xf];
772	icon[x] = clut[*ptr >> 4];
773	ptr++;
774	}
775	}
776
777	ptr = data + block * 128;
778
779	Info->Flags = *ptr;
780
781	ptr += 0xa;
782	strncpy(Info->ID, ptr, 12);
783	ptr += 12;
784	strncpy(Info->Name, ptr, 16);
785	}
786
496d88d4	787	int sioFreeze(void *f, int Mode) {
ef79bbde P	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));
	800
	801	return 0;
	802	}