[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>

// 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) { \
	if (!Config.Sio) { \
		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) {
#ifdef PAD_LOG
	PAD_LOG("sio write8 %x\n", value);
#endif
	switch (padst) {
		case 1: SIO_INT(SIO_CYCLES);
			if ((value & 0x40) == 0x40) {
				padst = 2; parp = 1;
				if (!Config.UseNet) {
					switch (CtrlReg & 0x2002) {
						case 0x0002:
							buf[parp] = PAD1_poll(value);
							break;
						case 0x2002:
							buf[parp] = PAD2_poll(value);
							break;
					}
				}/* else {
//					SysPrintf("%x: %x, %x, %x, %x\n", CtrlReg&0x2002, buf[2], buf[3], buf[4], buf[5]);
				}*/

				if (!(buf[parp] & 0x0f)) {
					bufcount = 2 + 32;
				} else {
					bufcount = 2 + (buf[parp] & 0x0f) * 2;
				}
				if (buf[parp] == 0x41) {
					switch (value) {
						case 0x43:
							buf[1] = 0x43;
							break;
						case 0x45:
							buf[1] = 0xf3;
							break;
					}
				}
			}
			else padst = 0;
			return;
		case 2:
			parp++;
/*			if (buf[1] == 0x45) {
				buf[parp] = 0;
				SIO_INT(SIO_CYCLES);
				return;
			}*/
			if (!Config.UseNet) {
				switch (CtrlReg & 0x2002) {
					case 0x0002: buf[parp] = PAD1_poll(value); break;
					case 0x2002: buf[parp] = PAD2_poll(value); break;
				}
			}

			if (parp == bufcount) { padst = 0; return; }
			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

			if (!Config.UseNet) {
				switch (CtrlReg & 0x2002) {
					case 0x0002: buf[0] = PAD1_startPoll(1); break;
					case 0x2002: buf[0] = PAD2_startPoll(2); break;
				}
			} else {
				if ((CtrlReg & 0x2002) == 0x0002) {
					int i, j;

					PAD1_startPoll(1);
					buf[0] = 0;
					buf[1] = PAD1_poll(0x42);
					if (!(buf[1] & 0x0f)) {
						bufcount = 32;
					} else {
						bufcount = (buf[1] & 0x0f) * 2;
					}
					buf[2] = PAD1_poll(0);
					i = 3;
					j = bufcount;
					while (j--) {
						buf[i++] = PAD1_poll(0);
					}
					bufcount+= 3;

					if (NET_sendPadData(buf, bufcount) == -1)
						netError();

					if (NET_recvPadData(buf, 1) == -1)
						netError();
					if (NET_recvPadData(buf + 128, 2) == -1)
						netError();
				} else {
					memcpy(buf, buf + 128, 32);
				}
			}

			bufcount = 2;
			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;
			}
		}
	}

#ifdef PAD_LOG
	PAD_LOG("sio read8 ;ret = %x\n", 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;
	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);
			}
			fread(data, 1, MCD_SIZE, f);
			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);
		}
		fread(data, 1, MCD_SIZE, f);
		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+");
		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+");
		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
	27	// Status Flags
	28	#define TX_RDY 0x0001
	29	#define RX_RDY 0x0002
	30	#define TX_EMPTY 0x0004
	31	#define PARITY_ERR 0x0008
	32	#define RX_OVERRUN 0x0010
	33	#define FRAMING_ERR 0x0020
	34	#define SYNC_DETECT 0x0040
	35	#define DSR 0x0080
	36	#define CTS 0x0100
	37	#define IRQ 0x0200
	38
	39	// Control Flags
	40	#define TX_PERM 0x0001
	41	#define DTR 0x0002
	42	#define RX_PERM 0x0004
	43	#define BREAK 0x0008
	44	#define RESET_ERR 0x0010
	45	#define RTS 0x0020
	46	#define SIO_RESET 0x0040
	47
	48	// * FOR WORKS ON PADS AND MEMORY CARDS ***
	49
	50	static unsigned char buf[256];
f3a77032	51	static unsigned char cardh1[4] = { 0xff, 0x08, 0x5a, 0x5d };
f3a77032	52	static unsigned char cardh2[4] = { 0xff, 0x08, 0x5a, 0x5d };
ef79bbde P	53
	54	// Transfer Ready and the Buffer is Empty
	55	// static unsigned short StatReg = 0x002b;
	56	static unsigned short StatReg = TX_RDY \| TX_EMPTY;
	57	static unsigned short ModeReg;
	58	static unsigned short CtrlReg;
	59	static unsigned short BaudReg;
	60
	61	static unsigned int bufcount;
	62	static unsigned int parp;
	63	static unsigned int mcdst, rdwr;
	64	static unsigned char adrH, adrL;
	65	static unsigned int padst;
	66
	67	char Mcd1Data[MCD_SIZE], Mcd2Data[MCD_SIZE];
f3a77032	68	char McdDisable[2];
ef79bbde	69
d28b54b1	70	#define SIO_INT(eCycle) { \
	71	if (!Config.Sio) { \
	72	psxRegs.interrupt \|= (1 << PSXINT_SIO); \
	73	psxRegs.intCycle[PSXINT_SIO].cycle = eCycle; \
	74	psxRegs.intCycle[PSXINT_SIO].sCycle = psxRegs.cycle; \
	75	new_dyna_set_event(PSXINT_SIO, eCycle); \
	76	} \
	77	}
	78
ef79bbde P	79	// clk cycle byte
	80	// 4us * 8bits = (PSXCLK / 1000000) * 32; (linuzappz)
	81	// TODO: add SioModePrescaler and BaudReg
d28b54b1	82	#define SIO_CYCLES 535
ef79bbde P	83
	84	void sioWrite8(unsigned char value) {
	85	#ifdef PAD_LOG
	86	PAD_LOG("sio write8 %x\n", value);
	87	#endif
	88	switch (padst) {
d28b54b1	89	case 1: SIO_INT(SIO_CYCLES);
ef79bbde P	90	if ((value & 0x40) == 0x40) {
	91	padst = 2; parp = 1;
	92	if (!Config.UseNet) {
	93	switch (CtrlReg & 0x2002) {
	94	case 0x0002:
	95	buf[parp] = PAD1_poll(value);
	96	break;
	97	case 0x2002:
	98	buf[parp] = PAD2_poll(value);
	99	break;
	100	}
	101	}/* else {
	102	// SysPrintf("%x: %x, %x, %x, %x\n", CtrlReg&0x2002, buf[2], buf[3], buf[4], buf[5]);
	103	}*/
	104
	105	if (!(buf[parp] & 0x0f)) {
	106	bufcount = 2 + 32;
	107	} else {
	108	bufcount = 2 + (buf[parp] & 0x0f) * 2;
	109	}
	110	if (buf[parp] == 0x41) {
	111	switch (value) {
	112	case 0x43:
	113	buf[1] = 0x43;
	114	break;
	115	case 0x45:
	116	buf[1] = 0xf3;
	117	break;
	118	}
	119	}
	120	}
	121	else padst = 0;
	122	return;
	123	case 2:
	124	parp++;
	125	/* if (buf[1] == 0x45) {
	126	buf[parp] = 0;
d28b54b1	127	SIO_INT(SIO_CYCLES);
ef79bbde P	128	return;
	129	}*/
	130	if (!Config.UseNet) {
	131	switch (CtrlReg & 0x2002) {
	132	case 0x0002: buf[parp] = PAD1_poll(value); break;
	133	case 0x2002: buf[parp] = PAD2_poll(value); break;
	134	}
	135	}
	136
	137	if (parp == bufcount) { padst = 0; return; }
d28b54b1	138	SIO_INT(SIO_CYCLES);
ef79bbde P	139	return;
	140	}
	141
	142	switch (mcdst) {
	143	case 1:
d28b54b1	144	SIO_INT(SIO_CYCLES);
ef79bbde P	145	if (rdwr) { parp++; return; }
	146	parp = 1;
	147	switch (value) {
	148	case 0x52: rdwr = 1; break;
	149	case 0x57: rdwr = 2; break;
	150	default: mcdst = 0;
	151	}
	152	return;
	153	case 2: // address H
d28b54b1	154	SIO_INT(SIO_CYCLES);
ef79bbde P	155	adrH = value;
	156	*buf = 0;
	157	parp = 0;
	158	bufcount = 1;
	159	mcdst = 3;
	160	return;
	161	case 3: // address L
d28b54b1	162	SIO_INT(SIO_CYCLES);
ef79bbde P	163	adrL = value;
	164	*buf = adrH;
	165	parp = 0;
	166	bufcount = 1;
	167	mcdst = 4;
	168	return;
	169	case 4:
d28b54b1	170	SIO_INT(SIO_CYCLES);
ef79bbde P	171	parp = 0;
	172	switch (rdwr) {
	173	case 1: // read
	174	buf[0] = 0x5c;
	175	buf[1] = 0x5d;
	176	buf[2] = adrH;
	177	buf[3] = adrL;
	178	switch (CtrlReg & 0x2002) {
	179	case 0x0002:
	180	memcpy(&buf[4], Mcd1Data + (adrL \| (adrH << 8)) * 128, 128);
	181	break;
	182	case 0x2002:
	183	memcpy(&buf[4], Mcd2Data + (adrL \| (adrH << 8)) * 128, 128);
	184	break;
	185	}
	186	{
	187	char xor = 0;
	188	int i;
	189	for (i = 2; i < 128 + 4; i++)
	190	xor ^= buf[i];
	191	buf[132] = xor;
	192	}
	193	buf[133] = 0x47;
	194	bufcount = 133;
	195	break;
	196	case 2: // write
	197	buf[0] = adrL;
	198	buf[1] = value;
	199	buf[129] = 0x5c;
	200	buf[130] = 0x5d;
	201	buf[131] = 0x47;
	202	bufcount = 131;
	203	break;
	204	}
	205	mcdst = 5;
	206	return;
	207	case 5:
	208	parp++;
f3a77032	209	if ((rdwr == 1 && parp == 132) \|\|
	210	(rdwr == 2 && parp == 129)) {
	211	// clear "new card" flags
	212	if (CtrlReg & 0x2000)
	213	cardh2[1] &= ~8;
	214	else
	215	cardh1[1] &= ~8;
	216	}
ef79bbde P	217	if (rdwr == 2) {
	218	if (parp < 128) buf[parp + 1] = value;
	219	}
d28b54b1	220	SIO_INT(SIO_CYCLES);
ef79bbde P	221	return;
	222	}
	223
	224	switch (value) {
	225	case 0x01: // start pad
	226	StatReg \|= RX_RDY; // Transfer is Ready
	227
	228	if (!Config.UseNet) {
	229	switch (CtrlReg & 0x2002) {
	230	case 0x0002: buf[0] = PAD1_startPoll(1); break;
	231	case 0x2002: buf[0] = PAD2_startPoll(2); break;
	232	}
	233	} else {
	234	if ((CtrlReg & 0x2002) == 0x0002) {
	235	int i, j;
	236
	237	PAD1_startPoll(1);
	238	buf[0] = 0;
	239	buf[1] = PAD1_poll(0x42);
	240	if (!(buf[1] & 0x0f)) {
	241	bufcount = 32;
	242	} else {
	243	bufcount = (buf[1] & 0x0f) * 2;
	244	}
	245	buf[2] = PAD1_poll(0);
	246	i = 3;
	247	j = bufcount;
	248	while (j--) {
	249	buf[i++] = PAD1_poll(0);
	250	}
	251	bufcount+= 3;
	252
	253	if (NET_sendPadData(buf, bufcount) == -1)
	254	netError();
	255
	256	if (NET_recvPadData(buf, 1) == -1)
	257	netError();
	258	if (NET_recvPadData(buf + 128, 2) == -1)
	259	netError();
	260	} else {
	261	memcpy(buf, buf + 128, 32);
	262	}
	263	}
	264
	265	bufcount = 2;
	266	parp = 0;
	267	padst = 1;
d28b54b1	268	SIO_INT(SIO_CYCLES);
ef79bbde P	269	return;
ef79bbde P	270	case 0x81: // start memcard
f3a77032	271	if (CtrlReg & 0x2000)
	272	{
	273	if (McdDisable[1])
	274	goto no_device;
	275	memcpy(buf, cardh2, 4);
	276	}
	277	else
	278	{
	279	if (McdDisable[0])
	280	goto no_device;
	281	memcpy(buf, cardh1, 4);
	282	}
ef79bbde	283	StatReg \|= RX_RDY;
ef79bbde P	284	parp = 0;
	285	bufcount = 3;
	286	mcdst = 1;
	287	rdwr = 0;
d28b54b1	288	SIO_INT(SIO_CYCLES);
ef79bbde	289	return;
f3a77032	290	default:
	291	no_device:
	292	StatReg \|= RX_RDY;
	293	buf[0] = 0xff;
	294	parp = 0;
	295	bufcount = 0;
	296	return;
ef79bbde P	297	}
	298	}
	299
	300	void sioWriteStat16(unsigned short value) {
	301	}
	302
	303	void sioWriteMode16(unsigned short value) {
	304	ModeReg = value;
	305	}
	306
	307	void sioWriteCtrl16(unsigned short value) {
	308	CtrlReg = value & ~RESET_ERR;
	309	if (value & RESET_ERR) StatReg &= ~IRQ;
7d95d6fa	310	if ((CtrlReg & SIO_RESET) \|\| !(CtrlReg & DTR)) {
ef79bbde P	311	padst = 0; mcdst = 0; parp = 0;
ef79bbde P	312	StatReg = TX_RDY \| TX_EMPTY;
d28b54b1	313	psxRegs.interrupt &= ~(1 << PSXINT_SIO);
ef79bbde P	314	}
	315	}
	316
	317	void sioWriteBaud16(unsigned short value) {
	318	BaudReg = value;
	319	}
	320
	321	unsigned char sioRead8() {
	322	unsigned char ret = 0;
	323
	324	if ((StatReg & RX_RDY)/* && (CtrlReg & RX_PERM)*/) {
	325	// StatReg &= ~RX_OVERRUN;
	326	ret = buf[parp];
	327	if (parp == bufcount) {
	328	StatReg &= ~RX_RDY; // Receive is not Ready now
	329	if (mcdst == 5) {
	330	mcdst = 0;
	331	if (rdwr == 2) {
	332	switch (CtrlReg & 0x2002) {
	333	case 0x0002:
	334	memcpy(Mcd1Data + (adrL \| (adrH << 8)) * 128, &buf[1], 128);
	335	SaveMcd(Config.Mcd1, Mcd1Data, (adrL \| (adrH << 8)) * 128, 128);
	336	break;
	337	case 0x2002:
	338	memcpy(Mcd2Data + (adrL \| (adrH << 8)) * 128, &buf[1], 128);
	339	SaveMcd(Config.Mcd2, Mcd2Data, (adrL \| (adrH << 8)) * 128, 128);
	340	break;
	341	}
	342	}
	343	}
	344	if (padst == 2) padst = 0;
	345	if (mcdst == 1) {
	346	mcdst = 2;
	347	StatReg\|= RX_RDY;
	348	}
	349	}
	350	}
	351
	352	#ifdef PAD_LOG
	353	PAD_LOG("sio read8 ;ret = %x\n", ret);
	354	#endif
	355	return ret;
	356	}
	357
	358	unsigned short sioReadStat16() {
	359	return StatReg;
	360	}
	361
	362	unsigned short sioReadMode16() {
	363	return ModeReg;
	364	}
	365
	366	unsigned short sioReadCtrl16() {
	367	return CtrlReg;
	368	}
	369
	370	unsigned short sioReadBaud16() {
	371	return BaudReg;
	372	}
	373
	374	void netError() {
	375	ClosePlugins();
	376	SysMessage(_("Connection closed!\n"));
	377
378	CdromId[0] = '\0';
379	CdromLabel[0] = '\0';
380
381	SysRunGui();
382	}
383
384	void sioInterrupt() {
385	#ifdef PAD_LOG
386	PAD_LOG("Sio Interrupt (CP0.Status = %x)\n", psxRegs.CP0.n.Status);
387	#endif
388	// SysPrintf("Sio Interrupt\n");
aa35134a	389	if (!(StatReg & IRQ)) {
	390	StatReg \|= IRQ;
	391	psxHu32ref(0x1070) \|= SWAPu32(0x80);
	392	}
ef79bbde P	393	}
	394
	395	void LoadMcd(int mcd, char *str) {
	396	FILE *f;
	397	char *data = NULL;
	398
f3a77032	399	if (mcd != 1 && mcd != 2)
f3a77032	400	return;
ef79bbde	401
f3a77032	402	if (mcd == 1) {
	403	data = Mcd1Data;
	404	cardh1[1] \|= 8; // mark as new
	405	}
	406	if (mcd == 2) {
	407	data = Mcd2Data;
	408	cardh2[1] \|= 8;
	409	}
	410
	411	McdDisable[mcd - 1] = 0;
6f18d16a	412	if (str == NULL \|\| strcmp(str, "none") == 0) {
f3a77032	413	McdDisable[mcd - 1] = 1;
f3a77032	414	return;
ef79bbde	415	}
6f18d16a	416	if (*str == 0)
	417	return;
	418
ef79bbde P	419	f = fopen(str, "rb");
	420	if (f == NULL) {
	421	SysPrintf(_("The memory card %s doesn't exist - creating it\n"), str);
	422	CreateMcd(str);
	423	f = fopen(str, "rb");
	424	if (f != NULL) {
	425	struct stat buf;
	426
	427	if (stat(str, &buf) != -1) {
	428	if (buf.st_size == MCD_SIZE + 64)
	429	fseek(f, 64, SEEK_SET);
	430	else if(buf.st_size == MCD_SIZE + 3904)
	431	fseek(f, 3904, SEEK_SET);
	432	}
	433	fread(data, 1, MCD_SIZE, f);
	434	fclose(f);
	435	}
	436	else
	437	SysMessage(_("Memory card %s failed to load!\n"), str);
	438	}
	439	else {
	440	struct stat buf;
	441	SysPrintf(_("Loading memory card %s\n"), str);
	442	if (stat(str, &buf) != -1) {
	443	if (buf.st_size == MCD_SIZE + 64)
	444	fseek(f, 64, SEEK_SET);
	445	else if(buf.st_size == MCD_SIZE + 3904)
	446	fseek(f, 3904, SEEK_SET);
	447	}
	448	fread(data, 1, MCD_SIZE, f);
	449	fclose(f);
	450	}
	451	}
	452
	453	void LoadMcds(char mcd1, char mcd2) {
	454	LoadMcd(1, mcd1);
	455	LoadMcd(2, mcd2);
	456	}
	457
	458	void SaveMcd(char mcd, char data, uint32_t adr, int size) {
	459	FILE *f;
	460
6f18d16a	461	if (mcd == NULL \|\| *mcd == 0 \|\| strcmp(mcd, "none") == 0)
	462	return;
	463
ef79bbde P	464	f = fopen(mcd, "r+b");
	465	if (f != NULL) {
	466	struct stat buf;
	467
	468	if (stat(mcd, &buf) != -1) {
	469	if (buf.st_size == MCD_SIZE + 64)
	470	fseek(f, adr + 64, SEEK_SET);
	471	else if (buf.st_size == MCD_SIZE + 3904)
	472	fseek(f, adr + 3904, SEEK_SET);
	473	else
	474	fseek(f, adr, SEEK_SET);
	475	} else
	476	fseek(f, adr, SEEK_SET);
	477
	478	fwrite(data + adr, 1, size, f);
	479	fclose(f);
	480	return;
	481	}
	482
	483	#if 0
	484	// try to create it again if we can't open it
	485	f = fopen(mcd, "wb");
	486	if (f != NULL) {
	487	fwrite(data, 1, MCD_SIZE, f);
	488	fclose(f);
	489	}
	490	#endif
	491
	492	ConvertMcd(mcd, data);
	493	}
	494
	495	void CreateMcd(char *mcd) {
	496	FILE *f;
	497	struct stat buf;
	498	int s = MCD_SIZE;
	499	int i = 0, j;
	500
	501	f = fopen(mcd, "wb");
	502	if (f == NULL)
	503	return;
	504
	505	if (stat(mcd, &buf) != -1) {
	506	if ((buf.st_size == MCD_SIZE + 3904) \|\| strstr(mcd, ".gme")) {
	507	s = s + 3904;
	508	fputc('1', f);
	509	s--;
	510	fputc('2', f);
	511	s--;
	512	fputc('3', f);
	513	s--;
	514	fputc('-', f);
	515	s--;
	516	fputc('4', f);
	517	s--;
	518	fputc('5', f);
	519	s--;
	520	fputc('6', f);
	521	s--;
	522	fputc('-', f);
	523	s--;
	524	fputc('S', f);
	525	s--;
	526	fputc('T', f);
	527	s--;
528	fputc('D', f);
529	s--;
530	for (i = 0; i < 7; i++) {
531	fputc(0, f);
532	s--;
533	}
534	fputc(1, f);
535	s--;
536	fputc(0, f);
537	s--;
538	fputc(1, f);
539	s--;
540	fputc('M', f);
541	s--;
542	fputc('Q', f);
543	s--;
544	for (i = 0; i < 14; i++) {
545	fputc(0xa0, f);
546	s--;
547	}
548	fputc(0, f);
549	s--;
550	fputc(0xff, f);
551	while (s-- > (MCD_SIZE + 1))
552	fputc(0, f);
553	} else if ((buf.st_size == MCD_SIZE + 64) \|\| strstr(mcd, ".mem") \|\| strstr(mcd, ".vgs")) {
554	s = s + 64;
555	fputc('V', f);
556	s--;
557	fputc('g', f);
558	s--;
559	fputc('s', f);
560	s--;
561	fputc('M', f);
562	s--;
563	for (i = 0; i < 3; i++) {
564	fputc(1, f);
565	s--;
566	fputc(0, f);
567	s--;
568	fputc(0, f);
569	s--;
570	fputc(0, f);
571	s--;
572	}
573	fputc(0, f);
574	s--;
575	fputc(2, f);
576	while (s-- > (MCD_SIZE + 1))
577	fputc(0, f);
578	}
579	}
580	fputc('M', f);
581	s--;
582	fputc('C', f);
583	s--;
584	while (s-- > (MCD_SIZE - 127))
585	fputc(0, f);
586	fputc(0xe, f);
587	s--;
588
589	for (i = 0; i < 15; i++) { // 15 blocks
590	fputc(0xa0, f);
591	s--;
592	fputc(0x00, f);
593	s--;
594	fputc(0x00, f);
595	s--;
596	fputc(0x00, f);
597	s--;
598	fputc(0x00, f);
599	s--;
600	fputc(0x00, f);
601	s--;
602	fputc(0x00, f);
603	s--;
604	fputc(0x00, f);
605	s--;
606	fputc(0xff, f);
607	s--;
608	fputc(0xff, f);
609	s--;
610	for (j = 0; j < 117; j++) {
611	fputc(0x00, f);
612	s--;
613	}
614	fputc(0xa0, f);
615	s--;
616	}
617
618	for (i = 0; i < 20; i++) {
619	fputc(0xff, f);
620	s--;
621	fputc(0xff, f);
622	s--;
623	fputc(0xff, f);
624	s--;
625	fputc(0xff, f);
626	s--;
627	fputc(0x00, f);
628	s--;
629	fputc(0x00, f);
630	s--;
631	fputc(0x00, f);
632	s--;
633	fputc(0x00, f);
634	s--;
635	fputc(0xff, f);
636	s--;
637	fputc(0xff, f);
638	s--;
639	for (j = 0; j < 118; j++) {
640	fputc(0x00, f);
641	s--;
642	}
643	}
644
645	while ((s--) >= 0)
646	fputc(0, f);
647
648	fclose(f);
649	}
650
651	void ConvertMcd(char mcd, char data) {
652	FILE *f;
653	int i = 0;
654	int s = MCD_SIZE;
655
656	if (strstr(mcd, ".gme")) {
657	f = fopen(mcd, "wb");
658	if (f != NULL) {
659	fwrite(data - 3904, 1, MCD_SIZE + 3904, f);
660	fclose(f);
661	}
662	f = fopen(mcd, "r+");
663	s = s + 3904;
664	fputc('1', f); s--;
665	fputc('2', f); s--;
666	fputc('3', f); s--;
667	fputc('-', f); s--;
668	fputc('4', f); s--;
669	fputc('5', f); s--;
670	fputc('6', f); s--;
671	fputc('-', f); s--;
672	fputc('S', f); s--;
673	fputc('T', f); s--;
674	fputc('D', f); s--;
675	for (i = 0; i < 7; i++) {
676	fputc(0, f); s--;
677	}
678	fputc(1, f); s--;
679	fputc(0, f); s--;
680	fputc(1, f); s--;
681	fputc('M', f); s--;
682	fputc('Q', f); s--;
683	for(i=0;i<14;i++) {
684	fputc(0xa0, f); s--;
685	}
686	fputc(0, f); s--;
687	fputc(0xff, f);
688	while (s-- > (MCD_SIZE+1)) fputc(0, f);
689	fclose(f);
690	} else if(strstr(mcd, ".mem") \|\| strstr(mcd,".vgs")) {
691	f = fopen(mcd, "wb");
692	if (f != NULL) {
693	fwrite(data-64, 1, MCD_SIZE+64, f);
694	fclose(f);
695	}
696	f = fopen(mcd, "r+");
697	s = s + 64;
698	fputc('V', f); s--;
699	fputc('g', f); s--;
700	fputc('s', f); s--;
701	fputc('M', f); s--;
702	for(i=0;i<3;i++) {
703	fputc(1, f); s--;
704	fputc(0, f); s--;
705	fputc(0, f); s--;
706	fputc(0, f); s--;
707	}
708	fputc(0, f); s--;
709	fputc(2, f);
710	while (s-- > (MCD_SIZE+1)) fputc(0, f);
711	fclose(f);
712	} else {
713	f = fopen(mcd, "wb");
714	if (f != NULL) {
715	fwrite(data, 1, MCD_SIZE, f);
716	fclose(f);
717	}
718	}
719	}
720
721	void GetMcdBlockInfo(int mcd, int block, McdBlock *Info) {
ab948f7e	722	char data = NULL, ptr, str, sstr;
ef79bbde P	723	unsigned short clut[16];
	724	unsigned short c;
	725	int i, x;
	726
	727	memset(Info, 0, sizeof(McdBlock));
	728
f3a77032	729	if (mcd != 1 && mcd != 2)
	730	return;
	731
	732	if (McdDisable[mcd - 1])
	733	return;
	734
ef79bbde P	735	if (mcd == 1) data = Mcd1Data;
	736	if (mcd == 2) data = Mcd2Data;
	737
	738	ptr = data + block * 8192 + 2;
	739
	740	Info->IconCount = *ptr & 0x3;
	741
	742	ptr += 2;
	743
	744	x = 0;
	745
	746	str = Info->Title;
	747	sstr = Info->sTitle;
	748
	749	for (i = 0; i < 48; i++) {
	750	c = *(ptr) << 8;
	751	c \|= *(ptr + 1);
	752	if (!c) break;
	753
	754	// Convert ASCII characters to half-width
	755	if (c >= 0x8281 && c <= 0x829A)
	756	c = (c - 0x8281) + 'a';
	757	else if (c >= 0x824F && c <= 0x827A)
	758	c = (c - 0x824F) + '0';
	759	else if (c == 0x8140) c = ' ';
	760	else if (c == 0x8143) c = ',';
	761	else if (c == 0x8144) c = '.';
	762	else if (c == 0x8146) c = ':';
	763	else if (c == 0x8147) c = ';';
	764	else if (c == 0x8148) c = '?';
	765	else if (c == 0x8149) c = '!';
	766	else if (c == 0x815E) c = '/';
	767	else if (c == 0x8168) c = '"';
	768	else if (c == 0x8169) c = '(';
	769	else if (c == 0x816A) c = ')';
	770	else if (c == 0x816D) c = '[';
	771	else if (c == 0x816E) c = ']';
	772	else if (c == 0x817C) c = '-';
	773	else {
	774	str[i] = ' ';
	775	sstr[x++] = ptr++; sstr[x++] = ptr++;
	776	continue;
	777	}
	778
	779	str[i] = sstr[x++] = c;
	780	ptr += 2;
	781	}
	782
	783	trim(str);
	784	trim(sstr);
	785
	786	ptr = data + block * 8192 + 0x60; // icon palette data
	787
	788	for (i = 0; i < 16; i++) {
	789	clut[i] = ((unsigned short )ptr);
	790	ptr += 2;
	791	}
	792
	793	for (i = 0; i < Info->IconCount; i++) {
	794	short icon = &Info->Icon[i 16 * 16];
	795
	796	ptr = data + block * 8192 + 128 + 128 * i; // icon data
	797
	798	for (x = 0; x < 16 * 16; x++) {
799	icon[x++] = clut[*ptr & 0xf];
800	icon[x] = clut[*ptr >> 4];
801	ptr++;
802	}
803	}
804
805	ptr = data + block * 128;
806
807	Info->Flags = *ptr;
808
809	ptr += 0xa;
810	strncpy(Info->ID, ptr, 12);
811	ptr += 12;
812	strncpy(Info->Name, ptr, 16);
813	}
814
496d88d4	815	int sioFreeze(void *f, int Mode) {
ef79bbde P	816	gzfreeze(buf, sizeof(buf));
	817	gzfreeze(&StatReg, sizeof(StatReg));
	818	gzfreeze(&ModeReg, sizeof(ModeReg));
	819	gzfreeze(&CtrlReg, sizeof(CtrlReg));
	820	gzfreeze(&BaudReg, sizeof(BaudReg));
	821	gzfreeze(&bufcount, sizeof(bufcount));
	822	gzfreeze(&parp, sizeof(parp));
	823	gzfreeze(&mcdst, sizeof(mcdst));
	824	gzfreeze(&rdwr, sizeof(rdwr));
	825	gzfreeze(&adrH, sizeof(adrH));
	826	gzfreeze(&adrL, sizeof(adrL));
	827	gzfreeze(&padst, sizeof(padst));
	828
	829	return 0;
	830	}