X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=common%2Femu.c;fp=common%2Femu.c;h=0000000000000000000000000000000000000000;hb=f506842df2b0e251b56ffe0a828bb2029d423eec;hp=7d680b8b97fe09f254dd06240ff2ec841110a4f4;hpb=ca69c3e5a0ecf407c02dc85c6f3282ebb1efc5a2;p=libpicofe.git

diff --git a/common/emu.c b/common/emu.c
deleted file mode 100644
index 7d680b8..0000000
--- a/common/emu.c
+++ /dev/null
@@ -1,1636 +0,0 @@
-// (c) Copyright 2006-2009 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#ifndef NO_SYNC
-#include <unistd.h>
-#endif
-
-#include "emu.h"
-#include "menu.h"
-#include "fonts.h"
-#include "lprintf.h"
-#include "config.h"
-#include "plat.h"
-#include "input.h"
-#include "posix.h"
-
-#include <pico/pico_int.h>
-#include <pico/patch.h>
-#include <pico/cd/cue.h>
-
-
-#define STATUS_MSG_TIMEOUT 2000
-
-void *g_screen_ptr;
-
-#if !SCREEN_SIZE_FIXED
-int g_screen_width  = SCREEN_WIDTH;
-int g_screen_height = SCREEN_HEIGHT;
-#endif
-
-char *PicoConfigFile = "config.cfg";
-currentConfig_t currentConfig, defaultConfig;
-int state_slot = 0;
-int config_slot = 0, config_slot_current = 0;
-int pico_pen_x = 320/2, pico_pen_y = 240/2;
-int pico_inp_mode = 0;
-int engineState = PGS_Menu;
-
-/* tmp buff to reduce stack usage for plats with small stack */
-static char static_buff[512];
-/* TODO: len checking */
-char rom_fname_reload[512];
-char rom_fname_loaded[512];
-int rom_loaded = 0;
-int reset_timing = 0;
-static unsigned int notice_msg_time;	/* when started showing */
-static char noticeMsg[40];
-
-unsigned char *movie_data = NULL;
-static int movie_size = 0;
-
-
-/* don't use tolower() for easy old glibc binary compatibility */
-static void strlwr_(char *string)
-{
-	char *p;
-	for (p = string; *p; p++)
-		if ('A' <= *p && *p <= 'Z')
-			*p += 'a' - 'A';
-}
-
-static int try_rfn_cut(char *fname)
-{
-	FILE *tmp;
-	char *p;
-
-	p = fname + strlen(fname) - 1;
-	for (; p > fname; p--)
-		if (*p == '.') break;
-	*p = 0;
-
-	if((tmp = fopen(fname, "rb"))) {
-		fclose(tmp);
-		return 1;
-	}
-	return 0;
-}
-
-static void get_ext(const char *file, char *ext)
-{
-	const char *p;
-
-	p = file + strlen(file) - 4;
-	if (p < file) p = file;
-	strncpy(ext, p, 4);
-	ext[4] = 0;
-	strlwr_(ext);
-}
-
-static void fname_ext(char *dst, int dstlen, const char *prefix, const char *ext, const char *fname)
-{
-	int prefix_len = 0;
-	const char *p;
-
-	*dst = 0;
-	if (prefix) {
-		int len = plat_get_root_dir(dst, dstlen);
-		strcpy(dst + len, prefix);
-		prefix_len = len + strlen(prefix);
-	}
-
-	p = fname + strlen(fname) - 1;
-	for (; p >= fname && *p != PATH_SEP_C; p--)
-		;
-	p++;
-	strncpy(dst + prefix_len, p, dstlen - prefix_len - 1);
-
-	dst[dstlen - 8] = 0;
-	if (dst[strlen(dst) - 4] == '.')
-		dst[strlen(dst) - 4] = 0;
-	if (ext)
-		strcat(dst, ext);
-}
-
-static void romfname_ext(char *dst, int dstlen, const char *prefix, const char *ext)
-{
-	fname_ext(dst, dstlen, prefix, ext, rom_fname_loaded);
-}
-
-void emu_status_msg(const char *format, ...)
-{
-	va_list vl;
-	int ret;
-
-	va_start(vl, format);
-	ret = vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);
-	va_end(vl);
-
-	/* be sure old text gets overwritten */
-	for (; ret < 28; ret++)
-		noticeMsg[ret] = ' ';
-	noticeMsg[ret] = 0;
-
-	notice_msg_time = plat_get_ticks_ms();
-}
-
-static const char * const biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303" };
-static const char * const biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303"   };
-static const char * const biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };
-
-static int find_bios(int region, char **bios_file)
-{
-	int i, count;
-	const char * const *files;
-	FILE *f = NULL;
-
-	if (region == 4) { // US
-		files = biosfiles_us;
-		count = sizeof(biosfiles_us) / sizeof(char *);
-	} else if (region == 8) { // EU
-		files = biosfiles_eu;
-		count = sizeof(biosfiles_eu) / sizeof(char *);
-	} else if (region == 1 || region == 2) {
-		files = biosfiles_jp;
-		count = sizeof(biosfiles_jp) / sizeof(char *);
-	} else {
-		return 0;
-	}
-
-	for (i = 0; i < count; i++)
-	{
-		emu_make_path(static_buff, files[i], sizeof(static_buff) - 4);
-		strcat(static_buff, ".bin");
-		f = fopen(static_buff, "rb");
-		if (f) break;
-
-		static_buff[strlen(static_buff) - 4] = 0;
-		strcat(static_buff, ".zip");
-		f = fopen(static_buff, "rb");
-		if (f) break;
-	}
-
-	if (f) {
-		lprintf("using bios: %s\n", static_buff);
-		fclose(f);
-		if (bios_file)
-			*bios_file = static_buff;
-		return 1;
-	} else {
-		sprintf(static_buff, "no %s BIOS files found, read docs",
-			region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
-		me_update_msg(static_buff);
-		return 0;
-	}
-}
-
-/* check if the name begins with BIOS name */
-/*
-static int emu_isBios(const char *name)
-{
-	int i;
-	for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)
-		if (strstr(name, biosfiles_us[i]) != NULL) return 1;
-	for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)
-		if (strstr(name, biosfiles_eu[i]) != NULL) return 1;
-	for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)
-		if (strstr(name, biosfiles_jp[i]) != NULL) return 1;
-	return 0;
-}
-*/
-
-static unsigned char id_header[0x100];
-
-/* checks if fname points to valid MegaCD image */
-static int emu_cd_check(int *pregion, const char *fname_in)
-{
-	const char *fname = fname_in;
-	unsigned char buf[32];
-	pm_file *cd_f;
-	int region = 4; // 1: Japan, 4: US, 8: Europe
-	char ext[5];
-	cue_track_type type = CT_UNKNOWN;
-	cue_data_t *cue_data = NULL;
-
-	get_ext(fname_in, ext);
-	if (strcasecmp(ext, ".cue") == 0) {
-		cue_data = cue_parse(fname_in);
-		if (cue_data != NULL) {
-			fname = cue_data->tracks[1].fname;
-			type  = cue_data->tracks[1].type;
-		}
-		else
-			return -1;
-	}
-
-	cd_f = pm_open(fname);
-	if (cue_data != NULL)
-		cue_destroy(cue_data);
-
-	if (cd_f == NULL) return 0; // let the upper level handle this
-
-	if (pm_read(buf, 32, cd_f) != 32) {
-		pm_close(cd_f);
-		return -1;
-	}
-
-	if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) {
-		if (type && type != CT_ISO)
-			elprintf(EL_STATUS, ".cue has wrong type: %i", type);
-		type = CT_ISO;       // Sega CD (ISO)
-	}
-	if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) {
-		if (type && type != CT_BIN)
-			elprintf(EL_STATUS, ".cue has wrong type: %i", type);
-		type = CT_BIN;       // Sega CD (BIN)
-	}
-
-	if (type == CT_UNKNOWN) {
-		pm_close(cd_f);
-		return 0;
-	}
-
-	pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);
-	pm_read(id_header, sizeof(id_header), cd_f);
-
-	/* it seems we have a CD image here. Try to detect region now.. */
-	pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
-	pm_read(buf, 1, cd_f);
-	pm_close(cd_f);
-
-	if (buf[0] == 0x64) region = 8; // EU
-	if (buf[0] == 0xa1) region = 1; // JAP
-
-	lprintf("detected %s Sega/Mega CD image with %s region\n",
-		type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
-
-	if (pregion != NULL) *pregion = region;
-
-	return type;
-}
-
-static int detect_media(const char *fname)
-{
-	static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };
-	static const char *sms_exts[] = { "sms", "gg", "sg" };
-	static const char *md_exts[] = { "gen", "bin", "smd" };
-	char buff0[32], buff[32];
-	unsigned short *d16;
-	pm_file *pmf;
-	char ext[5];
-	int i;
-
-	get_ext(fname, ext);
-
-	// detect wrong extensions
-	if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) // s.gz ~ .mds.gz
-		return PM_BAD;
-
-	/* don't believe in extensions, except .cue */
-	if (strcasecmp(ext, ".cue") == 0)
-		return PM_CD;
-
-	pmf = pm_open(fname);
-	if (pmf == NULL)
-		return PM_BAD;
-
-	if (pm_read(buff0, 32, pmf) != 32) {
-		pm_close(pmf);
-		return PM_BAD;
-	}
-
-	if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||
-	    strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {
-		pm_close(pmf);
-		return PM_CD;
-	}
-
-	/* check for SMD evil */
-	if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {
-		if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&
-		    pm_read(buff, 16, pmf) == 16 &&
-		    strncmp("TMR SEGA", buff, 8) == 0)
-			goto looks_like_sms;
-
-		/* could parse further but don't bother */
-		goto extension_check;
-	}
-
-	/* MD header? Act as TMSS BIOS here */
-	if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {
-		if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)
-			goto looks_like_md;
-	}
-
-	for (i = 0; i < array_size(sms_offsets); i++) {
-		if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])
-			continue;
-
-		if (pm_read(buff, 16, pmf) != 16)
-			continue;
-
-		if (strncmp("TMR SEGA", buff, 8) == 0)
-			goto looks_like_sms;
-	}
-
-extension_check:
-	/* probably some headerless thing. Maybe check the extension after all. */
-	for (i = 0; i < array_size(md_exts); i++)
-		if (strcasecmp(pmf->ext, md_exts[i]) == 0)
-			goto looks_like_md;
-
-	for (i = 0; i < array_size(sms_exts); i++)
-		if (strcasecmp(pmf->ext, sms_exts[i]) == 0)
-			goto looks_like_sms;
-
-	/* If everything else fails, make a guess on the reset vector */
-	d16 = (unsigned short *)(buff0 + 4);
-	if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {
-		lprintf("bad MD reset vector, assuming SMS\n");
-		goto looks_like_sms;
-	}
-
-looks_like_md:
-	pm_close(pmf);
-	return PM_MD_CART;
-
-looks_like_sms:
-	pm_close(pmf);
-	return PM_MARK3;
-}
-
-static int extract_text(char *dest, const unsigned char *src, int len, int swab)
-{
-	char *p = dest;
-	int i;
-
-	if (swab) swab = 1;
-
-	for (i = len - 1; i >= 0; i--)
-	{
-		if (src[i^swab] != ' ') break;
-	}
-	len = i + 1;
-
-	for (i = 0; i < len; i++)
-	{
-		unsigned char s = src[i^swab];
-		if (s >= 0x20 && s < 0x7f && s != '#' && s != '|' &&
-			s != '[' && s != ']' && s != '\\')
-		{
-			*p++ = s;
-		}
-		else
-		{
-			sprintf(p, "\\%02x", s);
-			p += 3;
-		}
-	}
-
-	return p - dest;
-}
-
-static char *emu_make_rom_id(const char *fname)
-{
-	static char id_string[3+0xe*3+0x3*3+0x30*3+3];
-	int pos, swab = 1;
-
-	if (PicoAHW & PAHW_MCD) {
-		strcpy(id_string, "CD|");
-		swab = 0;
-	}
-	else if (PicoAHW & PAHW_SMS)
-		strcpy(id_string, "MS|");
-	else	strcpy(id_string, "MD|");
-	pos = 3;
-
-	if (!(PicoAHW & PAHW_SMS)) {
-		pos += extract_text(id_string + pos, id_header + 0x80, 0x0e, swab); // serial
-		id_string[pos] = '|'; pos++;
-		pos += extract_text(id_string + pos, id_header + 0xf0, 0x03, swab); // region
-		id_string[pos] = '|'; pos++;
-		pos += extract_text(id_string + pos, id_header + 0x50, 0x30, swab); // overseas name
-		id_string[pos] = 0;
-		if (pos > 5)
-			return id_string;
-		pos = 3;
-	}
-
-	// can't find name in ROM, use filename
-	fname_ext(id_string + 3, sizeof(id_string) - 3, NULL, NULL, fname);
-
-	return id_string;
-}
-
-// buffer must be at least 150 byte long
-void emu_get_game_name(char *str150)
-{
-	int ret, swab = (PicoAHW & PAHW_MCD) ? 0 : 1;
-	char *s, *d;
-
-	ret = extract_text(str150, id_header + 0x50, 0x30, swab); // overseas name
-
-	for (s = d = str150 + 1; s < str150+ret; s++)
-	{
-		if (*s == 0) break;
-		if (*s != ' ' || d[-1] != ' ')
-			*d++ = *s;
-	}
-	*d = 0;
-}
-
-static void shutdown_MCD(void)
-{
-	if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
-		Stop_CD();
-	PicoAHW &= ~PAHW_MCD;
-}
-
-static void system_announce(void)
-{
-	const char *sys_name, *tv_standard, *extra = "";
-	int fps;
-
-	if (PicoAHW & PAHW_SMS) {
-		sys_name = "Master System";
-#ifdef NO_SMS
-		extra = " [no support]";
-#endif
-	} else if (PicoAHW & PAHW_PICO) {
-		sys_name = "Pico";
-	} else if (PicoAHW & PAHW_MCD) {
-		sys_name = "Mega CD";
-		if ((Pico.m.hardware & 0xc0) == 0x80)
-			sys_name = "Sega CD";
-	} else if (PicoAHW & PAHW_32X) {
-		sys_name = "32X";
-	} else {
-		sys_name = "MegaDrive";
-		if ((Pico.m.hardware & 0xc0) == 0x80)
-			sys_name = "Genesis";
-	}
-	tv_standard = Pico.m.pal ? "PAL" : "NTSC";
-	fps = Pico.m.pal ? 50 : 60;
-
-	emu_status_msg("%s %s / %dFPS%s", tv_standard, sys_name, fps, extra);
-}
-
-// note: this function might mangle rom_fname
-// XXX: portions of this code should move to pico/
-int emu_reload_rom(char *rom_fname)
-{
-	unsigned int rom_size = 0;
-	char *used_rom_name = rom_fname;
-	unsigned char *rom_data = NULL;
-	char ext[5];
-	pm_file *rom = NULL;
-	int cd_state = CIT_NOT_CD;
-	int ret, media_type, cd_region;
-	int cfg_loaded = 0, bad_rom = 0;
-
-	lprintf("emu_ReloadRom(%s)\n", rom_fname);
-
-	get_ext(rom_fname, ext);
-
-	// early cleanup
-	PicoPatchUnload();
-	if (movie_data) {
-		free(movie_data);
-		movie_data = 0;
-	}
-
-	if (!strcmp(ext, ".gmv"))
-	{
-		// check for both gmv and rom
-		int dummy;
-		FILE *movie_file = fopen(rom_fname, "rb");
-		if (!movie_file) {
-			me_update_msg("Failed to open movie.");
-			return 0;
-		}
-		fseek(movie_file, 0, SEEK_END);
-		movie_size = ftell(movie_file);
-		fseek(movie_file, 0, SEEK_SET);
-		if (movie_size < 64+3) {
-			me_update_msg("Invalid GMV file.");
-			fclose(movie_file);
-			return 0;
-		}
-		movie_data = malloc(movie_size);
-		if (movie_data == NULL) {
-			me_update_msg("low memory.");
-			fclose(movie_file);
-			return 0;
-		}
-		dummy = fread(movie_data, 1, movie_size, movie_file);
-		fclose(movie_file);
-		if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {
-			me_update_msg("Invalid GMV file.");
-			return 0;
-		}
-		dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);
-		if (!dummy) {
-			me_update_msg("Could't find a ROM for movie.");
-			return 0;
-		}
-		get_ext(rom_fname, ext);
-		lprintf("gmv loaded for %s\n", rom_fname);
-	}
-	else if (!strcmp(ext, ".pat"))
-	{
-		int dummy;
-		PicoPatchLoad(rom_fname);
-		dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);
-		if (!dummy) {
-			me_update_msg("Could't find a ROM to patch.");
-			return 0;
-		}
-		get_ext(rom_fname, ext);
-	}
-
-	media_type = detect_media(rom_fname);
-	if (media_type == PM_BAD) {
-		me_update_msg("Not a ROM/CD img selected.");
-		return 0;
-	}
-
-	shutdown_MCD();
-	PicoCartUnload();
-	rom_loaded = 0;
-
-	PicoAHW = 0;
-
-	if (media_type == PM_CD)
-	{
-		// check for MegaCD image
-		cd_state = emu_cd_check(&cd_region, rom_fname);
-		if (cd_state >= 0 && cd_state != CIT_NOT_CD)
-		{
-			// valid CD image, check for BIOS..
-
-			// we need to have config loaded at this point
-			ret = emu_read_config(rom_fname, 0);
-			if (!ret) emu_read_config(NULL, 0);
-			cfg_loaded = 1;
-
-			if (PicoRegionOverride) {
-				cd_region = PicoRegionOverride;
-				lprintf("override region to %s\n", cd_region != 4 ?
-					(cd_region == 8 ? "EU" : "JAP") : "USA");
-			}
-			if (!find_bios(cd_region, &used_rom_name))
-				return 0;
-
-			get_ext(used_rom_name, ext);
-			PicoAHW |= PAHW_MCD;
-		}
-		else {
-			me_update_msg("Invalid CD image");
-			return 0;
-		}
-	}
-	else if (media_type == PM_MARK3) {
-		lprintf("detected SMS ROM\n");
-		PicoAHW = PAHW_SMS;
-	}
-
-	rom = pm_open(used_rom_name);
-	if (rom == NULL) {
-		me_update_msg("Failed to open ROM");
-		return 0;
-	}
-
-	menu_romload_prepare(used_rom_name); // also CD load
-	used_rom_name = NULL; // uses static_buff
-
-	ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);
-	pm_close(rom);
-	if (ret != 0) {
-		if      (ret == 2) me_update_msg("Out of memory");
-		else if (ret == 3) me_update_msg("Read failed");
-		else               me_update_msg("PicoCartLoad() failed.");
-		goto fail;
-	}
-
-	// detect wrong files
-	if (strncmp((char *)rom_data, "Pico", 4) == 0)
-		bad_rom = 1;
-	else if (!(PicoAHW & PAHW_SMS)) {
-		unsigned short *d = (unsigned short *)(rom_data + 4);
-		if ((((d[0] << 16) | d[1]) & 0xffffff) >= (int)rom_size) {
-			lprintf("bad reset vector\n");
-			bad_rom = 1;
-		}
-	}
-
-	if (bad_rom) {
-		me_update_msg("Bad ROM detected.");
-		goto fail;
-	}
-
-	// load config for this ROM (do this before insert to get correct region)
-	if (!(PicoAHW & PAHW_MCD))
-		memcpy(id_header, rom_data + 0x100, sizeof(id_header));
-	if (!cfg_loaded) {
-		ret = emu_read_config(rom_fname, 0);
-		if (!ret) emu_read_config(NULL, 0);
-	}
-
-	emu_make_path(static_buff, "carthw.cfg", sizeof(static_buff));
-	if (PicoCartInsert(rom_data, rom_size, static_buff)) {
-		me_update_msg("Failed to load ROM.");
-		goto fail;
-	}
-
-	// insert CD if it was detected
-	if (cd_state != CIT_NOT_CD) {
-		ret = Insert_CD(rom_fname, cd_state);
-		if (ret != 0) {
-			PicoCartUnload();
-			rom_data = NULL; // freed by unload
-			me_update_msg("Insert_CD() failed, invalid CD image?");
-			goto fail;
-		}
-	}
-
-	menu_romload_end();
-
-	if (PicoPatches) {
-		PicoPatchPrepare();
-		PicoPatchApply();
-	}
-
-	// additional movie stuff
-	if (movie_data)
-	{
-		if (movie_data[0x14] == '6')
-		     PicoOpt |=  POPT_6BTN_PAD; // 6 button pad
-		else PicoOpt &= ~POPT_6BTN_PAD;
-		PicoOpt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing
-		if (movie_data[0xF] >= 'A') {
-			if (movie_data[0x16] & 0x80) {
-				PicoRegionOverride = 8;
-			} else {
-				PicoRegionOverride = 4;
-			}
-			PicoReset();
-			// TODO: bits 6 & 5
-		}
-		movie_data[0x18+30] = 0;
-		emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);
-	}
-	else
-	{
-		system_announce();
-		PicoOpt &= ~POPT_DIS_VDP_FIFO;
-	}
-
-	strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);
-	rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;
-	rom_loaded = 1;
-
-	// load SRAM for this ROM
-	if (currentConfig.EmuOpt & EOPT_EN_SRAM)
-		emu_save_load_game(1, 1);
-
-	return 1;
-
-fail:
-	if (rom_data)
-		free(rom_data);
-	menu_romload_end();
-	return 0;
-}
-
-int emu_swap_cd(const char *fname)
-{
-	cd_img_type cd_type;
-	int ret = -1;
-
-	cd_type = emu_cd_check(NULL, fname);
-	if (cd_type != CIT_NOT_CD)
-		ret = Insert_CD(fname, cd_type);
-	if (ret != 0) {
-		me_update_msg("Load failed, invalid CD image?");
-		return 0;
-	}
-
-	strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);
-	rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;
-	return 1;
-}
-
-// <base dir><end>
-void emu_make_path(char *buff, const char *end, int size)
-{
-	int pos, end_len;
-
-	end_len = strlen(end);
-	pos = plat_get_root_dir(buff, size);
-	strncpy(buff + pos, end, size - pos);
-	buff[size - 1] = 0;
-	if (pos + end_len > size - 1)
-		lprintf("Warning: path truncated: %s\n", buff);
-}
-
-static void make_config_cfg(char *cfg_buff_512)
-{
-	emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);
-	if (config_slot != 0)
-	{
-		char *p = strrchr(cfg_buff_512, '.');
-		if (p == NULL)
-			p = cfg_buff_512 + strlen(cfg_buff_512);
-		sprintf(p, ".%i.cfg", config_slot);
-	}
-	cfg_buff_512[511] = 0;
-}
-
-void emu_prep_defconfig(void)
-{
-	memset(&defaultConfig, 0, sizeof(defaultConfig));
-	defaultConfig.EmuOpt    = 0x9d | EOPT_RAM_TIMINGS|EOPT_EN_CD_LEDS;
-	defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
-				  POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES |
-				  POPT_EN_32X|POPT_EN_PWM;
-	defaultConfig.s_PsndRate = 44100;
-	defaultConfig.s_PicoRegion = 0; // auto
-	defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
-	defaultConfig.s_PicoCDBuffers = 0;
-	defaultConfig.confirm_save = EOPT_CONFIRM_SAVE;
-	defaultConfig.Frameskip = -1; // auto
-	defaultConfig.volume = 50;
-	defaultConfig.gamma = 100;
-	defaultConfig.scaling = 0;
-	defaultConfig.turbo_rate = 15;
-
-	// platform specific overrides
-	pemu_prep_defconfig();
-}
-
-void emu_set_defconfig(void)
-{
-	memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
-	PicoOpt = currentConfig.s_PicoOpt;
-	PsndRate = currentConfig.s_PsndRate;
-	PicoRegionOverride = currentConfig.s_PicoRegion;
-	PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
-	PicoCDBuffers = currentConfig.s_PicoCDBuffers;
-	p32x_msh2_multiplier = MSH2_MULTI_DEFAULT;
-	p32x_ssh2_multiplier = SSH2_MULTI_DEFAULT;
-}
-
-int emu_read_config(const char *rom_fname, int no_defaults)
-{
-	char cfg[512];
-	int ret;
-
-	if (!no_defaults)
-		emu_set_defconfig();
-
-	if (rom_fname == NULL)
-	{
-		// global config
-		make_config_cfg(cfg);
-		ret = config_readsect(cfg, NULL);
-	}
-	else
-	{
-		char *sect = emu_make_rom_id(rom_fname);
-
-		if (config_slot != 0)
-		     sprintf(cfg, "game.%i.cfg", config_slot);
-		else strcpy(cfg,  "game.cfg");
-
-		ret = -1;
-		if (config_havesect(cfg, sect))
-		{
-			// read user's config
-			int vol = currentConfig.volume;
-			emu_set_defconfig();
-			ret = config_readsect(cfg, sect);
-			currentConfig.volume = vol; // make vol global (bah)
-		}
-		else
-		{
-			// read global config, and apply game_def.cfg on top
-			make_config_cfg(cfg);
-			config_readsect(cfg, NULL);
-			emu_make_path(cfg, "game_def.cfg", sizeof(cfg));
-			ret = config_readsect(cfg, sect);
-		}
-
-		if (ret == 0)
-		{
-			lprintf("loaded cfg from sect \"%s\"\n", sect);
-		}
-	}
-
-	pemu_validate_config();
-
-	// some sanity checks
-#ifdef PSP
-	/* TODO: mv to plat_validate_config() */
-	if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;
-	if (currentConfig.gamma < -4 || currentConfig.gamma >  16) currentConfig.gamma = 0;
-	if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2)  currentConfig.gamma2 = 0;
-#endif
-	if (currentConfig.volume < 0 || currentConfig.volume > 99)
-		currentConfig.volume = 50;
-
-	if (ret == 0)
-		config_slot_current = config_slot;
-
-	return (ret == 0);
-}
-
-
-int emu_write_config(int is_game)
-{
-	char cfg[512], *game_sect = NULL;
-	int ret, write_lrom = 0;
-
-	if (!is_game)
-	{
-		make_config_cfg(cfg);
-		write_lrom = 1;
-	} else {
-		if (config_slot != 0)
-		     sprintf(cfg, "game.%i.cfg", config_slot);
-		else strcpy(cfg,  "game.cfg");
-		game_sect = emu_make_rom_id(rom_fname_loaded);
-		lprintf("emu_write_config: sect \"%s\"\n", game_sect);
-	}
-
-	lprintf("emu_write_config: %s ", cfg);
-	ret = config_writesect(cfg, game_sect);
-	if (write_lrom) config_writelrom(cfg);
-#ifndef NO_SYNC
-	sync();
-#endif
-	lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");
-
-	if (ret == 0) config_slot_current = config_slot;
-	return ret == 0;
-}
-
-
-/* always using built-in font */
-
-#define mk_text_out(name, type, val, topleft, step_x, step_y) \
-void name(int x, int y, const char *text)				\
-{									\
-	int i, l, len = strlen(text);					\
-	type *screen = (type *)(topleft) + x * step_x + y * step_y;	\
-									\
-	for (i = 0; i < len; i++, screen += 8 * step_x)			\
-	{								\
-		for (l = 0; l < 8; l++)					\
-		{							\
-			unsigned char fd = fontdata8x8[text[i] * 8 + l];\
-			type *s = screen + l * step_y;			\
-			if (fd&0x80) s[step_x * 0] = val;		\
-			if (fd&0x40) s[step_x * 1] = val;		\
-			if (fd&0x20) s[step_x * 2] = val;		\
-			if (fd&0x10) s[step_x * 3] = val;		\
-			if (fd&0x08) s[step_x * 4] = val;		\
-			if (fd&0x04) s[step_x * 5] = val;		\
-			if (fd&0x02) s[step_x * 6] = val;		\
-			if (fd&0x01) s[step_x * 7] = val;		\
-		}							\
-	}								\
-}
-
-mk_text_out(emu_text_out8,      unsigned char,    0xf0, g_screen_ptr, 1, g_screen_width)
-mk_text_out(emu_text_out16,     unsigned short, 0xffff, g_screen_ptr, 1, g_screen_width)
-mk_text_out(emu_text_out8_rot,  unsigned char,    0xf0,
-	(char *)g_screen_ptr  + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)
-mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,
-	(short *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)
-
-#undef mk_text_out
-
-
-void update_movie(void)
-{
-	int offs = Pico.m.frame_count*3 + 0x40;
-	if (offs+3 > movie_size) {
-		free(movie_data);
-		movie_data = 0;
-		emu_status_msg("END OF MOVIE.");
-		lprintf("END OF MOVIE.\n");
-	} else {
-		// MXYZ SACB RLDU
-		PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU
-		if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // C
-		if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // A
-		if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // B
-		PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU
-		if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // C
-		if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // A
-		if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // B
-		PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX
-		if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X
-		if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z
-		PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX
-		if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X
-		if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z
-	}
-}
-
-static int try_ropen_file(const char *fname)
-{
-	FILE *f;
-
-	f = fopen(fname, "rb");
-	if (f) {
-		fclose(f);
-		return 1;
-	}
-	return 0;
-}
-
-char *emu_get_save_fname(int load, int is_sram, int slot)
-{
-	char *saveFname = static_buff;
-	char ext[16];
-
-	if (is_sram)
-	{
-		strcpy(ext, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");
-		romfname_ext(saveFname, sizeof(static_buff),
-			(PicoAHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);
-		if (!load)
-			return saveFname;
-
-		if (try_ropen_file(saveFname))
-			return saveFname;
-
-		romfname_ext(saveFname, sizeof(static_buff), NULL, ext);
-		if (try_ropen_file(saveFname))
-			return saveFname;
-	}
-	else
-	{
-		const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";
-		const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";
-		ext[0] = 0;
-		if (slot > 0 && slot < 10)
-			sprintf(ext, ".%i", slot);
-		strcat(ext, ext_main);
-
-		if (!load) {
-			romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);
-			return saveFname;
-		}
-		else {
-			romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);
-			if (try_ropen_file(saveFname))
-				return saveFname;
-
-			romfname_ext(saveFname, sizeof(static_buff), NULL, ext);
-			if (try_ropen_file(saveFname))
-				return saveFname;
-
-			// try the other ext
-			ext[0] = 0;
-			if (slot > 0 && slot < 10)
-				sprintf(ext, ".%i", slot);
-			strcat(ext, ext_othr);
-
-			romfname_ext(saveFname, sizeof(static_buff), "mds"PATH_SEP, ext);
-			if (try_ropen_file(saveFname))
-				return saveFname;
-		}
-	}
-
-	return NULL;
-}
-
-int emu_check_save_file(int slot, int *time)
-{
-	return emu_get_save_fname(1, 0, slot) ? 1 : 0;
-}
-
-int emu_save_load_game(int load, int sram)
-{
-	int ret = 0;
-	char *saveFname;
-
-	// make save filename
-	saveFname = emu_get_save_fname(load, sram, state_slot);
-	if (saveFname == NULL) {
-		if (!sram)
-			emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");
-		return -1;
-	}
-
-	lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);
-
-	if (sram)
-	{
-		FILE *sramFile;
-		int sram_size;
-		unsigned char *sram_data;
-		int truncate = 1;
-		if (PicoAHW & PAHW_MCD)
-		{
-			if (PicoOpt & POPT_EN_MCD_RAMCART) {
-				sram_size = 0x12000;
-				sram_data = SRam.data;
-				if (sram_data)
-					memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);
-			} else {
-				sram_size = 0x2000;
-				sram_data = Pico_mcd->bram;
-				truncate  = 0; // the .brm may contain RAM cart data after normal brm
-			}
-		} else {
-			sram_size = SRam.size;
-			sram_data = SRam.data;
-		}
-		if (sram_data == NULL)
-			return 0; // SRam forcefully disabled for this game
-
-		if (load)
-		{
-			sramFile = fopen(saveFname, "rb");
-			if (!sramFile)
-				return -1;
-			ret = fread(sram_data, 1, sram_size, sramFile);
-			ret = ret > 0 ? 0 : -1;
-			fclose(sramFile);
-			if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))
-				memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);
-		} else {
-			// sram save needs some special processing
-			// see if we have anything to save
-			for (; sram_size > 0; sram_size--)
-				if (sram_data[sram_size-1]) break;
-
-			if (sram_size) {
-				sramFile = fopen(saveFname, truncate ? "wb" : "r+b");
-				if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry
-				if (!sramFile) return -1;
-				ret = fwrite(sram_data, 1, sram_size, sramFile);
-				ret = (ret != sram_size) ? -1 : 0;
-				fclose(sramFile);
-#ifndef NO_SYNC
-				sync();
-#endif
-			}
-		}
-		return ret;
-	}
-	else
-	{
-		ret = PicoState(saveFname, !load);
-		if (!ret) {
-#ifndef NO_SYNC
-			if (!load) sync();
-#endif
-			emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");
-		} else {
-			emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");
-			ret = -1;
-		}
-
-		return ret;
-	}
-}
-
-void emu_set_fastforward(int set_on)
-{
-	static void *set_PsndOut = NULL;
-	static int set_Frameskip, set_EmuOpt, is_on = 0;
-
-	if (set_on && !is_on) {
-		set_PsndOut = PsndOut;
-		set_Frameskip = currentConfig.Frameskip;
-		set_EmuOpt = currentConfig.EmuOpt;
-		PsndOut = NULL;
-		currentConfig.Frameskip = 8;
-		currentConfig.EmuOpt &= ~4;
-		currentConfig.EmuOpt |= 0x40000;
-		is_on = 1;
-		emu_status_msg("FAST FORWARD");
-	}
-	else if (!set_on && is_on) {
-		PsndOut = set_PsndOut;
-		currentConfig.Frameskip = set_Frameskip;
-		currentConfig.EmuOpt = set_EmuOpt;
-		PsndRerate(1);
-		is_on = 0;
-	}
-}
-
-static void emu_tray_open(void)
-{
-	engineState = PGS_TrayMenu;
-}
-
-static void emu_tray_close(void)
-{
-	emu_status_msg("CD tray closed.");
-}
-
-void emu_32x_startup(void)
-{
-	plat_video_toggle_renderer(0, 0); // HACK
-	system_announce();
-
-	// force mode change event
-	rendstatus_old = -1;
-}
-
-void emu_reset_game(void)
-{
-	PicoReset();
-	reset_timing = 1;
-}
-
-void run_events_pico(unsigned int events)
-{
-	int lim_x;
-
-	if (events & PEV_PICO_SWINP) {
-		pico_inp_mode++;
-		if (pico_inp_mode > 2)
-			pico_inp_mode = 0;
-		switch (pico_inp_mode) {
-			case 2: emu_status_msg("Input: Pen on Pad"); break;
-			case 1: emu_status_msg("Input: Pen on Storyware"); break;
-			case 0: emu_status_msg("Input: Joystick");
-				PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;
-				break;
-		}
-	}
-	if (events & PEV_PICO_PPREV) {
-		PicoPicohw.page--;
-		if (PicoPicohw.page < 0)
-			PicoPicohw.page = 0;
-		emu_status_msg("Page %i", PicoPicohw.page);
-	}
-	if (events & PEV_PICO_PNEXT) {
-		PicoPicohw.page++;
-		if (PicoPicohw.page > 6)
-			PicoPicohw.page = 6;
-		emu_status_msg("Page %i", PicoPicohw.page);
-	}
-
-	if (pico_inp_mode == 0)
-		return;
-
-	/* handle other input modes */
-	if (PicoPad[0] & 1) pico_pen_y--;
-	if (PicoPad[0] & 2) pico_pen_y++;
-	if (PicoPad[0] & 4) pico_pen_x--;
-	if (PicoPad[0] & 8) pico_pen_x++;
-	PicoPad[0] &= ~0x0f; // release UDLR
-
-	lim_x = (Pico.video.reg[12]&1) ? 319 : 255;
-	if (pico_pen_y < 8)
-		pico_pen_y = 8;
-	if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)
-		pico_pen_y = 224 - PICO_PEN_ADJUST_Y;
-	if (pico_pen_x < 0)
-		pico_pen_x = 0;
-	if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)
-		pico_pen_x = lim_x - PICO_PEN_ADJUST_X;
-
-	PicoPicohw.pen_pos[0] = pico_pen_x;
-	if (!(Pico.video.reg[12] & 1))
-		PicoPicohw.pen_pos[0] += pico_pen_x / 4;
-	PicoPicohw.pen_pos[0] += 0x3c;
-	PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
-}
-
-static void do_turbo(int *pad, int acts)
-{
-	static int turbo_pad = 0;
-	static unsigned char turbo_cnt[3] = { 0, 0, 0 };
-	int inc = currentConfig.turbo_rate * 2;
-
-	if (acts & 0x1000) {
-		turbo_cnt[0] += inc;
-		if (turbo_cnt[0] >= 60)
-			turbo_pad ^= 0x10, turbo_cnt[0] = 0;
-	}
-	if (acts & 0x2000) {
-		turbo_cnt[1] += inc;
-		if (turbo_cnt[1] >= 60)
-			turbo_pad ^= 0x20, turbo_cnt[1] = 0;
-	}
-	if (acts & 0x4000) {
-		turbo_cnt[2] += inc;
-		if (turbo_cnt[2] >= 60)
-			turbo_pad ^= 0x40, turbo_cnt[2] = 0;
-	}
-	*pad |= turbo_pad & (acts >> 8);
-}
-
-static void run_events_ui(unsigned int which)
-{
-	if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))
-	{
-		int do_it = 1;
-		if ( emu_check_save_file(state_slot, NULL) &&
-			(((which & PEV_STATE_LOAD) && (currentConfig.confirm_save & EOPT_CONFIRM_LOAD)) ||
-			 ((which & PEV_STATE_SAVE) && (currentConfig.confirm_save & EOPT_CONFIRM_SAVE))) )
-		{
-			const char *nm;
-			char tmp[64];
-			int keys, len;
-
-			strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE?" : "OVERWRITE SAVE?");
-			len = strlen(tmp);
-			nm = in_get_key_name(-1, -PBTN_MA3);
-			snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);
-			len = strlen(tmp);
-			nm = in_get_key_name(-1, -PBTN_MBACK);
-			snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);
-
-			plat_status_msg_busy_first(tmp);
-
-			in_set_config_int(0, IN_CFG_BLOCKING, 1);
-			while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))
-				;
-			while ( !((keys = in_menu_wait_any(NULL, 50)) & (PBTN_MA3|PBTN_MBACK)) )
-				;
-			if (keys & PBTN_MBACK)
-				do_it = 0;
-			while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))
-				;
-			in_set_config_int(0, IN_CFG_BLOCKING, 0);
-		}
-		if (do_it) {
-			plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");
-			PicoStateProgressCB = plat_status_msg_busy_next;
-			emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);
-			PicoStateProgressCB = NULL;
-		}
-	}
-	if (which & PEV_SWITCH_RND)
-	{
-		plat_video_toggle_renderer(1, 0);
-	}
-	if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))
-	{
-		if (which & PEV_SSLOT_PREV) {
-			state_slot -= 1;
-			if (state_slot < 0)
-				state_slot = 9;
-		} else {
-			state_slot += 1;
-			if (state_slot > 9)
-				state_slot = 0;
-		}
-
-		emu_status_msg("SAVE SLOT %i [%s]", state_slot,
-			emu_check_save_file(state_slot, NULL) ? "USED" : "FREE");
-	}
-	if (which & PEV_MENU)
-		engineState = PGS_Menu;
-}
-
-void emu_update_input(void)
-{
-	static int prev_events = 0;
-	int actions[IN_BINDTYPE_COUNT] = { 0, };
-	int pl_actions[2];
-	int events;
-
-	in_update(actions);
-
-	pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];
-	pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;
-
-	PicoPad[0] = pl_actions[0] & 0xfff;
-	PicoPad[1] = pl_actions[1] & 0xfff;
-
-	if (pl_actions[0] & 0x7000)
-		do_turbo(&PicoPad[0], pl_actions[0]);
-	if (pl_actions[1] & 0x7000)
-		do_turbo(&PicoPad[1], pl_actions[1]);
-
-	events = actions[IN_BINDTYPE_EMU] & PEV_MASK;
-
-	// volume is treated in special way and triggered every frame
-	if (events & (PEV_VOL_DOWN|PEV_VOL_UP))
-		plat_update_volume(1, events & PEV_VOL_UP);
-
-	if ((events ^ prev_events) & PEV_FF) {
-		emu_set_fastforward(events & PEV_FF);
-		plat_update_volume(0, 0);
-		reset_timing = 1;
-	}
-
-	events &= ~prev_events;
-
-	if (PicoAHW == PAHW_PICO)
-		run_events_pico(events);
-	if (events)
-		run_events_ui(events);
-	if (movie_data)
-		update_movie();
-
-	prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;
-}
-
-static void mkdir_path(char *path_with_reserve, int pos, const char *name)
-{
-	strcpy(path_with_reserve + pos, name);
-	if (plat_is_dir(path_with_reserve))
-		return;
-	if (mkdir(path_with_reserve, 0777) < 0)
-		lprintf("failed to create: %s\n", path_with_reserve);
-}
-
-void emu_cmn_forced_frame(int no_scale, int do_emu)
-{
-	int po_old = PicoOpt;
-
-	memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
-
-	PicoOpt &= ~POPT_ALT_RENDERER;
-	PicoOpt |= POPT_ACC_SPRITES;
-	if (!no_scale)
-		PicoOpt |= POPT_EN_SOFTSCALE;
-
-	PicoDrawSetOutFormat(PDF_RGB555, 1);
-	Pico.m.dirtyPal = 1;
-	if (do_emu)
-		PicoFrame();
-	else
-		PicoFrameDrawOnly();
-
-	PicoOpt = po_old;
-}
-
-void emu_init(void)
-{
-	char path[512];
-	int pos;
-
-#if 0
-	// FIXME: handle through menu, etc
-	FILE *f;
-	f = fopen("32X_M_BIOS.BIN", "rb");
-	p32x_bios_m = malloc(2048);
-	fread(p32x_bios_m, 1, 2048, f);
-	fclose(f);
-	f = fopen("32X_S_BIOS.BIN", "rb");
-	p32x_bios_s = malloc(1024);
-	fread(p32x_bios_s, 1, 1024, f);
-	fclose(f);
-#endif
-
-	/* make dirs for saves */
-	pos = plat_get_root_dir(path, sizeof(path) - 4);
-	mkdir_path(path, pos, "mds");
-	mkdir_path(path, pos, "srm");
-	mkdir_path(path, pos, "brm");
-
-	pprof_init();
-
-	make_config_cfg(path);
-	config_readlrom(path);
-
-	PicoInit();
-	PicoMessage = plat_status_msg_busy_next;
-	PicoMCDopenTray = emu_tray_open;
-	PicoMCDcloseTray = emu_tray_close;
-}
-
-void emu_finish(void)
-{
-	// save SRAM
-	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
-		emu_save_load_game(0, 1);
-		SRam.changed = 0;
-	}
-
-	if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {
-		char cfg[512];
-		make_config_cfg(cfg);
-		config_writelrom(cfg);
-#ifndef NO_SYNC
-		sync();
-#endif
-	}
-
-	pprof_finish();
-
-	PicoExit();
-}
-
-static void skip_frame(int do_audio)
-{
-	PicoSkipFrame = do_audio ? 1 : 2;
-	PicoFrame();
-	PicoSkipFrame = 0;
-}
-
-/* our tick here is 1 us right now */
-#define ms_to_ticks(x) (unsigned int)(x * 1000)
-#define get_ticks() plat_get_ticks_us()
-
-void emu_loop(void)
-{
-	int pframes_done;		/* "period" frames, used for sync */
-	int frames_done, frames_shown;	/* actual frames for fps counter */
-	int target_fps, target_frametime;
-	unsigned int timestamp_base = 0, timestamp_fps;
-	char *notice_msg = NULL;
-	char fpsbuff[24];
-	int i;
-
-	fpsbuff[0] = 0;
-
-	/* make sure we are in correct mode */
-	Pico.m.dirtyPal = 1;
-	rendstatus_old = -1;
-
-	PicoLoopPrepare();
-
-	// prepare CD buffer
-	if (PicoAHW & PAHW_MCD)
-		PicoCDBufferInit();
-
-	pemu_loop_prep();
-
-	/* number of ticks per frame */
-	if (Pico.m.pal) {
-		target_fps = 50;
-		target_frametime = ms_to_ticks(1000) / 50;
-	} else {
-		target_fps = 60;
-		target_frametime = ms_to_ticks(1000) / 60 + 1;
-	}
-
-	timestamp_fps = get_ticks();
-	reset_timing = 1;
-
-	frames_done = frames_shown = pframes_done = 0;
-
-	plat_video_wait_vsync();
-
-	/* loop with resync every 1 sec. */
-	while (engineState == PGS_Running)
-	{
-		unsigned int timestamp;
-		int diff, diff_lim;
-
-		pprof_start(main);
-
-		timestamp = get_ticks();
-		if (reset_timing) {
-			reset_timing = 0;
-			timestamp_base = timestamp;
-			pframes_done = 0;
-		}
-
-		// show notice_msg message?
-		if (notice_msg_time != 0)
-		{
-			static int noticeMsgSum;
-			if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {
-				notice_msg_time = 0;
-				plat_status_msg_clear();
-				notice_msg = NULL;
-			} else {
-				int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];
-				if (sum != noticeMsgSum) {
-					plat_status_msg_clear();
-					noticeMsgSum = sum;
-				}
-				notice_msg = noticeMsg;
-			}
-		}
-
-		// second changed?
-		if (timestamp - timestamp_fps >= ms_to_ticks(1000))
-		{
-#ifdef BENCHMARK
-			static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
-			if (++bench == 10) {
-				bench = 0;
-				bench_fps_s = bench_fps;
-				bf[bfp++ & 3] = bench_fps;
-				bench_fps = 0;
-			}
-			bench_fps += frames_shown;
-			sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
-			printf("%s\n", fpsbuff);
-#else
-			if (currentConfig.EmuOpt & EOPT_SHOW_FPS) {
-				sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
-				if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }
-			}
-#endif
-			frames_shown = frames_done = 0;
-			timestamp_fps += ms_to_ticks(1000);
-		}
-#ifdef PFRAMES
-		sprintf(fpsbuff, "%i", Pico.m.frame_count);
-#endif
-
-		if (timestamp - timestamp_base >= ms_to_ticks(1000))
-		{
-			if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)
-				pframes_done = 0;
-			else
-				pframes_done -= target_fps;
-			if (pframes_done < -2) {
-				/* don't drag more than 2 frames behind */
-				pframes_done = -2;
-				timestamp_base = timestamp - 2 * target_frametime;
-			}
-			else
-				timestamp_base += ms_to_ticks(1000);
-		}
-
-		diff = timestamp - timestamp_base;
-		diff_lim = (pframes_done + 1) * target_frametime;
-
-		if (currentConfig.Frameskip >= 0) // frameskip enabled
-		{
-			for (i = 0; i < currentConfig.Frameskip; i++) {
-				emu_update_input();
-				skip_frame(1);
-				pframes_done++; frames_done++;
-				diff_lim += target_frametime;
-
-				if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {
-					timestamp = get_ticks();
-					diff = timestamp - timestamp_base;
-					if (!reset_timing && diff < diff_lim) // we are too fast
-						plat_wait_till_us(timestamp_base + diff_lim);
-				}
-			}
-		}
-		else if (diff > diff_lim)
-		{
-			/* no time left for this frame - skip */
-			/* limit auto frameskip to 8 */
-			if (frames_done / 8 <= frames_shown) {
-				emu_update_input();
-				skip_frame(diff < diff_lim + target_frametime * 16);
-				pframes_done++; frames_done++;
-				continue;
-			}
-		}
-
-		emu_update_input();
-		PicoFrame();
-		pemu_finalize_frame(fpsbuff, notice_msg);
-
-		// plat_video_flip();
-
-		/* frame limiter */
-		if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))
-		{
-			timestamp = get_ticks();
-			diff = timestamp - timestamp_base;
-
-			// sleep or vsync if we are still too fast
-			if (diff < diff_lim)
-			{
-				// we are too fast
-				plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);
-				if (currentConfig.EmuOpt & EOPT_VSYNC)
-					plat_video_wait_vsync();
-			}
-		}
-
-		// XXX: for some plats it might be better to flip before vsync
-		// (due to shadow registers in display hw)
-		plat_video_flip();
-
-		pframes_done++; frames_done++; frames_shown++;
-
-		pprof_end(main);
-	}
-
-	emu_set_fastforward(0);
-
-	// save SRAM
-	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
-		plat_status_msg_busy_first("Writing SRAM/BRAM...");
-		emu_save_load_game(0, 1);
-		SRam.changed = 0;
-	}
-
-	pemu_loop_end();
-
-	// pemu_loop_end() might want to do 1 frame for bg image,
-	// so free CD buffer here
-	if (PicoAHW & PAHW_MCD)
-		PicoCDBufferFree();
-}
-