X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=common%2Femu.c;h=167f2f09cc1945e2718f567e81a0d8b4f72dbeb8;hb=4bd165c8d8bce1946558c22bcb9a001754115d81;hp=542abf5c7516a56e270e6eb1f3d41e38ac271111;hpb=82abf46f3db8ade517881c03327bdbc0de848eb2;p=libpicofe.git

diff --git a/common/emu.c b/common/emu.c
index 542abf5..167f2f0 100644
--- a/common/emu.c
+++ b/common/emu.c
@@ -5,7 +5,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <ctype.h> // tolower
+#include <stdarg.h>
 #ifndef NO_SYNC
 #include <unistd.h>
 #endif
@@ -16,6 +16,8 @@
 #include "lprintf.h"
 #include "config.h"
 #include "plat.h"
+#include "input.h"
+#include "posix.h"
 
 #include <pico/pico_int.h>
 #include <pico/patch.h>
@@ -23,6 +25,8 @@
 #include <zlib/zlib.h>
 
 
+#define STATUS_MSG_TIMEOUT 2000
+
 void *g_screen_ptr;
 
 #if !SCREEN_SIZE_FIXED
@@ -32,9 +36,9 @@ int g_screen_height = SCREEN_HEIGHT;
 
 char *PicoConfigFile = "config.cfg";
 currentConfig_t currentConfig, defaultConfig;
-char noticeMsg[64] = { 0, };
 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;
 
@@ -42,17 +46,21 @@ int engineState = PGS_Menu;
 char rom_fname_reload[512] = { 0, };
 char rom_fname_loaded[512] = { 0, };
 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;
 
 
-// utilities
+/* don't use tolower() for easy old glibc binary compatibility */
 static void strlwr_(char *string)
 {
 	char *p;
 	for (p = string; *p; p++)
-		*p = (char)tolower(*p);
+		if ('A' <= *p && *p <= 'Z')
+			*p += 'a' - 'A';
 }
 
 static int try_rfn_cut(char *fname)
@@ -72,9 +80,9 @@ static int try_rfn_cut(char *fname)
 	return 0;
 }
 
-static void get_ext(char *file, char *ext)
+static void get_ext(const char *file, char *ext)
 {
-	char *p;
+	const char *p;
 
 	p = file + strlen(file) - 4;
 	if (p < file) p = file;
@@ -83,15 +91,32 @@ static void get_ext(char *file, char *ext)
 	strlwr_(ext);
 }
 
-char *biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303" };
-char *biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303"   };
-char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };
+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;
 
-int emu_findBios(int region, char **bios_file)
+	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)
 {
 	static char bios_path[1024];
 	int i, count;
-	char **files;
+	const char * const *files;
 	FILE *f = NULL;
 
 	if (region == 4) { // US
@@ -109,8 +134,7 @@ int emu_findBios(int region, char **bios_file)
 
 	for (i = 0; i < count; i++)
 	{
-		emu_getMainDir(bios_path, sizeof(bios_path));
-		strcat(bios_path, files[i]);
+		emu_make_path(bios_path, files[i], sizeof(bios_path) - 4);
 		strcat(bios_path, ".bin");
 		f = fopen(bios_path, "rb");
 		if (f) break;
@@ -153,12 +177,13 @@ static unsigned char id_header[0x100];
 
 /* checks if fname points to valid MegaCD image
  * if so, checks for suitable BIOS */
-int emu_cdCheck(int *pregion, char *fname_in)
+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], *fname = fname_in;
+	char ext[5];
 	cue_track_type type = CT_UNKNOWN;
 	cue_data_t *cue_data = NULL;
 
@@ -250,7 +275,7 @@ static int extract_text(char *dest, const unsigned char *src, int len, int swab)
 	return p - dest;
 }
 
-char *emu_makeRomId(void)
+static char *emu_make_rom_id(void)
 {
 	static char id_string[3+0xe*3+0x3*3+0x30*3+3];
 	int pos, swab = 1;
@@ -273,7 +298,7 @@ char *emu_makeRomId(void)
 }
 
 // buffer must be at least 150 byte long
-void emu_getGameName(char *str150)
+void emu_get_game_name(char *str150)
 {
 	int ret, swab = (PicoAHW & PAHW_MCD) ? 0 : 1;
 	char *s, *d;
@@ -289,8 +314,15 @@ void emu_getGameName(char *str150)
 	*d = 0;
 }
 
+static void shutdown_MCD(void)
+{
+	if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
+		Stop_CD();
+	PicoAHW &= ~PAHW_MCD;
+}
+
 // note: this function might mangle rom_fname
-int emu_ReloadRom(char *rom_fname)
+int emu_reload_rom(char *rom_fname)
 {
 	unsigned int rom_size = 0;
 	char *used_rom_name = rom_fname;
@@ -365,26 +397,25 @@ int emu_ReloadRom(char *rom_fname)
 		get_ext(rom_fname, ext);
 	}
 
-	emu_shutdownMCD();
+	shutdown_MCD();
 
 	// check for MegaCD image
-	cd_state = emu_cdCheck(&cd_region, rom_fname);
+	cd_state = emu_cd_check(&cd_region, rom_fname);
 	if (cd_state >= 0 && cd_state != CIT_NOT_CD)
 	{
 		PicoAHW |= PAHW_MCD;
 		// valid CD image, check for BIOS..
 
 		// we need to have config loaded at this point
-		ret = emu_ReadConfig(1, 1);
-		if (!ret) emu_ReadConfig(0, 1);
+		ret = emu_read_config(1, 0);
+		if (!ret) emu_read_config(0, 0);
 		cfg_loaded = 1;
 
 		if (PicoRegionOverride) {
 			cd_region = PicoRegionOverride;
 			lprintf("overrided region to %s\n", cd_region != 4 ? (cd_region == 8 ? "EU" : "JAP") : "USA");
 		}
-		if (!emu_findBios(cd_region, &used_rom_name)) {
-			// bios_help() ?
+		if (!find_bios(cd_region, &used_rom_name)) {
 			PicoAHW &= ~PAHW_MCD;
 			return 0;
 		}
@@ -434,8 +465,8 @@ int emu_ReloadRom(char *rom_fname)
 	if (!(PicoAHW & PAHW_MCD))
 		memcpy(id_header, rom_data + 0x100, sizeof(id_header));
 	if (!cfg_loaded) {
-		ret = emu_ReadConfig(1, 1);
-		if (!ret) emu_ReadConfig(0, 1);
+		ret = emu_read_config(1, 0);
+		if (!ret) emu_read_config(0, 0);
 	}
 
 	lprintf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);
@@ -477,22 +508,17 @@ int emu_ReloadRom(char *rom_fname)
 			// TODO: bits 6 & 5
 		}
 		movie_data[0x18+30] = 0;
-		sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);
+		emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);
 	}
 	else
 	{
 		PicoOpt &= ~POPT_DIS_VDP_FIFO;
-		if (Pico.m.pal) {
-			strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");
-		} else {
-			strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");
-		}
+		emu_status_msg(Pico.m.pal ? "PAL SYSTEM / 50 FPS" : "NTSC SYSTEM / 60 FPS");
 	}
-	emu_noticeMsgUpdated();
 
 	// load SRAM for this ROM
-	if (currentConfig.EmuOpt & EOPT_USE_SRAM)
-		emu_SaveLoadGame(1, 1);
+	if (currentConfig.EmuOpt & EOPT_EN_SRAM)
+		emu_save_load_game(1, 1);
 
 	strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);
 	rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;
@@ -506,12 +532,22 @@ fail:
 	return 0;
 }
 
-
-void emu_shutdownMCD(void)
+int emu_swap_cd(const char *fname)
 {
-	if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
-		Stop_CD();
-	PicoAHW &= ~PAHW_MCD;
+	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;
 }
 
 static void romfname_ext(char *dst, const char *prefix, const char *ext)
@@ -524,7 +560,7 @@ static void romfname_ext(char *dst, const char *prefix, const char *ext)
 	for (; p >= rom_fname_loaded && *p != PATH_SEP_C; p--); p++;
 	*dst = 0;
 	if (prefix) {
-		int len = emu_getMainDir(dst, 512);
+		int len = plat_get_root_dir(dst, 512);
 		strcpy(dst + len, prefix);
 		prefix_len = len + strlen(prefix);
 	}
@@ -537,32 +573,34 @@ static void romfname_ext(char *dst, const char *prefix, const char *ext)
 	if (ext) strcat(dst, ext);
 }
 
+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)
+static void make_config_cfg(char *cfg_buff_512)
 {
-	int len;
-	len = emu_getMainDir(cfg, 512);
-	strncpy(cfg + len, PicoConfigFile, 512-6-1-len);
+	emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);
 	if (config_slot != 0)
 	{
-		char *p = strrchr(cfg, '.');
-		if (p == NULL) p = cfg + strlen(cfg);
+		char *p = strrchr(cfg_buff_512, '.');
+		if (p == NULL)
+			p = cfg_buff_512 + strlen(cfg_buff_512);
 		sprintf(p, ".%i.cfg", config_slot);
 	}
-	cfg[511] = 0;
+	cfg_buff_512[511] = 0;
 }
 
-void emu_packConfig(void)
-{
-	currentConfig.s_PicoOpt = PicoOpt;
-	currentConfig.s_PsndRate = PsndRate;
-	currentConfig.s_PicoRegion = PicoRegionOverride;
-	currentConfig.s_PicoAutoRgnOrder = PicoAutoRgnOrder;
-	currentConfig.s_PicoCDBuffers = PicoCDBuffers;
-}
-
-void emu_unpackConfig(void)
+void emu_set_defconfig(void)
 {
+	memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
 	PicoOpt = currentConfig.s_PicoOpt;
 	PsndRate = currentConfig.s_PsndRate;
 	PicoRegionOverride = currentConfig.s_PicoRegion;
@@ -570,28 +608,22 @@ void emu_unpackConfig(void)
 	PicoCDBuffers = currentConfig.s_PicoCDBuffers;
 }
 
-static void emu_setDefaultConfig(void)
-{
-	memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
-	emu_unpackConfig();
-}
-
-
-int emu_ReadConfig(int game, int no_defaults)
+int emu_read_config(int game, int no_defaults)
 {
 	char cfg[512];
 	int ret;
 
+	if (!no_defaults)
+		emu_set_defconfig();
+
 	if (!game)
 	{
-		if (!no_defaults)
-			emu_setDefaultConfig();
 		make_config_cfg(cfg);
 		ret = config_readsect(cfg, NULL);
 	}
 	else
 	{
-		char *sect = emu_makeRomId();
+		char *sect = emu_make_rom_id();
 
 		// try new .cfg way
 		if (config_slot != 0)
@@ -603,7 +635,7 @@ int emu_ReadConfig(int game, int no_defaults)
 		{
 			// read user's config
 			int vol = currentConfig.volume;
-			emu_setDefaultConfig();
+			emu_set_defconfig();
 			ret = config_readsect(cfg, sect);
 			currentConfig.volume = vol; // make vol global (bah)
 		}
@@ -612,7 +644,8 @@ int emu_ReadConfig(int game, int no_defaults)
 			// read global config, and apply game_def.cfg on top
 			make_config_cfg(cfg);
 			config_readsect(cfg, NULL);
-			ret = config_readsect("game_def.cfg", sect);
+			emu_make_path(cfg, "game_def.cfg", sizeof(cfg));
+			ret = config_readsect(cfg, sect);
 		}
 
 		if (ret == 0)
@@ -621,22 +654,26 @@ int emu_ReadConfig(int game, int no_defaults)
 		}
 	}
 
+	plat_validate_config();
+
 	// some sanity checks
-	if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;
 #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;
-#else
-	if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;
 #endif
-	if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;
+	if (currentConfig.volume < 0 || currentConfig.volume > 99)
+		currentConfig.volume = 50;
+
+	if (ret == 0)
+		config_slot_current = config_slot;
 
-	if (ret == 0) config_slot_current = config_slot;
 	return (ret == 0);
 }
 
 
-int emu_WriteConfig(int is_game)
+int emu_write_config(int is_game)
 {
 	char cfg[512], *game_sect = NULL;
 	int ret, write_lrom = 0;
@@ -649,11 +686,11 @@ int emu_WriteConfig(int is_game)
 		if (config_slot != 0)
 		     sprintf(cfg, "game.%i.cfg", config_slot);
 		else strcpy(cfg,  "game.cfg");
-		game_sect = emu_makeRomId();
-		lprintf("emu_WriteConfig: sect \"%s\"\n", game_sect);
+		game_sect = emu_make_rom_id();
+		lprintf("emu_write_config: sect \"%s\"\n", game_sect);
 	}
 
-	lprintf("emu_WriteConfig: %s ", cfg);
+	lprintf("emu_write_config: %s ", cfg);
 	ret = config_writesect(cfg, game_sect);
 	if (write_lrom) config_writelrom(cfg);
 #ifndef NO_SYNC
@@ -666,57 +703,50 @@ int emu_WriteConfig(int is_game)
 }
 
 
-void emu_writelrom(void)
-{
-	char cfg[512];
-	make_config_cfg(cfg);
-	config_writelrom(cfg);
-#ifndef NO_SYNC
-	sync();
-#endif
-}
-
 /* always using built-in font */
 
-#define mk_text_out(name, type, val) \
+#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 *)g_screen_ptr + x + y * g_screen_width;	\
+	type *screen = (type *)(topleft) + x * step_x + y * step_y;	\
 									\
-	for (i = 0; i < len; i++, screen += 8)				\
+	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 * g_screen_width;		\
-			if (fd&0x80) s[0] = val;			\
-			if (fd&0x40) s[1] = val;			\
-			if (fd&0x20) s[2] = val;			\
-			if (fd&0x10) s[3] = val;			\
-			if (fd&0x08) s[4] = val;			\
-			if (fd&0x04) s[5] = val;			\
-			if (fd&0x02) s[6] = val;			\
-			if (fd&0x01) s[7] = val;			\
+			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_textOut8, unsigned char, 0xf0)
-mk_text_out(emu_textOut16, unsigned short, 0xffff)
+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 emu_updateMovie(void)
+void update_movie(void)
 {
 	int offs = Pico.m.frame_count*3 + 0x40;
 	if (offs+3 > movie_size) {
 		free(movie_data);
 		movie_data = 0;
-		strcpy(noticeMsg, "END OF MOVIE.");
+		emu_status_msg("END OF MOVIE.");
 		lprintf("END OF MOVIE.\n");
-		emu_noticeMsgUpdated();
 	} else {
 		// MXYZ SACB RLDU
 		PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU
@@ -760,7 +790,7 @@ static int try_ropen_file(const char *fname)
 	return 0;
 }
 
-char *emu_GetSaveFName(int load, int is_sram, int slot)
+char *emu_get_save_fname(int load, int is_sram, int slot)
 {
 	static char saveFname[512];
 	char ext[16];
@@ -806,9 +836,9 @@ char *emu_GetSaveFName(int load, int is_sram, int slot)
 	return saveFname;
 }
 
-int emu_checkSaveFile(int slot)
+int emu_check_save_file(int slot)
 {
-	return emu_GetSaveFName(1, 0, slot) ? 1 : 0;
+	return emu_get_save_fname(1, 0, slot) ? 1 : 0;
 }
 
 void emu_setSaveStateCbs(int gz)
@@ -828,18 +858,16 @@ void emu_setSaveStateCbs(int gz)
 	}
 }
 
-int emu_SaveLoadGame(int load, int sram)
+int emu_save_load_game(int load, int sram)
 {
 	int ret = 0;
 	char *saveFname;
 
 	// make save filename
-	saveFname = emu_GetSaveFName(load, sram, state_slot);
+	saveFname = emu_get_save_fname(load, sram, state_slot);
 	if (saveFname == NULL) {
-		if (!sram) {
-			strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED  ");
-			emu_noticeMsgUpdated();
-		}
+		if (!sram)
+			emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");
 		return -1;
 	}
 
@@ -925,19 +953,18 @@ int emu_SaveLoadGame(int load, int sram)
 		}
 		else	ret = -1;
 		if (!ret)
-			strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED        ");
+			emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");
 		else
 		{
-			strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED       ");
+			emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");
 			ret = -1;
 		}
 
-		emu_noticeMsgUpdated();
 		return ret;
 	}
 }
 
-void emu_changeFastForward(int set_on)
+void emu_set_fastforward(int set_on)
 {
 	static void *set_PsndOut = NULL;
 	static int set_Frameskip, set_EmuOpt, is_on = 0;
@@ -951,8 +978,7 @@ void emu_changeFastForward(int set_on)
 		currentConfig.EmuOpt &= ~4;
 		currentConfig.EmuOpt |= 0x40000;
 		is_on = 1;
-		strcpy(noticeMsg, "FAST FORWARD   ");
-		emu_noticeMsgUpdated();
+		emu_status_msg("FAST FORWARD");
 	}
 	else if (!set_on && is_on) {
 		PsndOut = set_PsndOut;
@@ -963,35 +989,74 @@ void emu_changeFastForward(int set_on)
 	}
 }
 
-void emu_RunEventsPico(unsigned int events)
+static void emu_msg_tray_open(void)
 {
-	if (events & (1 << 3)) {
+	emu_status_msg("CD tray opened");
+}
+
+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;
+		if (pico_inp_mode > 2)
+			pico_inp_mode = 0;
 		switch (pico_inp_mode) {
-			case 2: strcpy(noticeMsg, "Input: Pen on Pad      "); break;
-			case 1: strcpy(noticeMsg, "Input: Pen on Storyware"); break;
-			case 0: strcpy(noticeMsg, "Input: Joytick         ");
+			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;
 		}
-		emu_noticeMsgUpdated();
 	}
-	if (events & (1 << 4)) {
+	if (events & PEV_PICO_PPREV) {
 		PicoPicohw.page--;
-		if (PicoPicohw.page < 0) PicoPicohw.page = 0;
-		sprintf(noticeMsg, "Page %i                 ", PicoPicohw.page);
-		emu_noticeMsgUpdated();
+		if (PicoPicohw.page < 0)
+			PicoPicohw.page = 0;
+		emu_status_msg("Page %i", PicoPicohw.page);
 	}
-	if (events & (1 << 5)) {
+	if (events & PEV_PICO_PNEXT) {
 		PicoPicohw.page++;
-		if (PicoPicohw.page > 6) PicoPicohw.page = 6;
-		sprintf(noticeMsg, "Page %i                 ", PicoPicohw.page);
-		emu_noticeMsgUpdated();
+		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);
 }
 
-void emu_DoTurbo(int *pad, int acts)
+static void do_turbo(int *pad, int acts)
 {
 	static int turbo_pad = 0;
 	static unsigned char turbo_cnt[3] = { 0, 0, 0 };
@@ -1015,3 +1080,365 @@ void emu_DoTurbo(int *pad, int acts)
 	*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) &&
+				(((which & PEV_STATE_LOAD) && (currentConfig.EmuOpt & EOPT_CONFIRM_LOAD)) ||
+				 ((which & PEV_STATE_SAVE) && (currentConfig.EmuOpt & 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_blocking(1);
+			while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK))
+				;
+			while ( !((keys = in_menu_wait_any(50)) & (PBTN_MA3|PBTN_MBACK)) )
+				;
+			if (keys & PBTN_MBACK)
+				do_it = 0;
+			while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK))
+				;
+			in_set_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) ? "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_init(void)
+{
+	char path[512];
+	int pos;
+
+	/* 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");
+
+	make_config_cfg(path);
+	config_readlrom(path);
+
+	PicoInit();
+	PicoMessage = plat_status_msg_busy_next;
+	PicoMCDopenTray = emu_msg_tray_open;
+	PicoMCDcloseTray = menu_loop_tray;
+}
+
+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
+	}
+
+	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 oldmodes, 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 */
+	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
+	Pico.m.dirtyPal = 1;
+
+	/* 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;
+	}
+
+	// prepare CD buffer
+	if (PicoAHW & PAHW_MCD)
+		PicoCDBufferInit();
+
+	pemu_loop_prep();
+
+	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;
+		int modes;
+
+		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;
+			}
+		}
+
+		// check for mode changes
+		modes = ((Pico.video.reg[12]&1)<<2) | (Pico.video.reg[1]&8);
+		if (modes != oldmodes) {
+			oldmodes = modes;
+			pemu_video_mode_change(!(modes & 4), (modes & 8));
+		}
+
+		// 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);
+#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;
+				/* don't allow it to drift during heavy slowdowns */
+				if (pframes_done < -5) {
+					reset_timing = 1;
+					continue;
+				}
+				if (pframes_done < -2)
+					pframes_done = -2;
+			}
+			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)) {
+					timestamp = get_ticks();
+					diff = timestamp - timestamp_base;
+					if (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 */
+			if (diff - diff_lim >= ms_to_ticks(200)) {
+				/* if too much behind, reset instead */
+				reset_timing = 1;
+				continue;
+			}
+			emu_update_input();
+			skip_frame(diff < diff_lim + target_frametime * 2);
+			pframes_done++; frames_done++;
+			continue;
+		}
+
+		emu_update_input();
+		PicoFrame();
+
+		/* frame limiter */
+		if (!reset_timing && !(currentConfig.EmuOpt & EOPT_NO_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();
+			}
+		}
+
+		pemu_update_display(fpsbuff, notice_msg);
+
+		pframes_done++; frames_done++; frames_shown++;
+	}
+
+	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();
+}
+