X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Femu.c;h=e7993ec4131cb1864d1302c2a4bf0405fab6b513;hb=ee0f881e9f135db6ed9337b99f611b3cae955f8c;hp=5f4a0e2315a90db55929338d7e71649cc8266a10;hpb=b13a934cb86e271a92ef674eb9f428a8e8060f97;p=libpicofe.git

diff --git a/gp2x/emu.c b/gp2x/emu.c
index 5f4a0e2..e7993ec 100644
--- a/gp2x/emu.c
+++ b/gp2x/emu.c
@@ -1,4 +1,4 @@
-// (c) Copyright 2006-2007 notaz, All rights reserved.
+// (c) Copyright 2006-2009 notaz, All rights reserved.
 // Free for non-commercial use.
 
 // For commercial use, separate licencing terms must be obtained.
@@ -6,27 +6,22 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <linux/limits.h>
-#include <ctype.h>
-#include <unistd.h>
-
 #include <stdarg.h>
 
-#include "emu.h"
-#include "gp2x.h"
-#include "usbjoy.h"
-#include "menu.h"
+#include "plat_gp2x.h"
+#include "soc.h"
+#include "../common/plat.h"
+#include "../common/menu.h"
 #include "../common/arm_utils.h"
 #include "../common/fonts.h"
 #include "../common/emu.h"
 #include "../common/config.h"
-#include "cpuctrl.h"
+#include "../linux/sndout_oss.h"
+#include "version.h"
 
-#include <Pico/PicoInt.h>
-#include <Pico/Patch.h>
-#include <Pico/sound/mix.h>
+#include <pico/pico_int.h>
+#include <pico/patch.h>
+#include <pico/sound/mix.h>
 #include <zlib/zlib.h>
 
 //#define PFRAMES
@@ -38,35 +33,29 @@
 #endif
 
 
-int engineState;
-int select_exits = 0;
-
-char romFileName[PATH_MAX];
-
 extern int crashed_940;
 
 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
 static struct timeval noticeMsgTime = { 0, 0 };	// when started showing
 static int osd_fps_x;
 static int gp2x_old_gamma = 100;
-char noticeMsg[64];			// notice msg to draw
-unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer
-int reset_timing = 0;
+static char noticeMsg[40];
+static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];
+unsigned char *PicoDraw2FB = PicoDraw2FB_;
 
-#define PICO_PEN_ADJUST_X 4
-#define PICO_PEN_ADJUST_Y 2
-static int pico_pen_x = 320/2, pico_pen_y = 240/2, pico_inp_mode = 0;
 
-static void emu_msg_cb(const char *msg);
-static void emu_msg_tray_open(void);
+void plat_status_msg(const char *format, ...)
+{
+	va_list vl;
 
+	va_start(vl, format);
+	vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);
+	va_end(vl);
 
-void emu_noticeMsgUpdated(void)
-{
 	gettimeofday(&noticeMsgTime, 0);
 }
 
-void emu_getMainDir(char *dst, int len)
+int plat_get_root_dir(char *dst, int len)
 {
 	extern char **g_argv;
 	int j;
@@ -77,125 +66,71 @@ void emu_getMainDir(char *dst, int len)
 	dst[len] = 0;
 	for (j = strlen(dst); j > 0; j--)
 		if (dst[j] == '/') { dst[j+1] = 0; break; }
-}
-
-void emu_Init(void)
-{
-	// make temp buffer for alt renderer
-	PicoDraw2FB = malloc((8+320)*(8+240+8));
-	if (!PicoDraw2FB)
-	{
-		printf("PicoDraw2FB == 0\n");
-	}
-
-	// make dirs for saves, cfgs, etc.
-	mkdir("mds", 0777);
-	mkdir("srm", 0777);
-	mkdir("brm", 0777);
-	mkdir("cfg", 0777);
 
-	PicoInit();
-	PicoMessage = emu_msg_cb;
-	PicoMCDopenTray = emu_msg_tray_open;
-	PicoMCDcloseTray = menu_loop_tray;
+	return j + 1;
 }
 
 
 static void scaling_update(void)
 {
-	PicoOpt &= ~0x4100;
+	PicoOpt &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);
 	switch (currentConfig.scaling) {
-		default: break; // off
-		case 1:  // hw hor
-		case 2:  PicoOpt |=  0x0100; break; // hw hor+vert
-		case 3:  PicoOpt |=  0x4000; break; // sw hor
+		default:break;
+		case EOPT_SCALE_HW_H:
+		case EOPT_SCALE_HW_HV:
+			PicoOpt |= POPT_DIS_32C_BORDER;
+			break;
+		case EOPT_SCALE_SW_H:
+			PicoOpt |= POPT_EN_SOFTSCALE;
+			break;
 	}
 }
 
 
-void emu_Deinit(void)
+void pemu_prep_defconfig(void)
 {
-	// save SRAM
-	if((currentConfig.EmuOpt & 1) && SRam.changed) {
-		emu_SaveLoadGame(0, 1);
-		SRam.changed = 0;
-	}
-
-	if (!(currentConfig.EmuOpt & 0x20)) {
-		config_writelrom(PicoConfigFile);
-#ifndef NO_SYNC
-		sync();
-#endif
-	}
-
-	free(PicoDraw2FB);
-
-	PicoExit();
-
-	// restore gamma
-	if (gp2x_old_gamma != 100)
-		set_gamma(100, 0);
-}
+	gp2x_soc_t soc;
 
-void emu_prepareDefaultConfig(void)
-{
 	memset(&defaultConfig, 0, sizeof(defaultConfig));
-	defaultConfig.EmuOpt    = 0x1d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds
-	defaultConfig.s_PicoOpt = 0x0f | 0x20e00; // | <- use_940, cd_pcm, cd_cdda, svp drc
+	defaultConfig.EmuOpt    = 0x9d | EOPT_RAM_TIMINGS | 0x600; // | <- confirm_save, cd_leds
+	defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;
 	defaultConfig.s_PsndRate = 44100;
 	defaultConfig.s_PicoRegion = 0; // auto
 	defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
 	defaultConfig.s_PicoCDBuffers = 0;
 	defaultConfig.Frameskip = -1; // auto
-	defaultConfig.CPUclock = 200;
+	defaultConfig.CPUclock = default_cpu_clock;
 	defaultConfig.volume = 50;
-	defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU
-	defaultConfig.KeyBinds[ 4] = 1<<1;
-	defaultConfig.KeyBinds[ 2] = 1<<2;
-	defaultConfig.KeyBinds[ 6] = 1<<3;
-	defaultConfig.KeyBinds[14] = 1<<4;
-	defaultConfig.KeyBinds[13] = 1<<5;
-	defaultConfig.KeyBinds[12] = 1<<6;
-	defaultConfig.KeyBinds[ 8] = 1<<7;
-	defaultConfig.KeyBinds[15] = 1<<26; // switch rend
-	defaultConfig.KeyBinds[10] = 1<<27; // save state
-	defaultConfig.KeyBinds[11] = 1<<28; // load state
-	defaultConfig.KeyBinds[23] = 1<<29; // vol up
-	defaultConfig.KeyBinds[22] = 1<<30; // vol down
 	defaultConfig.gamma = 100;
 	defaultConfig.scaling = 0;
-}
+	defaultConfig.turbo_rate = 15;
 
-void emu_setDefaultConfig(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;
+	soc = soc_detect();
+	if (soc == SOCID_MMSP2)
+		defaultConfig.s_PicoOpt |= POPT_EXT_FM;
 }
 
-void osd_text(int x, int y, const char *text)
+static void osd_text(int x, int y, const char *text)
 {
 	int len = strlen(text)*8;
+	int *p, i, h, offs;
 
 	if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
-		int *p, i, h;
-		x &= ~3; // align x
 		len = (len+3) >> 2;
 		for (h = 0; h < 8; h++) {
-			p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));
-			for (i = len; i; i--, p++) *p = 0xe0e0e0e0;
+			offs = (x + g_screen_width * (y+h)) & ~3;
+			p = (int *) ((char *)g_screen_ptr + offs);
+			for (i = len; i; i--, p++)
+				*p = 0xe0e0e0e0;
 		}
 		emu_textOut8(x, y, text);
 	} else {
-		int *p, i, h;
-		x &= ~1; // align x
 		len = (len+1) >> 1;
 		for (h = 0; h < 8; h++) {
-			p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));
-			for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;
+			offs = (x + g_screen_width * (y+h)) & ~1;
+			p = (int *) ((short *)g_screen_ptr + offs);
+			for (i = len; i; i--, p++)
+				*p = (*p >> 2) & 0x39e7;
 		}
 		emu_textOut16(x, y, text);
 	}
@@ -203,24 +138,22 @@ void osd_text(int x, int y, const char *text)
 
 static void draw_cd_leds(void)
 {
-//	static
 	int old_reg;
-//	if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?
 	old_reg = Pico_mcd->s68k_regs[0];
 
-	if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
+	if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {
 		// 8-bit modes
 		unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
 		unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
-		*(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =
-		*(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =
-		*(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;
-		*(unsigned int *)((char *)gp2x_screen + 320*2+12) =
-		*(unsigned int *)((char *)gp2x_screen + 320*3+12) =
-		*(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;
+		*(unsigned int *)((char *)g_screen_ptr + 320*2+ 4) =
+		*(unsigned int *)((char *)g_screen_ptr + 320*3+ 4) =
+		*(unsigned int *)((char *)g_screen_ptr + 320*4+ 4) = col_g;
+		*(unsigned int *)((char *)g_screen_ptr + 320*2+12) =
+		*(unsigned int *)((char *)g_screen_ptr + 320*3+12) =
+		*(unsigned int *)((char *)g_screen_ptr + 320*4+12) = col_r;
 	} else {
 		// 16-bit modes
-		unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);
+		unsigned int *p = (unsigned int *)((short *)g_screen_ptr + 320*2+4);
 		unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
 		unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
 		*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;
@@ -231,7 +164,7 @@ static void draw_cd_leds(void)
 
 static void draw_pico_ptr(void)
 {
-	unsigned short *p = (unsigned short *)gp2x_screen;
+	unsigned short *p = (unsigned short *)g_screen_ptr;
 
 	// only if pen enabled and for 16bit modes
 	if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;
@@ -251,7 +184,7 @@ static void draw_pico_ptr(void)
 static int EmuScanBegin16(unsigned int num)
 {
 	if (!(Pico.video.reg[1]&8)) num += 8;
-	DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;
+	DrawLineDest = (unsigned short *) g_screen_ptr + g_screen_width * num;
 
 	return 0;
 }
@@ -259,7 +192,7 @@ static int EmuScanBegin16(unsigned int num)
 static int EmuScanBegin8(unsigned int num)
 {
 	if (!(Pico.video.reg[1]&8)) num += 8;
-	DrawLineDest = (unsigned char *)  gp2x_screen + 320 * num;
+	DrawLineDest = (unsigned char *)  g_screen_ptr + g_screen_width * num;
 
 	return 0;
 }
@@ -271,7 +204,7 @@ static void blit(const char *fps, const char *notice)
 {
 	int emu_opt = currentConfig.EmuOpt;
 
-	if (PicoOpt&0x10)
+	if (PicoOpt & POPT_ALT_RENDERER)
 	{
 		// 8bit fast renderer
 		if (Pico.m.dirtyPal) {
@@ -284,14 +217,14 @@ static void blit(const char *fps, const char *notice)
 		if (PicoRead16Hook == PicoSVPRead16)
 			memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);
 		// do actual copy
-		vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);
+		vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);
 	}
-	else if (!(emu_opt&0x80))
+	else if (!(emu_opt & EOPT_16BPP))
 	{
 		// 8bit accurate renderer
 		if (Pico.m.dirtyPal)
 		{
-			int pallen = 0x40;
+			int pallen = 0xc0;
 			Pico.m.dirtyPal = 0;
 			if (Pico.video.reg[0xC]&8) // shadow/hilight mode
 			{
@@ -301,21 +234,14 @@ static void blit(const char *fps, const char *notice)
 				memcpy32(localPal+0xc0, localPal+0x40, 0x40);
 				pallen = 0x100;
 			}
-			else if (rendstatus & PDRAW_ACC_SPRITES) {
-				vidConvCpyRGB32(localPal, Pico.cram, 0x40);
-				memcpy32(localPal+0x40, localPal, 0x40);
-				memcpy32(localPal+0x80, localPal, 0x40);
-				memcpy32(localPal+0xc0, localPal, 0x40);
-				pallen = 0x100;
-			}
 			else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes
 				vidConvCpyRGB32(localPal, Pico.cram, 0x40);
 				vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);
 				vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);
-				pallen = 0xc0;
 			}
 			else {
 				vidConvCpyRGB32(localPal, Pico.cram, 0x40);
+				memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess
 			}
 			if (pallen > 0xc0) {
 				localPal[0xc0] = 0x0000c000;
@@ -329,8 +255,10 @@ static void blit(const char *fps, const char *notice)
 
 	if (notice || (emu_opt & 2)) {
 		int h = 232;
-		if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;
-		if (notice) osd_text(4, h, notice);
+		if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))
+			h -= 8;
+		if (notice)
+			osd_text(4, h, notice);
 		if (emu_opt & 2)
 			osd_text(osd_fps_x, h, fps);
 	}
@@ -339,23 +267,20 @@ static void blit(const char *fps, const char *notice)
 	if (PicoAHW & PAHW_PICO)
 		draw_pico_ptr();
 
-	//gp2x_video_wait_vsync();
 	gp2x_video_flip();
 
-	if (!(PicoOpt&0x10)) {
+	if (!(PicoOpt & POPT_ALT_RENDERER)) {
 		if (!(Pico.video.reg[1]&8)) {
-			if (currentConfig.EmuOpt&0x80) {
-				DrawLineDest = (unsigned short *) gp2x_screen + 320*8;
-			} else {
-				DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;
-			}
+			if (currentConfig.EmuOpt & EOPT_16BPP)
+				DrawLineDest = (unsigned short *) g_screen_ptr + 320*8;
+			else
+				DrawLineDest = (unsigned char  *) g_screen_ptr + 320*8;
 		} else {
-			DrawLineDest = gp2x_screen;
+			DrawLineDest = g_screen_ptr;
 		}
 	}
 }
 
-
 // clears whole screen or just the notice area (in all buffers)
 static void clearArea(int full)
 {
@@ -370,12 +295,27 @@ static void clearArea(int full)
 	}
 }
 
+void plat_status_msg_busy_next(const char *msg)
+{
+	clearArea(0);
+	blit("", msg);
+
+	/* assumption: msg_busy_next gets called only when
+	 * something slow is about to happen */
+	reset_timing = 1;
+}
+
+void plat_status_msg_busy_first(const char *msg)
+{
+	gp2x_memcpy_all_buffers(g_screen_ptr, 0, 320*240*2);
+	plat_status_msg_busy_next(msg);
+}
 
 static void vidResetMode(void)
 {
-	if (PicoOpt&0x10) {
+	if (PicoOpt & POPT_ALT_RENDERER) {
 		gp2x_video_changemode(8);
-	} else if (currentConfig.EmuOpt&0x80) {
+	} else if (currentConfig.EmuOpt & EOPT_16BPP) {
 		gp2x_video_changemode(16);
 		PicoDrawSetColorFormat(1);
 		PicoScanBegin = EmuScanBegin16;
@@ -384,7 +324,7 @@ static void vidResetMode(void)
 		PicoDrawSetColorFormat(2);
 		PicoScanBegin = EmuScanBegin8;
 	}
-	if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
+	if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {
 		// setup pal for 8-bit modes
 		localPal[0xc0] = 0x0000c000; // MCD LEDs
 		localPal[0xd0] = 0x00c00000;
@@ -396,96 +336,79 @@ static void vidResetMode(void)
 	}
 	Pico.m.dirtyPal = 1;
 	// reset scaling
-	if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))
+	if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))
 	     gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);
 	else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);
 }
 
-
-static void emu_msg_cb(const char *msg)
+void plat_video_toggle_renderer(void)
 {
-	if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
-		// 8-bit renderers
-		gp2x_memset_all_buffers(320*232, 0xe0, 320*8);
-		osd_text(4, 232, msg);
-		gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);
-	} else {
-		// 16bit accurate renderer
-		gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);
-		osd_text(4, 232, msg);
-		gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);
-	}
-	gettimeofday(&noticeMsgTime, 0);
-	noticeMsgTime.tv_sec -= 2;
+	if (PicoOpt & POPT_ALT_RENDERER) {
+		PicoOpt &= ~POPT_ALT_RENDERER;
+		currentConfig.EmuOpt |= EOPT_16BPP;
+	} else if (!(currentConfig.EmuOpt & EOPT_16BPP))
+		PicoOpt |= POPT_ALT_RENDERER;
+	else
+		currentConfig.EmuOpt &= ~EOPT_16BPP;
 
-	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
-	reset_timing = 1;
-}
+	vidResetMode();
 
-static void emu_state_cb(const char *str)
-{
-	clearArea(0);
-	blit("", str);
+	if (PicoOpt & POPT_ALT_RENDERER) {
+		plat_status_msg(" 8bit fast renderer");
+	} else if (currentConfig.EmuOpt & EOPT_16BPP) {
+		plat_status_msg("16bit accurate renderer");
+	} else {
+		plat_status_msg(" 8bit accurate renderer");
+	}
 }
 
-static void emu_msg_tray_open(void)
+#if 0 // TODO
+static void RunEventsPico(unsigned int events)
 {
-	strcpy(noticeMsg, "CD tray opened");
-	gettimeofday(&noticeMsgTime, 0);
-}
+	int ret, px, py, lim_x;
+	static int pdown_frames = 0;
 
-static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)
-{
-	if (events & (1 << 3)) {
-		pico_inp_mode++;
-		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         ");
-				PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;
-				break;
-		}
-		gettimeofday(&noticeMsgTime, 0);
-	}
-	if (events & (1 << 4)) {
-		PicoPicohw.page--;
-		if (PicoPicohw.page < 0) PicoPicohw.page = 0;
-		sprintf(noticeMsg, "Page %i                 ", PicoPicohw.page);
-		gettimeofday(&noticeMsgTime, 0);
-	}
-	if (events & (1 << 5)) {
-		PicoPicohw.page++;
-		if (PicoPicohw.page > 6) PicoPicohw.page = 6;
-		sprintf(noticeMsg, "Page %i                 ", PicoPicohw.page);
-		gettimeofday(&noticeMsgTime, 0);
-	}
-	if (pico_inp_mode != 0) {
-		PicoPad[0] &= ~0x0f; // release UDLR
-		if (gp2x_keys & GP2X_UP)   { pico_pen_y--; if (pico_pen_y < 0) pico_pen_y = 0; }
-		if (gp2x_keys & GP2X_DOWN) { pico_pen_y++; if (pico_pen_y > 239-PICO_PEN_ADJUST_Y) pico_pen_y = 239-PICO_PEN_ADJUST_Y; }
-		if (gp2x_keys & GP2X_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
-		if (gp2x_keys & GP2X_RIGHT) {
-			int lim = (Pico.video.reg[12]&1) ? 319 : 255;
-			pico_pen_x++;
-			if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
-				pico_pen_x = lim-PICO_PEN_ADJUST_X;
+	// for F200
+	ret = gp2x_touchpad_read(&px, &py);
+	if (ret >= 0)
+	{
+		if (ret > 35000)
+		{
+			if (pdown_frames++ > 5)
+				PicoPad[0] |= 0x20;
+
+			pico_pen_x = px;
+			pico_pen_y = py;
+			if (!(Pico.video.reg[12]&1)) {
+				pico_pen_x -= 32;
+				if (pico_pen_x <   0) pico_pen_x = 0;
+				if (pico_pen_x > 248) pico_pen_x = 248;
+			}
+			if (pico_pen_y > 224) pico_pen_y = 224;
 		}
-		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);
+		else
+			pdown_frames = 0;
+
+		//if (ret == 0)
+		//	PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;
 	}
 }
+#endif
 
-static void update_volume(int has_changed, int is_up)
+void plat_update_volume(int has_changed, int is_up)
 {
 	static int prev_frame = 0, wait_frames = 0;
 	int vol = currentConfig.volume;
+	int need_low_volume = 0;
+	gp2x_soc_t soc;
+
+	soc = soc_detect();
+	if ((PicoOpt & POPT_EN_STEREO) && soc == SOCID_MMSP2)
+		need_low_volume = 1;
 
 	if (has_changed)
 	{
-		if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)
+		if (need_low_volume && vol < 5 && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)
 			wait_frames++;
 		else {
 			if (is_up) {
@@ -494,16 +417,17 @@ static void update_volume(int has_changed, int is_up)
 				if (vol >  0) vol--;
 			}
 			wait_frames = 0;
-			gp2x_sound_volume(vol, vol);
+			sndout_oss_setvol(vol, vol);
 			currentConfig.volume = vol;
 		}
-		sprintf(noticeMsg, "VOL: %02i", vol);
-		gettimeofday(&noticeMsgTime, 0);
+		plat_status_msg("VOL: %02i", vol);
 		prev_frame = Pico.m.frame_count;
 	}
 
-	// set the right mixer func
-	if (!(PicoOpt&8)) return; // just use defaults for mono
+	if (need_low_volume)
+		return;
+
+	/* set the right mixer func */
 	if (vol >= 5)
 		PsndMix_32_to_16l = mix_32_to_16l_stereo;
 	else {
@@ -512,184 +436,53 @@ static void update_volume(int has_changed, int is_up)
 	}
 }
 
-static void change_fast_forward(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;
-		is_on = 1;
-	}
-	else if (!set_on && is_on) {
-		PsndOut = set_PsndOut;
-		currentConfig.Frameskip = set_Frameskip;
-		currentConfig.EmuOpt = set_EmuOpt;
-		PsndRerate(1);
-		update_volume(0, 0);
-		reset_timing = 1;
-		is_on = 0;
-	}
-}
 
-static void RunEvents(unsigned int which)
+static void updateSound(int len)
 {
-	if (which & 0x1800) // save or load (but not both)
-	{
-		int do_it = 1;
-		if ( emu_checkSaveFile(state_slot) &&
-				(( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load
-				 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save
-			unsigned long keys;
-			blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");
-			while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )
-				usleep(50*1024);
-			if (keys & GP2X_X) do_it = 0;
-			while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release
-				usleep(50*1024);
-			clearArea(0);
-		}
-		if (do_it) {
-			osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
-			PicoStateProgressCB = emu_state_cb;
-			gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);
-			emu_SaveLoadGame((which & 0x1000) >> 12, 0);
-			PicoStateProgressCB = NULL;
-		}
-
-		reset_timing = 1;
-	}
-	if (which & 0x0400) // switch renderer
-	{
-		if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
-		else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;
-		else   currentConfig.EmuOpt &= ~0x80;
-
-		vidResetMode();
-
-		if (PicoOpt&0x10) {
-			strcpy(noticeMsg, " 8bit fast renderer");
-		} else if (currentConfig.EmuOpt&0x80) {
-			strcpy(noticeMsg, "16bit accurate renderer");
-		} else {
-			strcpy(noticeMsg, " 8bit accurate renderer");
-		}
+	if (PicoOpt&8) len<<=1;
 
-		gettimeofday(&noticeMsgTime, 0);
-	}
-	if (which & 0x0300)
-	{
-		if(which&0x0200) {
-			state_slot -= 1;
-			if(state_slot < 0) state_slot = 9;
-		} else {
-			state_slot += 1;
-			if(state_slot > 9) state_slot = 0;
-		}
-		sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
-		gettimeofday(&noticeMsgTime, 0);
-	}
-	if (which & 0x0080) {
-		engineState = PGS_Menu;
-	}
+	/* avoid writing audio when lagging behind to prevent audio lag */
+	if (PicoSkipFrame != 2)
+		sndout_oss_write(PsndOut, len<<1);
 }
 
-static void updateKeys(void)
+void pemu_sound_start(void)
 {
-	unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;
-	static unsigned int prevEvents = 0;
-	int joy, i;
-
-	keys = gp2x_joystick_read(0);
-	if (keys & GP2X_SELECT) {
-		engineState = select_exits ? PGS_Quit : PGS_Menu;
-		// wait until select is released, so menu would not resume game
-		while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);
-	}
-
-	keys &= CONFIGURABLE_KEYS;
-	keys2 = keys;
+	static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
+	int target_fps = Pico.m.pal ? 50 : 60;
 
-	for (i = 0; i < 32; i++)
-	{
-		if (keys2 & (1 << i))
-		{
-			int pl, acts = currentConfig.KeyBinds[i];
-			if (!acts) continue;
-			pl = (acts >> 16) & 1;
-			if (kb_combo_keys & (1 << i))
-			{
-				int u = i+1, acts_c = acts & kb_combo_acts;
-				// let's try to find the other one
-				if (acts_c) {
-					for (; u < 32; u++)
-						if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
-							allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
-							keys2 &= ~((1 << i) | (1 << u));
-							break;
-						}
-				}
-				// add non-combo actions if combo ones were not found
-				if (!acts_c || u == 32)
-					allActions[pl] |= acts & ~kb_combo_acts;
-			} else {
-				allActions[pl] |= acts;
-			}
-		}
-	}
+	PsndOut = NULL;
 
-	// add joy inputs
-	if (num_of_joys > 0)
+	// prepare sound stuff
+	if (currentConfig.EmuOpt & 4)
 	{
-		gp2x_usbjoy_update();
-		for (joy = 0; joy < num_of_joys; joy++) {
-			int btns = gp2x_usbjoy_check2(joy);
-			for (i = 0; i < 32; i++) {
-				if (btns & (1 << i)) {
-					int acts = currentConfig.JoyBinds[joy][i];
-					int pl = (acts >> 16) & 1;
-					allActions[pl] |= acts;
-				}
-			}
+		int snd_excess_add;
+		if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||
+				((PicoOpt&0x200) && crashed_940)) {
+			PsndRerate(Pico.m.frame_count ? 1 : 0);
 		}
+		snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
+		printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
+			PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
+		sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);
+		sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
+		PicoWriteSound = updateSound;
+		plat_update_volume(0, 0);
+		memset(sndBuffer, 0, sizeof(sndBuffer));
+		PsndOut = sndBuffer;
+		PsndRate_old = PsndRate;
+		PicoOpt_old  = PicoOpt;
+		pal_old = Pico.m.pal;
 	}
-
-	PicoPad[0] = (unsigned short) allActions[0];
-	PicoPad[1] = (unsigned short) allActions[1];
-
-	events = (allActions[0] | allActions[1]) >> 16;
-
-	// volume is treated in special way and triggered every frame
-	if (events & 0x6000)
-		update_volume(1, events & 0x2000);
-
-	if ((events ^ prevEvents) & 0x40)
-		change_fast_forward(events & 0x40);
-
-	events &= ~prevEvents;
-
-	if (PicoAHW == PAHW_PICO)
-		RunEventsPico(events, keys);
-
-	if (events) RunEvents(events);
-	if (movie_data) emu_updateMovie();
-
-	prevEvents = (allActions[0] | allActions[1]) >> 16;
 }
 
-
-static void updateSound(int len)
+void pemu_sound_stop(void)
 {
-	if (PicoOpt&8) len<<=1;
+}
 
-	/* avoid writing audio when lagging behind to prevent audio lag */
-	if (PicoSkipFrame != 2)
-		gp2x_sound_write(PsndOut, len<<1);
+void pemu_sound_wait(void)
+{
+	// don't need to do anything, writes will block by themselves
 }
 
 
@@ -701,16 +494,15 @@ static void SkipFrame(int do_audio)
 }
 
 
-void emu_forcedFrame(void)
+void pemu_forced_frame(int opts)
 {
 	int po_old = PicoOpt;
 	int eo_old = currentConfig.EmuOpt;
 
-	PicoOpt &= ~0x0010;
-	PicoOpt |=  0x4080; // soft_scale | acc_sprites
-	currentConfig.EmuOpt |= 0x80;
+	PicoOpt &= ~POPT_ALT_RENDERER;
+	PicoOpt |= opts|POPT_ACC_SPRITES;
+	currentConfig.EmuOpt |= EOPT_16BPP;
 
-	//vidResetMode();
 	PicoDrawSetColorFormat(1);
 	PicoScanBegin = EmuScanBegin16;
 	Pico.m.dirtyPal = 1;
@@ -722,7 +514,7 @@ void emu_forcedFrame(void)
 		clearArea(1);
 	} else	vidCpyM2 = vidCpyM2_40col;
 
-	vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);
+	vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);
 	vidConvCpyRGB32(localPal, Pico.cram, 0x40);
 	gp2x_video_setpalette(localPal, 0x40);
 */
@@ -730,6 +522,10 @@ void emu_forcedFrame(void)
 	currentConfig.EmuOpt = eo_old;
 }
 
+void plat_debug_cat(char *str)
+{
+}
+
 static void simpleWait(int thissec, int lim_time)
 {
 	struct timeval tval;
@@ -780,11 +576,11 @@ static void tga_dump(void)
 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?
 
 	for (i = 0; i < 320*240; i++)
-		if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;
+		if(oldscr[i] != CONV(((unsigned short *)g_screen_ptr)[i])) break;
 	if (i < 320*240)
 	{
 		for (i = 0; i < 320*240; i++)
-			oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);
+			oldscr[i] = CONV(((unsigned short *)g_screen_ptr)[i]);
 		sprintf(name, "%05i.tga", Pico.m.frame_count);
 		f = fopen(name, "wb");
 		if (!f) { printf("!f\n"); exit(1); }
@@ -796,10 +592,9 @@ static void tga_dump(void)
 #endif
 
 
-void emu_Loop(void)
+void pemu_loop(void)
 {
-	static int gp2x_old_clock = 200;
-	static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;
+	static int gp2x_old_clock = -1, EmuOpt_old = 0;
 	char fpsbuff[24]; // fps count c string
 	struct timeval tval; // timing
 	int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync
@@ -809,25 +604,38 @@ void emu_Loop(void)
 
 	printf("entered emu_Loop()\n");
 
+	if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_RAM_TIMINGS) {
+		if (currentConfig.EmuOpt & EOPT_RAM_TIMINGS)
+			set_ram_timings();
+		else
+			unset_ram_timings();
+	}
+
+	if (gp2x_old_clock < 0)
+		gp2x_old_clock = default_cpu_clock;
 	if (gp2x_old_clock != currentConfig.CPUclock) {
 		printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);
-		set_FCLK(currentConfig.CPUclock);
+		gp2x_set_cpuclk(currentConfig.CPUclock);
 		gp2x_old_clock = currentConfig.CPUclock;
 		printf(" done\n");
 	}
 
 	if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {
-		set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));
+		set_lcd_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));
 		gp2x_old_gamma = currentConfig.gamma;
 		printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));
 	}
 
-	if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {
-		if (currentConfig.EmuOpt&0x2000)
-		     set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);
-		else unset_LCD_custom_rate();
+	if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_PSYNC) {
+		if (currentConfig.EmuOpt & EOPT_PSYNC)
+			set_lcd_custom_rate(Pico.m.pal);
+		else
+			unset_lcd_custom_rate();
 	}
 
+	if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_MMUHACK)
+		gp2x_make_fb_bufferable(currentConfig.EmuOpt & EOPT_MMUHACK);
+
 	EmuOpt_old = currentConfig.EmuOpt;
 	fpsbuff[0] = 0;
 
@@ -836,36 +644,13 @@ void emu_Loop(void)
 	scaling_update();
 	Pico.m.dirtyPal = 1;
 	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
-	emu_findKeyBindCombos();
 
 	// pal/ntsc might have changed, reset related stuff
 	target_fps = Pico.m.pal ? 50 : 60;
 	target_frametime = 1000000/target_fps;
 	reset_timing = 1;
 
-	// prepare sound stuff
-	if (currentConfig.EmuOpt & 4)
-	{
-		int snd_excess_add;
-		if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||
-				((PicoOpt&0x200) && crashed_940)) {
-			PsndRerate(Pico.m.frame_count ? 1 : 0);
-		}
-		snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
-		printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
-			PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
-		gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);
-		gp2x_sound_volume(currentConfig.volume, currentConfig.volume);
-		PicoWriteSound = updateSound;
-		update_volume(0, 0);
-		memset(sndBuffer, 0, sizeof(sndBuffer));
-		PsndOut = sndBuffer;
-		PsndRate_old = PsndRate;
-		PicoOpt_old  = PicoOpt;
-		pal_old = Pico.m.pal;
-	} else {
-		PsndOut = NULL;
-	}
+	pemu_sound_start();
 
 	// prepare CD buffer
 	if (PicoAHW & PAHW_MCD) PicoCDBufferInit();
@@ -930,7 +715,8 @@ void emu_Loop(void)
 					vidCpyM2 = vidCpyM2_32col;
 				}
 			}
-			if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode
+			/* want vertical scaling and game is not in 240 line mode */
+			if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(modes&8))
 			     gp2x_video_RGB_setscaling(8, scalex, 224);
 			else gp2x_video_RGB_setscaling(0, scalex, 240);
 			oldmodes = modes;
@@ -970,8 +756,8 @@ void emu_Loop(void)
 			} else {
 				// it is quite common for this implementation to leave 1 fame unfinished
 				// when second changes, but we don't want buffer to starve.
-				if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {
-					updateKeys();
+				if (PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {
+					emu_update_input();
 					SkipFrame(1); pframes_done++;
 				}
 
@@ -986,7 +772,7 @@ void emu_Loop(void)
 		if (currentConfig.Frameskip >= 0) // frameskip enabled
 		{
 			for(i = 0; i < currentConfig.Frameskip; i++) {
-				updateKeys();
+				emu_update_input();
 				SkipFrame(1); pframes_done++; frames_done++;
 				if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled
 					gettimeofday(&tval, 0);
@@ -1007,12 +793,12 @@ void emu_Loop(void)
 				reset_timing = 1;
 				continue;
 			}
-			updateKeys();
+			emu_update_input();
 			SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;
 			continue;
 		}
 
-		updateKeys();
+		emu_update_input();
 		PicoFrame();
 
 		// check time
@@ -1044,26 +830,41 @@ void emu_Loop(void)
 		 frames_done++;  frames_shown++;
 	}
 
-	change_fast_forward(0);
+	emu_set_fastforward(0);
 
-	if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
+	if (PicoAHW & PAHW_MCD)
+		PicoCDBufferFree();
 
 	// save SRAM
-	if((currentConfig.EmuOpt & 1) && SRam.changed) {
-		emu_state_cb("Writing SRAM/BRAM..");
-		emu_SaveLoadGame(0, 1);
+	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;
 	}
 
 	// if in 8bit mode, generate 16bit image for menu background
-	if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))
-		emu_forcedFrame();
+	if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP))
+		pemu_forced_frame(POPT_EN_SOFTSCALE);
 }
 
-
-void emu_ResetGame(void)
+const char *plat_get_credits(void)
 {
-	PicoReset();
-	reset_timing = 1;
+	return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
+		"Credits:\n"
+		"fDave: Cyclone 68000 core,\n"
+		"      base code of PicoDrive\n"
+		"Reesy & FluBBa: DrZ80 core\n"
+		"MAME devs: YM2612 and SN76496 cores\n"
+		"rlyeh and others: minimal SDK\n"
+		"Squidge: mmuhack\n"
+		"Dzz: ARM940 sample\n"
+		"GnoStiC / Puck2099: USB joy code\n"
+		"craigix: GP2X hardware\n"
+		"ketchupgun: skin design\n"
+		"\n"
+		"special thanks (for docs, ideas):\n"
+		" Charles MacDonald, Haze,\n"
+		" Stephane Dallongeville,\n"
+		" Lordus, Exophase, Rokas,\n"
+		" Nemesis, Tasco Deluxe";
 }
-