diff --git a/src/HW/VIA/VIAEMDEV.c b/src/HW/VIA/VIAEMDEV.c
index 1366182..bca9b88 100644
--- a/src/HW/VIA/VIAEMDEV.c
+++ b/src/HW/VIA/VIAEMDEV.c
@@ -591,10 +591,11 @@ LOCALPROC VIA1_Clear(void)
 	VIA1_T1IntReady = false;
 }
 
-GLOBALPROC VIA1_Zap(void)
+bool VIA1_Zap(void)
 {
 	VIA1_Clear();
 	VIA1_InterruptRequest = 0;
+	return true;
 }
 
 GLOBALPROC VIA1_Reset(void)
diff --git a/src/HW/VIA/VIAEMDEV.h b/src/HW/VIA/VIAEMDEV.h
index d206029..378f3f4 100644
--- a/src/HW/VIA/VIAEMDEV.h
+++ b/src/HW/VIA/VIAEMDEV.h
@@ -18,7 +18,7 @@
 #define VIAEMDEV_H
 #include <stdint.h>
 
-void VIA1_Zap(void);
+bool VIA1_Zap(void);
 void VIA1_Reset(void);
 
 uint32_t VIA1_Access(uint32_t Data, bool WriteMem, uint32_t addr);
diff --git a/src/PROGMAIN.c b/src/PROGMAIN.c
index aa4ec55..86be268 100644
--- a/src/PROGMAIN.c
+++ b/src/PROGMAIN.c
@@ -19,6 +19,7 @@
 */
 
 #include <string.h>
+#include <assert.h>
 #include "SYSDEPNS.h"
 
 #include "UI/MYOSGLUE.h"
@@ -155,16 +156,6 @@ const DevMethods_t DEVICES[] = {
 	.timebegin = EmVIA2 ? VIA2_ExtraTimeBegin : NULL,
 	.timeend = EmVIA2 ? VIA2_ExtraTimeEnd : NULL,
 	},
-	// Screen
-	{
-	.init = NULL,
-	.reset = NULL,
-	.starttick = Sixtieth_PulseNtfy, // VBlank interrupt
-	.endtick = Screen_EndTickNotify,
-	.subtick = NULL,
-	.timebegin = NULL,
-	.timeend = NULL,
-	},
 	// Sony disk drive
 	{
 	.init = NULL,
@@ -263,7 +254,17 @@ const DevMethods_t DEVICES[] = {
 	.subtick = (SoundEnabled && (CurEmMd != kEmMd_PB100)) ? MacSound_SubTick : NULL,
 	.timebegin = NULL,
 	.timeend = NULL
-	}
+	},
+	// Screen
+	{
+	.init = NULL,
+	.reset = NULL,
+	.starttick = Sixtieth_PulseNtfy, // VBlank interrupt
+	.endtick = Screen_EndTickNotify,
+	.subtick = NULL,
+	.timebegin = NULL,
+	.timeend = NULL,
+	},
 };
 
 LOCALPROC EmulatedHardwareZap(void)
@@ -406,8 +407,7 @@ LOCALFUNC bool InitEmulation(void)
 	int i;
 	for ( i = 0; i < ARRAY_SIZE(DEVICES); i++ ) {
 		if (DEVICES[i].init != NULL) {
-			bool retval = DEVICES[i].init();
-			if (retval == false) { return false; }
+			assert(DEVICES[i].init());
 		}
 	}
 
diff --git a/src/UI/SDL2/OSGLUSD2.c b/src/UI/SDL2/OSGLUSD2.c
index 9fe5408..ee0bc34 100644
--- a/src/UI/SDL2/OSGLUSD2.c
+++ b/src/UI/SDL2/OSGLUSD2.c
@@ -336,13 +336,6 @@ LOCALFUNC bool CreateMainWindow(void)
 	Uint32 flags = 0 /* SDL_WINDOW_HIDDEN */;
 	bool v = false;
 
-#if 1 && 1
-	if (UseMagnify) {
-		NewWindowHeight *= WindowScale;
-		NewWindowWidth *= WindowScale;
-	}
-#endif
-
 #if 1
 	if (UseFullScreen)
 #endif
@@ -396,8 +389,7 @@ LOCALFUNC bool CreateMainWindow(void)
 		NewWindowWidth, NewWindowHeight,
 		flags)))
 	{
-		fprintf(stderr, "SDL_CreateWindow fails: %s\n",
-			SDL_GetError());
+		fprintf(stderr, "SDL_CreateWindow fails: %s\n", SDL_GetError());
 	} else
 	if (NULL == (renderer = SDL_CreateRenderer(
 		main_wind, -1,
@@ -410,34 +402,24 @@ LOCALFUNC bool CreateMainWindow(void)
 			/* would rather not require vsync */
 		)))
 	{
-		fprintf(stderr, "SDL_CreateRenderer fails: %s\n",
-			SDL_GetError());
+		fprintf(stderr, "SDL_CreateRenderer fails: %s\n", SDL_GetError());
 	} else
 	if (NULL == (texture = SDL_CreateTexture(
 		renderer,
-		SDL_PIXELFORMAT_ARGB8888,
+		SDL_PIXELFORMAT_RGBX8888,
 		SDL_TEXTUREACCESS_STREAMING,
-#if UseSDLscaling
 		vMacScreenWidth, vMacScreenHeight
-#else
-		NewWindowWidth, NewWindowHeight
-#endif
 		)))
 	{
-		fprintf(stderr, "SDL_CreateTexture fails: %s\n",
-			SDL_GetError());
+		fprintf(stderr, "SDL_CreateTexture fails: %s\n", SDL_GetError());
 	} else
 	if (NULL == (format = SDL_AllocFormat(SDL_PIXELFORMAT_ARGB8888)))
 	{
-		fprintf(stderr, "SDL_AllocFormat fails: %s\n",
-			SDL_GetError());
+		fprintf(stderr, "SDL_AllocFormat fails: %s\n", SDL_GetError());
 	} else
 	{
-		/* SDL_ShowWindow(main_wind); */
-
 		SDL_RenderClear(renderer);
 
-#if 0
 		SDL_DisplayMode info;
 
 		if (0 != SDL_GetCurrentDisplayMode(0, &info)) {
@@ -446,7 +428,6 @@ LOCALFUNC bool CreateMainWindow(void)
 
 			return false;
 		}
-#endif
 
 #if 1
 		if (UseFullScreen)
diff --git a/src/UI/SDL2/VIDEO.c b/src/UI/SDL2/VIDEO.c
index 512cb1f..89378ef 100644
--- a/src/UI/SDL2/VIDEO.c
+++ b/src/UI/SDL2/VIDEO.c
@@ -22,7 +22,7 @@ bool UseMagnify = (WantInitMagnify != 0);
 
 bool gBackgroundFlag = false;
 bool gTrueBackgroundFlag = false;
-bool CurSpeedStopped = true;
+bool CurSpeedStopped = false;
 SDL_Window *main_wind = NULL;
 SDL_Renderer *renderer = NULL;
 SDL_Texture *texture = NULL;
@@ -66,18 +66,38 @@ GLOBALOSGLUPROC Screen_OutputFrame(uint8_t * src_ptr)
 {
 	if (EmVideoDisable) { return; }
 	
-	uint32_t src_format = GetPixFormatFromDepth(vMacScreenDepth);
+	uint32_t src_format = GetPixFormatFromDepth(vMacScreenDepth+1);
+	void *pixels;
+	int pitch;
 	
+	// Setup source surface
 	SDL_Surface *src = SDL_CreateRGBSurfaceWithFormatFrom(
 		src_ptr, 
 		vMacScreenWidth,
 		vMacScreenHeight,
-		vMacScreenDepth,
+		vMacScreenDepth+1,
 		vMacScreenByteWidth,
 		src_format
 	);
 	
-	SDL_LockTexture(texture, NULL, NULL, NULL);
+	// Setup dst surface
+	SDL_LockTexture(texture, NULL, &pixels, &pitch);
+	SDL_Surface *dst = SDL_CreateRGBSurfaceWithFormatFrom(
+		pixels, 
+		vMacScreenWidth,
+		vMacScreenHeight,
+		32, vMacScreenWidth * 4,
+		SDL_PIXELFORMAT_RGBX8888
+	);
+	
+	// Blit src to dst
+	SDL_BlitSurface(src, NULL, dst, NULL);
+	
+	// Free surfaces
+	SDL_FreeSurface(src);
+	SDL_FreeSurface(dst);
+	
+	// Render the texture
 	SDL_RenderCopy(renderer, texture, NULL, NULL);
 	SDL_UnlockTexture(texture);
 	SDL_RenderPresent(renderer);