diff --git a/src/mame/drivers/stv.c b/src/mame/drivers/stv.c
index a1b335e761f..9839d3bd0e9 100644
--- a/src/mame/drivers/stv.c
+++ b/src/mame/drivers/stv.c
@@ -180,6 +180,7 @@ ToDo / Notes:
 
 #define MASTER_CLOCK_352 57272800
 #define MASTER_CLOCK_320 53748200
+#define PIXEL_CLOCK MASTER_CLOCK_352/4
 
 /**************************************************************************************/
 /*to be added into a stv Header file,remember to remove all the static...*/
@@ -2752,11 +2753,8 @@ static MACHINE_DRIVER_START( stv )
 	MDRV_VIDEO_ATTRIBUTES(VIDEO_UPDATE_AFTER_VBLANK)
 
 	MDRV_SCREEN_ADD("screen", RASTER)
-	MDRV_SCREEN_REFRESH_RATE(60)
-	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(192))	// guess, needed to force video update after V-Blank OUT interrupt
 	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB15)
-	MDRV_SCREEN_SIZE(704*2, 512*2)
-	MDRV_SCREEN_VISIBLE_AREA(0*8, 703, 0*8, 511) // we need to use a resolution as high as the max size it can change to
+	MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, 704, 0, 703, 512, 0, 511) // we need to use a resolution as high as the max size it can change to
 
 	MDRV_PALETTE_LENGTH(2048+(2048*2))//standard palette + extra memory for rgb brightness.
 	MDRV_GFXDECODE(stv)
diff --git a/src/mame/video/stvvdp2.c b/src/mame/video/stvvdp2.c
index ae6fe74b8c9..452513046ae 100644
--- a/src/mame/video/stvvdp2.c
+++ b/src/mame/video/stvvdp2.c
@@ -5295,26 +5295,21 @@ UINT8 stv_get_vblank(running_machine *machine)
 /*some vblank lines measurements (according to Charles MacDonald)*/
 static int get_vblank_duration(running_machine *machine)
 {
-	/* TODO: +64 is probably due of missing pixel clock/screen raw params hook-up.
-             Problem is, I don't know if it's possible to handle that in MAME with
-             all this dynamic resolution babblecrap...
-             */
-
 	if(STV_VDP2_HRES & 4)
 	{
 		switch(STV_VDP2_HRES & 1)
 		{
-			case 0: return 45+64; //31kHz Monitor
-			case 1: return 82+64; //Hi-Vision Monitor
+			case 0: return 45; //31kHz Monitor
+			case 1: return 82; //Hi-Vision Monitor
 		}
 	}
 
 	switch(STV_VDP2_VRES & 3)
 	{
-		case 0: return 39+64; //263-224
-		case 1: return 23+64; //263-240
-		case 2: return 7+64; //263-256
-		case 3: return 7+64; //263-256
+		case 0: return 39; //263-224
+		case 1: return 23; //263-240
+		case 2: return 7; //263-256
+		case 3: return 7; //263-256
 	}
 
 	return 0;