diff --git a/src/mame/drivers/toaplan1.c b/src/mame/drivers/toaplan1.c
index 50ba2c37687..067a3156a38 100644
--- a/src/mame/drivers/toaplan1.c
+++ b/src/mame/drivers/toaplan1.c
@@ -345,6 +345,17 @@ To Do:
 #include "includes/toaplan1.h"
 #include "sound/3812intf.h"
 
+// vfreq - 57.59 Hz
+// hfreq - ? kHz
+#define PIXEL_CLOCK			(XTAL_28MHz/4)
+
+#define HTOTAL				(464)
+#define HBEND				(0)
+#define HBSTART				(320)
+
+#define VTOTAL				(262)
+#define VBEND				(0)
+#define VBSTART				(256)
 
 
 /***************************** 68000 Memory Map *****************************/
@@ -1526,8 +1537,7 @@ static MACHINE_CONFIG_START( rallybik, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(55.14)		/* verified on pcb */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x288 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
 	MCFG_SCREEN_UPDATE_STATIC(rallybik)
 	MCFG_SCREEN_EOF(rallybik)
@@ -1565,8 +1575,7 @@ static MACHINE_CONFIG_START( truxton, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(57.59)		/* verified on pcb */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x320 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)
@@ -1604,8 +1613,7 @@ static MACHINE_CONFIG_START( hellfire, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x240 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 16, 255)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)
@@ -1643,8 +1651,7 @@ static MACHINE_CONFIG_START( zerowing, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE( (XTAL_28MHz / 4) / (450 * 282) )	/* fixed by SUZ */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x240 mostly active, 512x512 actually used */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 16, 255)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)
@@ -1686,8 +1693,7 @@ static MACHINE_CONFIG_START( demonwld, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(55.14)		/* verified on pcb */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x240 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 16, 255)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)
@@ -1723,8 +1729,7 @@ static MACHINE_CONFIG_START( samesame, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(57.59)		/* verified on pcb */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x320 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(samesame)
@@ -1762,8 +1767,7 @@ static MACHINE_CONFIG_START( outzone, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x256 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)
@@ -1799,8 +1803,7 @@ static MACHINE_CONFIG_START( vimana, toaplan1_state )
 	MCFG_VIDEO_ATTRIBUTES(VIDEO_UPDATE_BEFORE_VBLANK)
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(57.59)		/* verified on pcb */
-	MCFG_SCREEN_SIZE(512, 512)	/* 512x256 active */
+	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
 	MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
 	MCFG_SCREEN_UPDATE_STATIC(toaplan1)
 	MCFG_SCREEN_EOF(toaplan1)