diff --git a/src/mame/drivers/twin16.c b/src/mame/drivers/twin16.c
index 7ccc24df7b0..decd1fada94 100644
--- a/src/mame/drivers/twin16.c
+++ b/src/mame/drivers/twin16.c
@@ -733,10 +733,11 @@ static MACHINE_CONFIG_START( twin16, twin16_state )
 	MCFG_BUFFERED_SPRITERAM16_ADD("spriteram")
 
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(((double)XTAL_18_432MHz / 2) / (576 * 264))
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2062)) // 32 lines
-	MCFG_SCREEN_SIZE(40*8, 32*8)
-	MCFG_SCREEN_VISIBLE_AREA(0, 40*8-1, 2*8, 30*8-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_18_432MHz/2, 576, 0, 40*8, 264, 2*8, 30*8)
+//	MCFG_SCREEN_REFRESH_RATE(((double)XTAL_18_432MHz / 2) / (576 * 264))
+//	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2062)) // 32 lines
+//	MCFG_SCREEN_SIZE(40*8, 32*8)
+//	MCFG_SCREEN_VISIBLE_AREA(0, 40*8-1, 2*8, 30*8-1)
 	MCFG_SCREEN_UPDATE_DRIVER(twin16_state, screen_update_twin16)
 	MCFG_SCREEN_VBLANK_DRIVER(twin16_state, screen_eof_twin16)
 
@@ -788,7 +789,7 @@ static MACHINE_CONFIG_START( fround, twin16_state )
 
 	MCFG_SCREEN_ADD("screen", RASTER)
 	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
+	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) // TODO: using standard twin16 pixel clock makes video to offset from title screen, why?
 	MCFG_SCREEN_SIZE(40*8, 32*8)
 	MCFG_SCREEN_VISIBLE_AREA(0, 40*8-1, 2*8, 30*8-1)
 	MCFG_SCREEN_UPDATE_DRIVER(twin16_state, screen_update_twin16)
@@ -820,12 +821,12 @@ MACHINE_CONFIG_END
 
 static MACHINE_CONFIG_DERIVED( miaj, twin16 )
 	MCFG_SCREEN_MODIFY("screen")
-	MCFG_SCREEN_VISIBLE_AREA(1*8, 39*8-1, 2*8, 30*8-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_18_432MHz/2, 576, 1*8, 39*8, 264, 2*8, 30*8)
 MACHINE_CONFIG_END
 
 static MACHINE_CONFIG_DERIVED( cuebrickj, twin16 )
 	MCFG_SCREEN_MODIFY("screen")
-	MCFG_SCREEN_VISIBLE_AREA(1*8, 39*8-1, 2*8, 30*8-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_18_432MHz/2, 576, 1*8, 39*8, 264, 2*8, 30*8)
 	MCFG_NVRAM_ADD_0FILL("nvram")
 MACHINE_CONFIG_END
 
diff --git a/src/mame/drivers/yunsun16.c b/src/mame/drivers/yunsun16.c
index d7c890b6d7b..8c592b1a6b4 100644
--- a/src/mame/drivers/yunsun16.c
+++ b/src/mame/drivers/yunsun16.c
@@ -589,10 +589,7 @@ static MACHINE_CONFIG_START( magicbub, yunsun16_state )
 
 	/* video hardware */
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
-	MCFG_SCREEN_SIZE(0x180, 0xe0)
-	MCFG_SCREEN_VISIBLE_AREA(0+0x20, 0x180-1-0x20, 0, 0xe0-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_16MHz/2, 512, 0x20, 0x180-0x20, 260, 0, 0xe0) /* TODO: completely inaccurate */
 	MCFG_SCREEN_UPDATE_DRIVER(yunsun16_state, screen_update_yunsun16)
 
 	MCFG_GFXDECODE(yunsun16)
@@ -627,10 +624,8 @@ static MACHINE_CONFIG_START( shocking, yunsun16_state )
 
 	/* video hardware */
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
-	MCFG_SCREEN_SIZE(0x180, 0xe0)
-	MCFG_SCREEN_VISIBLE_AREA(0, 0x180-1-4, 0, 0xe0-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_16MHz/2, 512, 0, 0x180-4, 260, 0, 0xe0) /* TODO: completely inaccurate */
+
 	MCFG_SCREEN_UPDATE_DRIVER(yunsun16_state, screen_update_yunsun16)
 
 	MCFG_GFXDECODE(yunsun16)
diff --git a/src/mame/drivers/yunsung8.c b/src/mame/drivers/yunsung8.c
index ba1081dad21..2e01f208f78 100644
--- a/src/mame/drivers/yunsung8.c
+++ b/src/mame/drivers/yunsung8.c
@@ -504,10 +504,7 @@ static MACHINE_CONFIG_START( yunsung8, yunsung8_state )
 
 	/* video hardware */
 	MCFG_SCREEN_ADD("screen", RASTER)
-	MCFG_SCREEN_REFRESH_RATE(60)
-	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
-	MCFG_SCREEN_SIZE(512, 256)
-	MCFG_SCREEN_VISIBLE_AREA(0+64, 512-64-1, 0+8, 256-8-1)
+	MCFG_SCREEN_RAW_PARAMS(XTAL_16MHz/2, 512, 64, 512-64, 262, 8, 256-8) /* TODO: completely inaccurate */
 	MCFG_SCREEN_UPDATE_DRIVER(yunsung8_state, screen_update_yunsung8)
 
 	MCFG_GFXDECODE(yunsung8)