diff --git a/src/mame/drivers/plygonet.c b/src/mame/drivers/plygonet.c
index 11da416b897..1e7e6558f1c 100644
--- a/src/mame/drivers/plygonet.c
+++ b/src/mame/drivers/plygonet.c
@@ -607,11 +607,12 @@ static const gfx_layout bglayout =
 	1024,
 	4,
 	{ 0, 1, 2, 3 },
-	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, 8*4,
-	  9*4, 10*4, 11*4, 12*4, 13*4, 14*4, 15*4 },
 	{ 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64,
  	  8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
-	128*8
+	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, 8*4,
+	  9*4, 10*4, 11*4, 12*4, 13*4, 14*4, 15*4 },
+
+	  128*8
 };
 
 static GFXDECODE_START( plygonet )
@@ -658,7 +659,7 @@ static MACHINE_DRIVER_START( plygonet )
 	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
 	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
 	MDRV_SCREEN_SIZE(64*8, 32*8)
-	MDRV_SCREEN_VISIBLE_AREA(48, 48+384-1, 0, 32*8-1)
+	MDRV_SCREEN_VISIBLE_AREA(64, 64+368-1, 0, 32*8-1)
 
 	MDRV_PALETTE_LENGTH(32768)
 
diff --git a/src/mame/video/plygonet.c b/src/mame/video/plygonet.c
index 8a4fc73d2e7..d4f5d7d0714 100644
--- a/src/mame/video/plygonet.c
+++ b/src/mame/video/plygonet.c
@@ -78,6 +78,11 @@ static TILEMAP_MAPPER( plygonet_scan )
 	return row * num_cols + (col^1);
 }
 
+TILEMAP_MAPPER( plygonet_scan_cols )
+{
+	return col * num_rows + (row^1);
+}
+
 VIDEO_START( polygonet )
 {
 	static const gfx_layout charlayout =
@@ -109,7 +114,7 @@ VIDEO_START( polygonet )
 	state_save_register_global_array(machine, ttl_vram);
 
 	// set up the roz t-map too
-	roz_tilemap = tilemap_create(machine, roz_get_tile_info, plygonet_scan, 16, 16, 64, 32); 
+	roz_tilemap = tilemap_create(machine, roz_get_tile_info, plygonet_scan_cols, 16, 16, 32, 64); 
 	tilemap_set_transparent_pen(roz_tilemap, 0);
 }