diff --git a/src/mame/drivers/centiped.c b/src/mame/drivers/centiped.c
index 651af862b8e..87629df40aa 100644
--- a/src/mame/drivers/centiped.c
+++ b/src/mame/drivers/centiped.c
@@ -9,26 +9,22 @@
         * Maze Invaders (prototype)
         * Bulls Eye Darts
 
-    Centipede sync-prom added by HIGHWAYMAN.
-    The prom pcb location is:P4 and is 256x4
-    (i need to update the dump, this one is read in 8bit-mode)
+    Known ROMs (listed in the manual) that need to be dumped/verified:
 
-Known roms (listed in the manual) that need to be dumped/verified:
+    Centipede:
+      136001-203.d1  <-- Are these the proper labels for the timed version???
+      136001-204.e1
+      136001-205.fh1
+      136001-206.j1
 
-Centipede:
-  136001-203.d1  <-- Are these the proper labels for the timed version???
-  136001-204.e1
-  136001-205.fh1
-  136001-206.j1
+      136001-303.d1  <-- Revision 3 set for the above listed roms
+      136001-304.e1
+      136001-305.fh1
+      136001-306.j1
 
-  136001-303.d1  <-- Revision 3 set for the above listed roms
-  136001-304.e1
-  136001-305.fh1
-  136001-306.j1
-
-Milipede:
-  136013-109.5p
-  136013-110.5r
+    Milipede:
+      136013-109.5p
+      136013-110.5r
 
 ****************************************************************************
 
@@ -1647,10 +1643,8 @@ static MACHINE_DRIVER_START( centiped )
 	MDRV_SCREEN_SIZE(32*8, 32*8)
 	MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 30*8-1)
 	MDRV_GFXDECODE(centiped)
-	MDRV_PALETTE_LENGTH(4+4)
-	MDRV_COLORTABLE_LENGTH(4+4*4*4*4)
+	MDRV_PALETTE_LENGTH(4+4*4*4*4)
 
-	MDRV_PALETTE_INIT(centiped)
 	MDRV_VIDEO_START(centiped)
 	MDRV_VIDEO_UPDATE(centiped)
 
@@ -1683,7 +1677,7 @@ static MACHINE_DRIVER_START( centipdb )
 	/* sound hardware */
 	MDRV_SOUND_REPLACE("pokey", AY8910, 12096000/8)
 	MDRV_SOUND_CONFIG(centipdb_ay8910_interface)
-	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 10.0)
 MACHINE_DRIVER_END
 
 
@@ -1696,7 +1690,7 @@ static MACHINE_DRIVER_START( magworm )
 	/* sound hardware */
 	MDRV_SOUND_REPLACE("pokey", AY8910, 12096000/8)
 	MDRV_SOUND_CONFIG(centipdb_ay8910_interface)
-	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 15.0)
 MACHINE_DRIVER_END
 
 
@@ -1709,10 +1703,8 @@ static MACHINE_DRIVER_START( milliped )
 
 	/* video hardware */
 	MDRV_GFXDECODE(milliped)
-	MDRV_PALETTE_LENGTH(4*4+4*4)
-	MDRV_COLORTABLE_LENGTH(4*4+4*4*4*4*4)
+	MDRV_PALETTE_LENGTH(4*4+4*4*4*4*4)
 
-	MDRV_PALETTE_INIT(milliped)
 	MDRV_VIDEO_START(milliped)
 	MDRV_VIDEO_UPDATE(milliped)
 
@@ -1736,8 +1728,7 @@ static MACHINE_DRIVER_START( warlords )
 
 	/* video hardware */
 	MDRV_GFXDECODE(warlords)
-	MDRV_PALETTE_LENGTH(128)
-	MDRV_COLORTABLE_LENGTH(8*4+8*4)
+	MDRV_PALETTE_LENGTH(8*4+8*4)
 
 	MDRV_PALETTE_INIT(warlords)
 	MDRV_VIDEO_START(warlords)
@@ -1777,9 +1768,7 @@ static MACHINE_DRIVER_START( bullsdrt )
 	MDRV_SCREEN_SIZE(32*8, 32*8)
 	MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 30*8-1)
 	MDRV_GFXDECODE(centiped)
-	MDRV_PALETTE_LENGTH(4+4)
-	MDRV_COLORTABLE_LENGTH(4+4*4*4*4)
-	MDRV_PALETTE_INIT(centiped)
+	MDRV_PALETTE_LENGTH(4+4*4*4*4)
 
 	MDRV_VIDEO_START(bullsdrt)
 	MDRV_VIDEO_UPDATE(bullsdrt)
@@ -1879,6 +1868,7 @@ ROM_START( centipdb )
 	ROM_LOAD( "136001-213.p4",   0x0000, 0x0100, CRC(6fa3093a) SHA1(2b7aeca74c1ae4156bf1878453a047330f96f0a8) )
 ROM_END
 
+
 ROM_START( millpac )
 	ROM_REGION( 0x10000, REGION_CPU1, 0 )
 	ROM_LOAD( "millpac1.1d",  0x2000, 0x0800, CRC(4dd6913d) SHA1(9eca634e1a827f9bbcf3c532d44e175ac4751755) )
@@ -1926,7 +1916,7 @@ ROM_END
 
 
 ROM_START( mazeinv )
-	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code */
+	ROM_REGION( 0x10000, REGION_CPU1, 0 )
 	ROM_LOAD( "005.011",      0x3000, 0x1000, CRC(37129536) SHA1(356cb986a40b332100e00fb72194fd4dade2cba7) )
 	ROM_LOAD( "004.011",      0x4000, 0x1000, CRC(2d0fbf2f) SHA1(9d4c2bc9f80604d1ff5c5bf5a4a78378efdd8b33) )
 	ROM_LOAD( "003.011",      0x5000, 0x1000, CRC(0ff3747c) SHA1(1a7e1c487c24875dada967fb3a9ceaca25b7e2a7) )
@@ -2028,4 +2018,4 @@ GAME( 1982, milliped, 0,        milliped, milliped, 0,        ROT270, "Atari",
 GAME( 1980, warlords, 0,        warlords, warlords, 0,        ROT0,   "Atari",   "Warlords", GAME_SUPPORTS_SAVE )
 GAME( 1981, mazeinv,  0,        mazeinv,  mazeinv,  0,        ROT270, "Atari",   "Maze Invaders (prototype)", 0 )
 
-GAME( 1985, bullsdrt, 0,        bullsdrt, bullsdrt, bullsdrt, ROT270, "Shinkai Inc. (Magic Eletronics Inc. licence)", "Bulls Eye Darts", GAME_IMPERFECT_COLORS | GAME_SUPPORTS_SAVE )
+GAME( 1985, bullsdrt, 0,        bullsdrt, bullsdrt, bullsdrt, ROT270, "Shinkai Inc. (Magic Eletronics Inc. licence)", "Bulls Eye Darts", GAME_WRONG_COLORS | GAME_SUPPORTS_SAVE )
diff --git a/src/mame/includes/centiped.h b/src/mame/includes/centiped.h
index 50e2a57bde3..61942aa536a 100644
--- a/src/mame/includes/centiped.h
+++ b/src/mame/includes/centiped.h
@@ -8,8 +8,6 @@
 
 extern UINT8 centiped_flipscreen, *bullsdrt_tiles_bankram;
 
-PALETTE_INIT( centiped );
-PALETTE_INIT( milliped );
 PALETTE_INIT( warlords );
 
 VIDEO_START( centiped );
diff --git a/src/mame/video/centiped.c b/src/mame/video/centiped.c
index 0cef7974e05..e24c08aa074 100644
--- a/src/mame/video/centiped.c
+++ b/src/mame/video/centiped.c
@@ -57,6 +57,28 @@ static TILE_GET_INFO( bullsdrt_get_tile_info )
 
 
 
+/*************************************
+ *
+ *  Palette init
+ *
+ *************************************/
+
+static void init_penmask(void)
+{
+	int i;
+
+	for (i = 0; i < 64; i++)
+	{
+		UINT8 mask = 1;
+		if (((i >> 0) & 3) == 0) mask |= 2;
+		if (((i >> 2) & 3) == 0) mask |= 4;
+		if (((i >> 4) & 3) == 0) mask |= 8;
+		penmask[i] = mask;
+	}
+}
+
+
+
 /*************************************
  *
  *  Video system start
@@ -67,6 +89,8 @@ VIDEO_START( centiped )
 {
 	bg_tilemap = tilemap_create(centiped_get_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 32,32);
 
+	init_penmask();
+
 	centiped_flipscreen = 0;
 
 	state_save_register_global(centiped_flipscreen);
@@ -88,7 +112,10 @@ VIDEO_START( milliped )
 {
 	bg_tilemap = tilemap_create(milliped_get_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 32,32);
 
+	init_penmask();
+
 	centiped_flipscreen = 0;
+
 	state_save_register_global(centiped_flipscreen);
 }
 
@@ -97,6 +124,8 @@ VIDEO_START( bullsdrt )
 {
 	bg_tilemap = tilemap_create(bullsdrt_get_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 32,32);
 
+	init_penmask();
+
 	centiped_flipscreen = 0;
 }
 
@@ -156,28 +185,6 @@ WRITE8_HANDLER( bullsdrt_sprites_bank_w )
 
 
 
-/*************************************
- *
- *  Palette init
- *
- *************************************/
-
-static void init_penmask(void)
-{
-	int i;
-
-	for (i = 0; i < 64; i++)
-	{
-		UINT8 mask = 1;
-		if (((i >> 0) & 3) == 0) mask |= 2;
-		if (((i >> 2) & 3) == 0) mask |= 4;
-		if (((i >> 4) & 3) == 0) mask |= 8;
-		penmask[i] = mask;
-	}
-}
-
-
-
 /***************************************************************************
 
     Centipede doesn't have a color PROM. Eight RAM locations control
@@ -192,61 +199,64 @@ static void init_penmask(void)
     The alternate bit affects blue and green, not red. The way I weighted its
     effect might not be perfectly accurate, but is reasonably close.
 
+    Centipede is unusual because the sprite color code specifies the
+    colors to use one by one, instead of a combination code.
+    bit 5-4 = color to use for pen 11
+    bit 3-2 = color to use for pen 10
+    bit 1-0 = color to use for pen 01
+    pen 00 is transparent
+
 ***************************************************************************/
 
-#define TOTAL_COLORS(gfxn) (machine->gfx[gfxn]->total_colors * machine->gfx[gfxn]->color_granularity)
-#define COLOR(gfxn,offs) (colortable[machine->drv->gfxdecodeinfo[gfxn].color_codes_start + offs])
-
-PALETTE_INIT( centiped )
-{
-	int i;
-
-	/* characters use colors 0-3 */
-	for (i = 0; i < TOTAL_COLORS(0); i++)
-		COLOR(0,i) = i;
-
-	/* Centipede is unusual because the sprite color code specifies the */
-	/* colors to use one by one, instead of a combination code. */
-	/* bit 5-4 = color to use for pen 11 */
-	/* bit 3-2 = color to use for pen 10 */
-	/* bit 1-0 = color to use for pen 01 */
-	/* pen 00 is transparent */
-	for (i = 0; i < TOTAL_COLORS(1); i += 4)
-	{
-		COLOR(1,i+0) = 0;
-		COLOR(1,i+1) = 4 + ((i >> 2) & 3);
-		COLOR(1,i+2) = 4 + ((i >> 4) & 3);
-		COLOR(1,i+3) = 4 + ((i >> 6) & 3);
-	}
-
-	/* create a pen mask for sprite drawing */
-	init_penmask();
-}
-
-
 WRITE8_HANDLER( centiped_paletteram_w )
 {
-	int r, g, b;
-
 	paletteram[offset] = data;
 
-	r = 0xff * ((~data >> 0) & 1);
-	g = 0xff * ((~data >> 1) & 1);
-	b = 0xff * ((~data >> 2) & 1);
-
-	if (~data & 0x08) /* alternate = 1 */
-	{
-		/* when blue component is not 0, decrease it. When blue component is 0, */
-		/* decrease green component. */
-		if (b) b = 0xc0;
-		else if (g) g = 0xc0;
-	}
-
 	/* bit 2 of the output palette RAM is always pulled high, so we ignore */
 	/* any palette changes unless the write is to a palette RAM address */
 	/* that is actually used */
 	if (offset & 4)
-		palette_set_color(Machine, ((offset >> 1) & 4) | (offset & 3), MAKE_RGB(r, g, b));
+	{
+		rgb_t color;
+
+		int r = 0xff * ((~data >> 0) & 1);
+		int g = 0xff * ((~data >> 1) & 1);
+		int b = 0xff * ((~data >> 2) & 1);
+
+		if (~data & 0x08) /* alternate = 1 */
+		{
+			/* when blue component is not 0, decrease it. When blue component is 0, */
+			/* decrease green component. */
+			if (b) b = 0xc0;
+			else if (g) g = 0xc0;
+		}
+
+		color = MAKE_RGB(r, g, b);
+
+		/* character colors, set directly */
+		if ((offset & 0x08) == 0)
+			palette_set_color(Machine, offset & 0x03, color);
+
+		/* sprite colors - set all the applicable ones */
+		else
+		{
+			int i;
+
+			offset = offset & 0x03;
+
+			for (i = 0; i < 0x100; i += 4)
+			{
+				if (offset == ((i >> 2) & 0x03))
+					palette_set_color(Machine, i + 4 + 1, color);
+
+				if (offset == ((i >> 4) & 0x03))
+					palette_set_color(Machine, i + 4 + 2, color);
+
+				if (offset == ((i >> 6) & 0x03))
+					palette_set_color(Machine, i + 4 + 3, color);
+			}
+		}
+	}
 }
 
 
@@ -265,32 +275,35 @@ WRITE8_HANDLER( centiped_paletteram_w )
 
 PALETTE_INIT( warlords )
 {
-	int i, j;
+	int i;
 
 	for (i = 0; i < machine->drv->total_colors; i++)
 	{
-		int r = ((*color_prom >> 2) & 0x01) * 0xff;
-		int g = ((*color_prom >> 1) & 0x01) * 0xff;
-		int b = ((*color_prom >> 0) & 0x01) * 0xff;
+		UINT8 pen;
+		int r, g, b;
 
-		/* Colors 0x40-0x7f are converted to grey scale as it's used on the
+		if (i < 0x20)
+			/* characters */
+			pen = (((i - 0x00) & 0x1c) << 2) | (((i - 0x00) & 0x03) << 0);
+		else
+			/* sprites */
+			pen = (((i - 0x20) & 0x1c) << 2) | (((i - 0x20) & 0x03) << 2);
+
+		r = ((color_prom[pen] >> 2) & 0x01) * 0xff;
+		g = ((color_prom[pen] >> 1) & 0x01) * 0xff;
+		b = ((color_prom[pen] >> 0) & 0x01) * 0xff;
+
+		/* colors 0x40-0x7f are converted to grey scale as it's used on the
            upright version that had an overlay */
-		if (i >= machine->drv->total_colors / 2)
+		if (pen >= 0x40)
 		{
-			/* Use the standard ratios: r = 30%, g = 59%, b = 11% */
+			/* use the standard ratios: r = 30%, g = 59%, b = 11% */
 			int grey = (r * 0x4d / 0xff) + (g * 0x96 / 0xff) + (b * 0x1c / 0xff);
 			r = g = b = grey;
 		}
-		palette_set_color(machine,i,MAKE_RGB(r,g,b));
-		color_prom++;
-	}
 
-	for (i = 0; i < 8; i++)
-		for (j = 0; j < 4; j++)
-		{
-			COLOR(0,i*4+j) = i*16+j;
-			COLOR(1,i*4+j) = i*16+j*4;
-		}
+		palette_set_color(machine, i, MAKE_RGB(r, g, b));
+	}
 }
 
 
@@ -309,43 +322,21 @@ PALETTE_INIT( warlords )
           blue
     bit 0 blue
 
+    Millipede is unusual because the sprite color code specifies the
+    colors to use one by one, instead of a combination code.
+    bit 7-6 = palette bank (there are 4 groups of 4 colors)
+    bit 5-4 = color to use for pen 11
+    bit 3-2 = color to use for pen 10
+    bit 1-0 = color to use for pen 01
+    pen 00 is transparent
+
 ***************************************************************************/
 
-PALETTE_INIT( milliped )
+static void melliped_mazeinv_set_color(running_machine *machine, offs_t offset, UINT8 data)
 {
-	int i;
-
-	/* characters use colors 0-15 */
-	for (i = 0; i < TOTAL_COLORS(0); i++)
-		COLOR(0,i) = i;
-
-	/* Millipede is unusual because the sprite color code specifies the */
-	/* colors to use one by one, instead of a combination code. */
-	/* bit 7-6 = palette bank (there are 4 groups of 4 colors) */
-	/* bit 5-4 = color to use for pen 11 */
-	/* bit 3-2 = color to use for pen 10 */
-	/* bit 1-0 = color to use for pen 01 */
-	/* pen 00 is transparent */
-	for (i = 0; i < TOTAL_COLORS(1); i += 4)
-	{
-		int base = 16 + 4 * ((i >> 8) & 3);
-		COLOR(1,i+0) = 0;
-		COLOR(1,i+1) = base + ((i >> 2) & 3);
-		COLOR(1,i+2) = base + ((i >> 4) & 3);
-		COLOR(1,i+3) = base + ((i >> 6) & 3);
-	}
-
-	/* create a pen mask for sprite drawing */
-	init_penmask();
-}
-
-
-WRITE8_HANDLER( milliped_paletteram_w )
-{
-	int bit0,bit1,bit2;
-	int r,g,b;
-
-	paletteram[offset] = data;
+	rgb_t color;
+	int bit0, bit1, bit2;
+	int r, g, b;
 
 	/* red component */
 	bit0 = (~data >> 5) & 0x01;
@@ -365,37 +356,50 @@ WRITE8_HANDLER( milliped_paletteram_w )
 	bit2 = (~data >> 2) & 0x01;
 	b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
 
-	palette_set_color(Machine, offset, MAKE_RGB(r, g, b));
+	color = MAKE_RGB(r, g, b);
+
+	/* character colors, set directly */
+	if (offset < 0x10)
+		palette_set_color(machine, offset, color);
+
+	/* sprite colors - set all the applicable ones */
+	else
+	{
+		int i;
+
+		int base = offset & 0x0c;
+
+		offset = offset & 0x03;
+
+		for (i = (base << 6); i < (base << 6) + 0x100; i += 4)
+		{
+			if (offset == ((i >> 2) & 0x03))
+				palette_set_color(machine, i + 0x10 + 1, color);
+
+			if (offset == ((i >> 4) & 0x03))
+				palette_set_color(machine, i + 0x10 + 2, color);
+
+			if (offset == ((i >> 6) & 0x03))
+				palette_set_color(machine, i + 0x10 + 3, color);
+		}
+	}
+}
+
+
+WRITE8_HANDLER( milliped_paletteram_w )
+{
+	paletteram[offset] = data;
+
+	melliped_mazeinv_set_color(Machine, offset, data);
 }
 
 
 WRITE8_HANDLER( mazeinv_paletteram_w )
 {
-	int bit0,bit1,bit2;
-	int r,g,b;
-
 	paletteram[offset] = data;
-	data = memory_region(REGION_PROMS)[~data & 0x0f];
 
-	/* red component */
-	bit0 = (data >> 5) & 0x01;
-	bit1 = (data >> 6) & 0x01;
-	bit2 = (data >> 7) & 0x01;
-	r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
-
-	/* green component */
-	bit0 = 0;
-	bit1 = (data >> 3) & 0x01;
-	bit2 = (data >> 4) & 0x01;
-	g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
-
-	/* blue component */
-	bit0 = (data >> 0) & 0x01;
-	bit1 = (data >> 1) & 0x01;
-	bit2 = (data >> 2) & 0x01;
-	b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
-
-	palette_set_color(Machine, offset, MAKE_RGB(r, g, b));
+	/* the value passed in is a look-up index into the color PROM */
+	melliped_mazeinv_set_color(Machine, offset, ~memory_region(REGION_PROMS)[~data & 0x0f]);
 }