diff --git a/src/mame/drivers/zodiack.c b/src/mame/drivers/zodiack.c
index d8a48c3dabf..5299cd1fcc5 100644
--- a/src/mame/drivers/zodiack.c
+++ b/src/mame/drivers/zodiack.c
@@ -206,12 +206,12 @@ static INPUT_PORTS_START( zodiack )
 	PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
 
 	PORT_START("DSW1")
-	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )
+	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )		PORT_DIPLOCATION("SW1:1,2")
 	PORT_DIPSETTING(    0x00, "3" )
 	PORT_DIPSETTING(    0x01, "4" )
 	PORT_DIPSETTING(    0x02, "5" )
 	PORT_DIPSETTING(    0x03, "6" )
-	PORT_DIPNAME( 0x1c, 0x00, DEF_STR( Coinage ) )
+	PORT_DIPNAME( 0x1c, 0x00, DEF_STR( Coinage ) )		PORT_DIPLOCATION("SW1:3,4,5")
 	PORT_DIPSETTING(    0x14, DEF_STR( 2C_1C ) )
 	PORT_DIPSETTING(    0x18, "2 Coins/1 Credit  3 Coins/2 Credits" )
 	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
@@ -220,13 +220,13 @@ static INPUT_PORTS_START( zodiack )
 	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_4C ) )
 	PORT_DIPSETTING(    0x10, DEF_STR( 1C_6C ) )
 	PORT_DIPSETTING(    0x1c, DEF_STR( Free_Play ) )
-	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Bonus_Life ) )
+	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Bonus_Life ) )	PORT_DIPLOCATION("SW1:6")
 	PORT_DIPSETTING(    0x00, "20000 50000" )
 	PORT_DIPSETTING(    0x20, "40000 70000" )
-	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Cabinet ) )
+	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Cabinet ) )		PORT_DIPLOCATION("SW1:7")
 	PORT_DIPSETTING(    0x40, DEF_STR( Upright ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
-	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )		PORT_DIPLOCATION("SW1:8") /* Manual shows this one as Service Mode */
 	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x80, DEF_STR( On ) )