diff --git a/src/mame/drivers/legionna.c b/src/mame/drivers/legionna.c
index a373d0d3f4a..05cb0ba30bf 100644
--- a/src/mame/drivers/legionna.c
+++ b/src/mame/drivers/legionna.c
@@ -435,9 +435,9 @@ static INPUT_PORTS_START( godzilla )
 	SEIBU_COIN_INPUTS	/* coin inputs read through sound cpu */
 
 	PORT_START("DSW1")
-	PORT_DIPNAME( 0x0001, 0x0001, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0001, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0001, 0x0001, DEF_STR( Demo_Sounds ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0001, DEF_STR( On ) )
 	PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(      0x0002, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
@@ -447,7 +447,7 @@ static INPUT_PORTS_START( godzilla )
 	PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Flip_Screen ) )
 	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
 	PORT_DIPNAME( 0x0020, 0x0020, DEF_STR( Unknown ) )
@@ -459,18 +459,18 @@ static INPUT_PORTS_START( godzilla )
 	PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Service_Mode ) )
 	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0100, 0x0100, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0100, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0200, 0x0200, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0200, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0400, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0800, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0700, 0x0700, DEF_STR( Coin_A ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( 4C_1C ) )
+	PORT_DIPSETTING(      0x0100, DEF_STR( 3C_1C ) )
+	PORT_DIPSETTING(      0x0200, DEF_STR( 2C_1C ) )
+	PORT_DIPSETTING(      0x0700, DEF_STR( 1C_1C ) )
+	PORT_DIPSETTING(      0x0600, DEF_STR( 1C_2C ) )
+	PORT_DIPSETTING(      0x0500, DEF_STR( 1C_3C ) )
+	PORT_DIPSETTING(      0x0300, DEF_STR( 1C_4C ) )
+	PORT_DIPSETTING(      0x0400, DEF_STR( 1C_5C ) )
+	PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Coin_B ) )
+	PORT_DIPSETTING(      0x0800, DEF_STR( 1C_1C ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( 1C_2C ) )
 	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(      0x1000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
@@ -480,7 +480,7 @@ static INPUT_PORTS_START( godzilla )
 	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(      0x4000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Free_Play ) )
 	PORT_DIPSETTING(      0x8000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
 
@@ -505,8 +505,8 @@ static INPUT_PORTS_START( godzilla )
 	PORT_START("SYSTEM")
 	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START1 )
 	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_START2 )
-	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNKNOWN )
-	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME(DEF_STR( Test ))
+	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_SERVICE1 )
 	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )