diff --git a/src/mame/drivers/dynax.cpp b/src/mame/drivers/dynax.cpp
index 4d9ce423966..742023b7dae 100644
--- a/src/mame/drivers/dynax.cpp
+++ b/src/mame/drivers/dynax.cpp
@@ -1881,19 +1881,18 @@ INPUT_PORTS_END
 
 static INPUT_PORTS_START( hanamai )
 	PORT_START("DSW0")
-	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
+	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
+	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
+	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
+	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( 1C_5C ) )
 	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x10, 0x10, "Censor Nudity" ) // white circle over pubic area when not covered by clothing
 	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ) )
@@ -1910,10 +1909,10 @@ static INPUT_PORTS_START( hanamai )
 	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x02, 0x02, "Starting Higi" ) // minimum 秘技 before each round - used for buying special items
+	PORT_DIPSETTING(    0x02, "0" )
+	PORT_DIPSETTING(    0x00, "960" )
+	PORT_DIPNAME( 0x04, 0x04, "Show CPU Hand" )
 	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
@@ -2041,7 +2040,7 @@ static INPUT_PORTS_START( hnoridur )
 	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
+	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) // moles on gals' faces when on - linked to nudity/censorship setting?
 	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
@@ -2056,9 +2055,9 @@ static INPUT_PORTS_START( hnoridur )
 	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
+	PORT_DIPNAME( 0x40, 0x40, "Starting Higi" ) // minimum 秘技 before each round - used for buying special items
+	PORT_DIPSETTING(    0x40, "10" )
+	PORT_DIPSETTING(    0x00, "500" )
 	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
@@ -2606,13 +2605,13 @@ static INPUT_PORTS_START( hanayara )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 
 	PORT_START("DSW1")
-	PORT_DIPNAME( 0x01, 0x01, "PINFU with TSUMO" )
+	PORT_DIPNAME( 0x01, 0x01, "PINFU with TSUMO" ) // FIXME: doesn't make sense for hanafuda game
 	PORT_DIPSETTING(    0x01, DEF_STR( No ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
 	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )
 	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" )
+	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" ) // moles on gals' faces when on - linked to nudity/censorship setting?
 	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 	PORT_DIPNAME( 0x08, 0x08, "Unknown 2-3*" )
diff --git a/src/mame/drivers/hnayayoi.cpp b/src/mame/drivers/hnayayoi.cpp
index f319d73dbb4..d347cabc7f0 100644
--- a/src/mame/drivers/hnayayoi.cpp
+++ b/src/mame/drivers/hnayayoi.cpp
@@ -297,12 +297,11 @@ static INPUT_PORTS_START( hnayayoi )
 	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
 	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
+	PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_A ) ) // coin B is always 10*coin A
+	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_1C ) )
+	PORT_DIPSETTING(    0x80, DEF_STR( 1C_2C ) )
+	PORT_DIPSETTING(    0x40, DEF_STR( 1C_5C ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( 1C_5C ) )
 
 	PORT_START("COIN")  /* COIN */
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )