diff --git a/src/mame/nintendo/vsnes.cpp b/src/mame/nintendo/vsnes.cpp
index e68e28e4f8c..b9e23ff3004 100644
--- a/src/mame/nintendo/vsnes.cpp
+++ b/src/mame/nintendo/vsnes.cpp
@@ -1851,6 +1851,7 @@ static INPUT_PORTS_START( jajamaru )
 	PORT_DIPSETTING(    0x00, "3" )
 	PORT_DIPSETTING(    0x10, "4" )
 	PORT_DIPSETTING(    0x08, "5" )
+	PORT_DIPSETTING(    0x18, "6" )                     // status bar only shows up to 4 reserve lives
 	PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x00, "SW1:!6" )
 	PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x00, "SW1:!7" )
 	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Demo_Sounds ) )  PORT_DIPLOCATION("SW1:!8")
@@ -2330,11 +2331,16 @@ static INPUT_PORTS_START( bnglngby )
 	PORT_DIPSETTING(    0x06, DEF_STR( 1C_4C ) )
 	PORT_DIPSETTING(    0x07, DEF_STR( Free_Play ) )
 	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Lives ) )        PORT_DIPLOCATION("SW1:!4")
-	PORT_DIPSETTING(    0x00, "2" )
-	PORT_DIPSETTING(    0x08, "3" )
-	PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x00, "SW1:!5" )
-	PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x00, "SW1:!6" )
-	PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x00, "SW1:!7" )
+	PORT_DIPSETTING(    0x00, "3" )
+	PORT_DIPSETTING(    0x08, "4" )
+	PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x00, "SW1:!5" )      // stored in $f5, is it ever used?
+// TODO: check if there's a more specific meaning than difficulty for this.
+// The game seems to peg several things to level# ($d2) + DIP determined value ($0233).
+	PORT_DIPNAME( 0x60, 0x00, DEF_STR( Difficulty ) )   PORT_DIPLOCATION("SW1:!6,!7")
+	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
+	PORT_DIPSETTING(    0x40, DEF_STR( Normal ) )
+	PORT_DIPSETTING(    0x20, DEF_STR( Medium ) )
+	PORT_DIPSETTING(    0x60, DEF_STR( Hard ) )
 	PORT_DIPUNKNOWN_DIPLOC( 0x80, 0x00, "SW1:!8" )
 INPUT_PORTS_END
 
@@ -2367,19 +2373,28 @@ static INPUT_PORTS_START( supxevs )
 
 	PORT_START("DSW0")  // bit 0 and 1 read from bit 3 and 4 on $4016, rest of the bits read on $4017
 	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Bonus_Life ) )   PORT_DIPLOCATION("SW1:!1")
-	PORT_DIPSETTING(    0x00, "50000" ) // and every ?
-	PORT_DIPSETTING(    0x01, "70000" ) // and every ?
+	PORT_DIPSETTING(    0x00, "50k, 150k, every 150k" )
+	PORT_DIPSETTING(    0x01, "70k, 200k, every 200k" )
 	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Lives ) )        PORT_DIPLOCATION("SW1:!2")
 	PORT_DIPSETTING(    0x00, "3" )
 	PORT_DIPSETTING(    0x02, "5" )
 	PORT_DIPUNKNOWN_DIPLOC( 0x04, 0x00, "SW1:!3" )
-	PORT_DIPUNKNOWN_DIPLOC( 0x08, 0x00, "SW1:!4" )
+	PORT_DIPNAME( 0x08, 0x00, "Hidden Password Screen" )  PORT_DIPLOCATION("SW1:!4")
+	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
+	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
+// Set to Yes and hold both A and B while pressing P1 start to access Password Screen
+//     Level 2:  5135
+//     Level 3:  3706
+//     Level 4:  6853
+//     Level 5:  3381
+//     Level 6:  3913
+//     Level 7:  2311
 	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Coinage ) )      PORT_DIPLOCATION("SW1:!5,!6")
 	PORT_DIPSETTING(    0x30, DEF_STR( 3C_1C ) )
 	PORT_DIPSETTING(    0x20, DEF_STR( 2C_1C ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
 	PORT_DIPSETTING(    0x10, DEF_STR( 1C_2C ) )
-	PORT_DIPNAME( 0xc0, 0x00, "PPU Type" )          PORT_DIPLOCATION("SW1:!7,!8")
+	PORT_DIPNAME( 0xc0, 0x00, "PPU Type" )              PORT_DIPLOCATION("SW1:!7,!8")
 	PORT_DIPSETTING(    0x00, "RP2C04-0001" )
 	PORT_DIPSETTING(    0x40, "RP2C04-0002" )
 	PORT_DIPSETTING(    0x80, "RP2C04-0003" )