diff --git a/src/mame/drivers/ksys573.cpp b/src/mame/drivers/ksys573.cpp
index 62b9b0faebd..7119c5417b1 100644
--- a/src/mame/drivers/ksys573.cpp
+++ b/src/mame/drivers/ksys573.cpp
@@ -2731,14 +2731,20 @@ static INPUT_PORTS_START( hyperbbc )
 	PORT_INCLUDE( konami573 )
 
 	PORT_MODIFY( "IN2" )
-	PORT_BIT( 0x00000100, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 3 )
-	PORT_BIT( 0x00000200, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 3 )
+	PORT_BIT( 0x00000100, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 3 ) PORT_NAME( "3P Red" )
+	PORT_BIT( 0x00000200, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 3 ) PORT_NAME( "3P Blue" )
 	PORT_BIT( 0x00000400, IP_ACTIVE_LOW, IPT_START3 )
-	PORT_BIT( 0x00000800, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 3 )
+	PORT_BIT( 0x00000800, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 3 ) PORT_NAME( "3P Green" )
+	PORT_BIT( 0x00001000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Red" )
+	PORT_BIT( 0x00002000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Green" )
+	PORT_BIT( 0x00004000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Blue" )
 	PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Red" )
+	PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Green" )
+	PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Blue" )
 
 	PORT_MODIFY( "IN3" )
 	PORT_BIT( 0x00000100, IP_ACTIVE_LOW, IPT_UNKNOWN )
@@ -2755,6 +2761,28 @@ static INPUT_PORTS_START( hypbbc2p )
 	PORT_MODIFY( "IN2" )
 	PORT_BIT( 0x00000400, IP_ACTIVE_LOW, IPT_START2 ) /* P1 UP */
 	PORT_BIT( 0x00000080, IP_ACTIVE_LOW, IPT_UNUSED ) /* P2 START */
+	PORT_BIT( 0x00001000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Red" )
+	PORT_BIT( 0x00002000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Green" )
+	PORT_BIT( 0x00004000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 1 ) PORT_NAME( "1P Blue" )
+	PORT_BIT( 0x00000100, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Red" )
+	PORT_BIT( 0x00000200, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Blue" )
+	PORT_BIT( 0x00000800, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER( 2 ) PORT_NAME( "2P Green" )
+	PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+	
+	PORT_MODIFY( "IN3" )
+	PORT_BIT( 0x00000100, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000200, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x00000800, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x01000000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x02000000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x08000000, IP_ACTIVE_LOW, IPT_UNKNOWN )
 INPUT_PORTS_END
 
 static INPUT_PORTS_START( mamboagg )