diff --git a/src/mame/drivers/spoker.cpp b/src/mame/drivers/spoker.cpp
index 566159fca3a..2597f49176e 100644
--- a/src/mame/drivers/spoker.cpp
+++ b/src/mame/drivers/spoker.cpp
@@ -337,9 +337,15 @@ static INPUT_PORTS_START( spoker )
 	PORT_DIPSETTING(    0x02, "5" )
 	PORT_DIPSETTING(    0x01, "10" )
 	PORT_DIPSETTING(    0x00, "20" )
-	PORT_DIPUNKNOWN( 0x04, 0x04 )
-	PORT_DIPUNKNOWN( 0x08, 0x08 )
-	PORT_DIPUNKNOWN( 0x10, 0x10 )
+	PORT_DIPNAME( 0x1c, 0x1c, "Key In/Out" )
+	PORT_DIPSETTING(    0x1c, "10 Credits" )
+	PORT_DIPSETTING(    0x18, "20 Credits" )
+	PORT_DIPSETTING(    0x14, "40 Credits" )
+	PORT_DIPSETTING(    0x10, "50 Credits" )
+	PORT_DIPSETTING(    0x0c, "100 Credits" )
+	PORT_DIPSETTING(    0x08, "200 Credits" )
+	PORT_DIPSETTING(    0x04, "250 Credits" )
+	PORT_DIPSETTING(    0x00, "500 Credits" )
 	PORT_DIPUNKNOWN( 0x20, 0x20 )
 	PORT_DIPUNKNOWN( 0x40, 0x40 )
 	PORT_DIPUNKNOWN( 0x80, 0x80 )
@@ -349,7 +355,9 @@ static INPUT_PORTS_START( spoker )
 	PORT_DIPUNKNOWN( 0x02, 0x02 )
 	PORT_DIPUNKNOWN( 0x04, 0x04 )
 	PORT_DIPUNKNOWN( 0x08, 0x08 )
-	PORT_DIPUNKNOWN( 0x10, 0x10 )
+	PORT_DIPNAME( 0x10, 0x10, "Credit Limit" )
+	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
+	PORT_DIPSETTING(    0x00, "On (2000)" )
 	PORT_DIPUNKNOWN( 0x20, 0x20 )
 	PORT_DIPUNKNOWN( 0x40, 0x40 )
 	PORT_DIPUNKNOWN( 0x80, 0x80 )