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Diffstat (limited to 'src/mame/drivers/avalnche.c')
-rw-r--r--src/mame/drivers/avalnche.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/avalnche.c b/src/mame/drivers/avalnche.c
index a0ca3b6cbce..9084209f7a4 100644
--- a/src/mame/drivers/avalnche.c
+++ b/src/mame/drivers/avalnche.c
@@ -181,7 +181,7 @@ static INPUT_PORTS_START( avalnche )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* SLAM */
PORT_SERVICE( 0x20, IP_ACTIVE_HIGH)
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1 ) /* Serve */
- PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_VBLANK ) /* VBLANK */
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_VBLANK("screen") /* VBLANK */
PORT_START("PADDLE")
PORT_BIT( 0xff, 0x80, IPT_PADDLE ) PORT_MINMAX(0x40, 0xb7) PORT_SENSITIVITY(50) PORT_KEYDELTA(10) PORT_CENTERDELTA(0)