diff --git a/src/mame/drivers/vendetta.c b/src/mame/drivers/vendetta.c
index 2272416a02f..f27e89788db 100644
--- a/src/mame/drivers/vendetta.c
+++ b/src/mame/drivers/vendetta.c
@@ -148,7 +148,7 @@ static READ8_HANDLER( vendetta_eeprom_r )
 
 	res |= 0x02;	//konami_eeprom_ack() << 5;     /* add the ack */
 
-	res |= input_port_read(space->machine, "EEPROM") & 0x0c;	/* test switch */
+	res |= input_port_read(space->machine, "EEPROM") & 0x0d;	/* test switch */
 
 	if (init_eeprom_count)
 	{
@@ -397,7 +397,7 @@ static INPUT_PORTS_START( vendet4p )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
 
 	PORT_START("EEPROM")
-	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_CUSTOM(eeprom_bit_r, NULL)	/* EEPROM data */
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN ) PORT_CUSTOM(eeprom_bit_r, NULL)	/* EEPROM data */
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* EEPROM ready */
 	PORT_SERVICE_NO_TOGGLE(0x04, IP_ACTIVE_LOW)
 	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_VBLANK ) /* not really vblank, object related. Its timed, otherwise sprites flicker */
@@ -476,7 +476,7 @@ static INPUT_PORTS_START( esckids )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
 
 	PORT_START("EEPROM")
-	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_CUSTOM(eeprom_bit_r, NULL)	/* EEPROM data */
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN ) PORT_CUSTOM(eeprom_bit_r, NULL)	/* EEPROM data */
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* EEPROM ready */
 	PORT_SERVICE_NO_TOGGLE(0x04, IP_ACTIVE_LOW)
 	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_VBLANK ) /* not really vblank, object related. Its timed, otherwise sprites flicker */