Hard Drivin'/Race Drivin' cockpit in the mame driver only has this.
But all the rest have this?
I notice the highest memory address for these operations is on the steel talons/stun runner board that has this
Maybe the other function that could potentially be missing is lurking around within the 0x8000 to 0xfff0 range?
Wonder what 0x9000, 0xa000,0xb000 etc would do?
Code: [Select]
PORT_START("mainpcb:a80000")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START2 ) PORT_NAME("Abort") /* abort */
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_START1 ) PORT_NAME("Key") /* key */
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_COIN3 ) /* aux coin */
PORT_BIT( 0xfff8, IP_ACTIVE_LOW, IPT_UNUSED )
But all the rest have this?
Code: [Select]
PORT_BIT( 0x4000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_TOGGLE PORT_NAME("Center Wheel Edge") /* center edge on steering wheel */
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNUSED )
I notice the highest memory address for these operations is on the steel talons/stun runner board that has this
Code: [Select]
PORT_BIT( 0xfff0, IP_ACTIVE_LOW, IPT_UNUSED )
Maybe the other function that could potentially be missing is lurking around within the 0x8000 to 0xfff0 range?
Wonder what 0x9000, 0xa000,0xb000 etc would do?