Posted by Faded Knight on 31, 2000 at 7:05 AM:
In Reply to: Re: Atari 2600 Trakball question posted by Mario D'Alessio on 29, 2000 at 10:13 PM:
: : Are the old Atari 2600 trackballs optic? or do they use hall-effect to 'see' the metal blades passing through the sensors?
: : Arcade trackballs have optic wheels with many many holes in them, these only have a few large blades.
: I have both a Wico and Atari brand trackball for the 2600. Both use optics, and neither have a few large blades on the encoder wheels. I'd be willing to bet it's optics rather than hall-effect, though.
: I hope this helps.
I have an Atari brand 2600 trackball - have you managed to interface one to MAME & if so how?
Cheers