> Clay Cowgill wrote:
> > (Yeah, these two are pretty close, although Space Duel went to the
> > integrated Vector Address Generator circuit. Chages the stack depth I
> > think...)
>
> ohhh, that is a good thing to know. Isn't the stack depth 4 on Tempest?
> How big is it on the AVG chip? Is this something you found out about
> from those 'insider' Atari docs or did you write a little prog?
>
Actually it's something I heard, so I can't really swear to it's accuracy...
;-) The Tempest stack is 4, and the AVG replacement boards I'm (still)
working on are 4 deep as well. The rumor though is that the AVG ASIC is
only three levels deep due to cost/silicon restrictions at the time. Maybe
Jeff or Anders know for sure from their coding... (I haven't written
anything on SpaceDuel or other ASIC based AVGs.)
-Clay
