VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

January_1998
Re: AVG chip schematics


From: Clay Cowgill ( )
Date: Wed Jan 07 1998 - 18:38:37 CST


>As it says there, the RAM is only 12 bits at 4 words. Pretty small.
> jess

Yeah, but that's 48 macrocells in most CPLD's. Figure one macrocell for
each bit in a counter (14 more) and some more stuff that isn't in the
Tempest AVG schematic and you're over a 64 macrocell CPLD and into a 128.
The 128 cell CPLD could still be pretty cost-effective though...

Damn it. Now you've got me interested in the problem again. ;-)

-Clay

Clayton N. Cowgill Engineering Manager
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