Re: star-tech cd

I did a non CAT-BOX test for Asteriods for the rate multipliers, using
the test picture and a frequency counter. I read the frequency on all
the ic's (well most of them) untill I found a difference on a good board
relative to the bad one. Turned out to be a bad ic was causing an
interesting distortion due to a bad bit inside.

John :-#)#

Al Kossow wrote:
>
> "Is that for the Binary Rate Multipliers in Asteroids? (7497's?) I made
> one in a CPLD, but haven't tested it. TI was the only place that seemed
> to ever make the 7497 (and only in original TTL).
> "
> yes

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