On Mon, 31 Aug 1998, David Humphrey wrote:
> Dudes,
>
> My Asteroids CPU displays an anomoly. The X width output
> will momentarily squash the image all the way to the left,
> and then re-focus the screen to the full screen play. It's
> odd, the image will compress X-wise to about 30% of the full
> screen image on the left hand border. I have localized it
> to the CPU, because the monitor is fine with other boards.
> (all right, I know it seems obvious that is was the CPU, not
> the monitor...).
>
> Any thoughts what causes the X-output to freak like this?
> Capacitor attenuation on the CPU somewhere. (I have to dig
> out my schematics again!)
>
The X-width pot is probably bad/broken/flaky.
Try replacing that first....
Joe
