Are there vector tests you can run on individual test points?
I'm troubleshooting a Star Wars vector issue at the moment, you can probe
various tabs on the vector board and check for the correct patterns on an
O-Scope by cycling through dip switch settings in test mode.
Perhaps BZ has a similar feature?
On Sun, Oct 20, 2013 at 7:32 PM, David Shoemaker <davids@oz.net> wrote:
> Working on a BZ boardset.****
>
> ** **
>
> Self test passes clean and has a nice stable picture.****
>
> ** **
>
> Fluke shows all roms / rams good (including long ram test).****
>
> ** **
>
> Known good Aux board and cable.****
>
> ** **
>
> Swapped the state machine prom with known good.****
>
> ** **
>
> Game mode runs fine but the vectors are only about 50% correct. It’s like
> each “frame” draws to some point then loose there mind going scrambled (IE
> when it’s showing the HS’s they are all fine but most of the rest of the
> screen is garbage.****
>
> ** **
>
> A short clip of what I am seeing is attached.****
>
> ** **
>
> I have being going over the vector state machine with a B&K logic
> comparator but no luck on anything solid.****
>
> ** **
>
> Suggestions welcome.****
>
>
> David****
>
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Received on Mon Oct 21 12:22:08 2013
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