RE: Battlezone game mode vector mess

Sounds like a great idea for a test rom. Unfortunately not in the current bz software.

David :-)=

-----Original Message-----
From: "Joel Griffin Dodd" <griffindodd@gmail.com>
Sent: ‎10/‎21/‎2013 9:22 AM
To: "vectorlist@vectorlist.org" <vectorlist@vectorlist.org>
Subject: Re: VECTOR: Battlezone game mode vector mess

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 15:30:48 2013