Asteroids Deluxe PCB problem

Grettings vector gurus,

I have an AD PCB with problems. Test mode is fine, no errors. When put
into game mode, it resets over and over. If I tie the watchdog disable
to ground, the game will play, however the score is constantly
blinking, rapid fire wont work, and the bottom of the screen looks
like 888888888888
Here is a video of the gameplay.

http://blip.tv/file/2817770

Thanks for looking, any help is appreciated, I have another AD board I
can use to swap parts for testing.

Jordan B

On Mon, Nov 9, 2009 at 1:19 AM, Andrew Welburn <andy@andysarcade.net> wrote:
> have you checked the 'X' AM6012 DAC @ A10 ? I have seen similar things like
> this..
>
> If its not DAC related, you need to check the vector timers, one is probably
> only counting in one direction.
>
> Andrew Welburn
> www.andys-arcade.com
>
> ----- Original Message -----
> From: Kevin Moore
> To: vectorlist@vectorlist.org
> Sent: Saturday, October 31, 2009 10:43 PM
> Subject: VECTOR: Tempest problem.
> Ok, seems like there something not quite right with this tempest. I'm pretty
> sure it's not supposed to look like this.
> Here's the link to the photos.
>
> http://picasaweb.google.com/Talon.K/Tempest02?feat=directlink
>
> First is of the attract screen,
> Second is of the test screen,
> and lastly the cross hatch pattern.
>
> Any ideas?
>
> Thanks,
> Kevin
>
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Received on Mon Nov 9 22:00:16 2009