Re: Tempest problem.

Thanks Andrew. I have the alt circuit with the MC3410. Pin 4 was stuck low.
Toggled it, and the problem went away. I'm sure the problem will come back,
When it does, I'll have to check the proceeding circuit to see if the
problem is with the 3410, or somewhere before. But at least I know where the
problem lies.

Thanks very much for pointing me in the right direction.

Kevin

On Mon, Nov 9, 2009 at 3:19 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 <talon.k@gmail.com>
> *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 16 18:29:22 2009