Re: Rip Off

On Sun, 26 Nov 2000, chumblespuzz wrote:

> >Have you checked the watchdog??
>
> I would, but I can't find it. I've got 2 problems with these schematics:
> First, they are not Atari! This is the first non-Atari vector game I've
> worked on and *everything* is different. I completely flipped out (and was
> pretty amazed) when I realized that there isn't a microprocessor on here!
> Second, the prints I have and the ones on Spies are both very difficult to
> read. The text is very light and I'm having trouble reading it.

        Most of the board IS a microprocessor. It takes a while for that
to sink in sometimes....

        Some pages of the schematics are difficult to read, even in the
factory manuals.
 
> So, I can't find the watchdog. Where is it? Also, I did find a point on the
> schems that says "Diagnostic test line - tie low for test." This is hanging
> off pin 1 of something (O2?) which is hanging off pin 15 of N2. What's this
> for?

        That line is used when you Exorcie the board -- which you
will probably have to do after you fix your reset problem, because there's
likely some other problem with it. By exorcising, I mean hooking up a
Cinematronics exorcisor so you can perform signature analysis. You can't
do this unless your reset circuit is properly working, however.

Joe

> Thanks,
> -roy-
>
>
> ----- Original Message -----
> From: <MKDUD@aol.com>
> To: <vectorlist@synthcom.com>
> Sent: Saturday, November 25, 2000 10:42 PM
> Subject: Re: VECTOR: Rip Off
>
>
> > In a message dated 11/25/00 6:16:30 PM Eastern Standard Time,
> > chumblespuzz@home.com writes:
> >
> > << I'm working on my Rip Off.It's dead, but the sound board is ok. The LED
> on
> > the main PCB is lit continuously. The manual says it should flash on once
> > upon power up. Any suggestions where to start? >>
> >
> > I think you get this if your reset line is stuck?? Have you checked the
> > watchdog??
> > --------------------------------------------------------------------------
> -
> > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in
> the
> > ** message body to vectorlist-request@synthcom.com. Please direct other
> > ** questions, comments, or problems to neil@synthcom.com.
> >
>
> ---------------------------------------------------------------------------
> ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
> ** message body to vectorlist-request@synthcom.com. Please direct other
> ** questions, comments, or problems to neil@synthcom.com.
>

------------------------------------------------------------------
Joseph J. Welser jwelser@ccwf.cc.utexas.edu
Design Engineer -- Crystal Semiconductor Corporation
Work: jwelser_at_crystal.cirrus.com http://www.crystal.com
P.O. Box 17847; Austin, TX 78760
------------------------------------------------------------------

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Mon Nov 27 18:32:12 2000