Re: NEED SOME HELP with a DEAD STAR WARS BOARDSET....

Try liftting the reset pin on the 6809, tie it high, and see if you make
any further progress

Joel-

----- Original Message -----
From: "Stempak Arcadius-ASTEMPA1" <ASTEMPA1@motorola.com>
To: <vectorlist@synthcom.com>
Cc: "Stempak Arcadius-ASTEMPA1" <ASTEMPA1@motorola.com>
Sent: Tuesday, September 24, 2002 4:48 PM
Subject: RE: VECTOR: NEED SOME HELP with a DEAD STAR WARS BOARDSET....

> Anthony,
> *******
>
> I attempted to Trace back from the RESET CKT
> and indeed at the point where the GND and RESET
> POINTS on the Board are present the RESET PIN is
> Stuck LOW all the time.
>
> Does anyone, or yourself, know what IC's
> actually make up the RESET CKT Going back up
> to the 6809 CPU ???
>
> O.K. a lot to ask for but thought I would ask
> just the same.
>
>
> Arcadius....... :-)
>
> -----Original Message-----
> From: Anthony Ramos [mailto:aramos@ele-mental.org]
> Sent: Tuesday, September 24, 2002 12:56 PM
> To: vectorlist@synthcom.com
> Subject: Re: VECTOR: NEED SOME HELP with a DEAD STAR WARS BOARDSET....
>
>
> Right. A correctly functioning watchdog circuit only *pulses*
> the RESET line, then watches again, and pulses again, if
> necessary. On a bad board with a good watchdog, it does
> this: ~~~~~_~~~~~_~~~~~_~~~~~_~~~~~ etc.
>
> RESET stuck low is almost certainly due to a bad watchdog
> circuit. If you don't have schematics, or you can't read them,
> maybe someone here can help.
>
> By they way, have you made sure the reset *button* isn't "stuck
> low"? ;-)
>
> -aramos
>
> On Monday, September 23, 2002, at 09:30 PM, Stempak
> Arcadius-ASTEMPA1 wrote:
>
> > So question is, since the RST on the CPU on this STAR WARS MAIN is
> > Always Stuck LOW, and from what I read should Only go LOW when
> > the Board is
> > actually RESET.
> -
> Anthony Ramos -- aramos@ele-mental.org / aramos@hyperreal.org
> phone: 503.236.6303 / mobile: 503.267.3519
> 600 Southeast 39th Avenue #3, Portland, Oregon 97214 USA
>
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Received on Tue Sep 24 17:40:45 2002