Re: Assistance please...

Well I've got a HP 5005B that you could use if you're near the Baltimore, MD
area, and making a NOP card for the 6502 is really easy. After that it's
simple logic probing from there.

Chris

----- Original Message -----
From: "Mark Shostak" <shostak@directlink.net>
To: <vectorlist@synthcom.com>
Sent: Monday, April 30, 2001 3:58 PM
Subject: Re: VECTOR: Assistance please...

> Know anyone in your neighborhood with a CAT or a Fluke/6502 pod?
>
> ----- Original Message -----
> From: Neil Bradley <neil@synthcom.com>
> To: <vectorlist@synthcom.com>
> Sent: Monday, April 30, 2001 7:39 PM
> Subject: VECTOR: Assistance please...
>
>
> > I'm still getting the 2 high/1 low beep sequence each time I power up my
> > Asteroids Deluxe. This of course is after I made my vector hacks to the
> > board. I've since removed all of my hacks and things are still not
> > working. Here's what I've done:
> >
> > * Swapped out all 2114s with new 2114s and sockets
> > * Verified that each socket has proper electrical connections and isn't
> > shorted to any other pins
> > * Put back the EPROM socket
> > * Tried powering up without the vector EPROMs
> > * Swapped the new RAM around to different sockets - the problem doesn't
> > move
> >
> > The instructions indicate that 2 high/1 low indicate a failure at M3,
but
> > that 2114 has been swapped.
> >
> > I'm now completely baffled. Does anyone have any suggestions as to
> > where/how to start debugging this problem? I have all the parts I need
to
> > continue my vector hack and I'd like to get it going again.
> >
> > Thank you!
> >
> > -->Neil
> >
>
> --------------------------------------------------------------------------
-----
> > Neil Bradley Play a song wrong once and it's a mistake.
> > Synthcom Systems, Inc. Play a song wrong twice and it's Jazz.
> > ICQ #29402898
> >
>
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> >
>
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Received on Tue May 1 00:06:44 2001