RE: Re[4]: black widow pcb problem no play no picture clock working

Hi Alex, you're memory is getting bad :) The BW boardset is essentially a
Gravitar set - No AM2901's in sight. I'd suggest swapping in another
working AVG (the 40 pin chip). Also Pokeys can cause funning things to
happen on data lines so you could try removing them. IIRC the board will
run without them in, just no sound or controls...

Cheers,

DanP

-----Original Message-----
From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Alex Yeckley
Sent: 10 August 2005 16:49
To: vectorlist@vectorlist.org
Subject: RE: Re[4]: VECTOR: black widow pcb problem no play no picture clock
working

> unfortunatly the guy only has a logic-probe and volt-meter.
> i also suspect he doesnt understand schematics!

At the risk of self-promotion, it might be best for him to seek professional
help at this point.

> if it was mine i'd dump and compare all the roms and proms, and check
> the cpu and ram before even thinking.

Same here, but I usually don't worry about the PROMs right away.

> are those alu's the bitslice chips used on battlezone/red baron &
> tempest?

Yea, AM2901's. The BW boardset is essentially a Tempest boardset, unless my
memory is really getting bad...

Alex

----
ayeckley@elektronforge.com
www.elektronforge.com
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