Herb and I, with a few minutes of Lee peeking over our shoulders,
systematically walked through the schematic. We made I though to the ROM
and stopped. Ran out of time. Found nothing wrong so far, but you can see
my post on vintagecomputer.net for more details. We found an error in the
original docs and reported it to Lee. He confirmed. In a hurry at the
moment, can get into more details if interested.
-------- Original Message --------
> From: "corey986" <email@example.com>
> Sent: Thursday, December 27, 2012 7:33 PM
> To: firstname.lastname@example.org
> Subject: [midatlanticretro] Ok, did anyone take notes when Lee
Felsenstein helped with the Sol20 workshop
> I have started the de-hacking of the system... I removed all the cards
and the personality module.
> First step, I hooked the keyboard back up using the correct cable. I
reseated the Graphics-Add in module (how common was this module), and
reseated the Z80 daughter board (I don't have a spare 8080 and won't risk
my white ceramic one in my altair).
> I plugged it into a monitor and turned it on....
> All I got was two white scrolling bars across the screen.
> Anyone have a idea where to start looking... I could swear someone else
had that problem at the workshop, but I was in and out.
> BTW: I have determined cosmetically the whole machine needs a
restoration. I will have to sand and re-stain the sides, sand blast the
chassis (it has some rust spots) and respray the metal. Still not sure if
I want to weld in the replacement metal, I kinda like the idea I can open
up the case while it's on. I was actually thinking of replacing the
keyboard screws with thumb screws anyway to make it easier to open. I
plan on making this my "heavy lifting" S100 machine since my Altair is more
of a museum type of piece.
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