Altair 8800b + drive alignment - test-drb@ccmp.vtda.org

4 Feb 1998

The manual/documentation I have gives a procedure you can follow (manually
flipping the switches all the way) which is a self-test.  Following the
procedure you can check if your 8800b is working correctly.  Using this
procedure I tracked down several problems (loose wires to fron panel) but
still have the address light problem.

I'll track down the procedure and explain further, if there is any interest.

I appreciate the comments about the alignment problem, and can see how
basically I should be concentrating on the Altair first.  So thats what I'll
do.

More soon.
Andrew

-----Original Message-----
From: Allison J Parent &lt;allisonp(a)world.std.com&gt;
To: Discussion re-collecting of classic computers
&lt;classiccmp(a)u.washington.edu&gt;
Date: Thursday, February 05, 1998 4:24 AM
Subject: Re: Altair 8800b + drive alignment

...
 <From CLASSICCMP-owner(a)u.washington.edu  Wed Feb  4
11:40:41 1998

<>  This repair is one of the (I
<> suspect) many that will be required to bring the Altair back to life.
<> I've managed to get it (almost) firing up during the self-test stage
<
<"self-test stage"?  Is this a turnkey model with a boot in ROM,
<or not?

ALTAIR 8800b (with altair disk controller) used a boot program or a boot
rom card and DID NOT have anything resembling PC self test(or any
diagnostics).

Allison