BBC Model B - video help - test-drb@ccmp.vtda.org

22 Feb 1998

This sounds about right.
If I counted the number of characters before the repeat, couldn't I then
identify the stuck line?
Then, perhaps... I could go to the hardware?  Am I making sense?
A

-----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: Sunday, February 22, 1998 11:57 PM
Subject: Re: BBC Model B - video help

...
 Unlikely but possible. More likely is a memory address
error.  A stuck
address line will cause data to repeat 2*n times in the display memory. 