Date   : Sun, 02 Feb 2014 15:17:09 -0800
From   : fozztexx@... (Chris Osborn)
Subject: Problems with BBC Micro

Trying to figure out what might be wrong with my BBC Micro. When I go into
Mode 0 and hit return a bunch, the screen freaks out and does this:

http://i.imgur.com/qxrNCRQ.jpg

The computer doesn't crash, I can still type and switch modes and things. 
I found a type-in BASIC program that did a simple RAM test, and it didn't
find anything wrong. I don't have any other BBC Micros available to me, so
it's hard to try swapping parts around to narrow it down.

Has anyone seen anything like this before and might know how to fix it?