Date   : Tue, 30 Jun 1998 13:42:43 EDT
From   : Gary99129@...
Subject: Re: BBC Micro Display Problems

>The SA5050 is the chip responsible for generating the mode 7 screen, so
>would seem most likely to be at fault.

>Depending on the issue of the beebs, you may find that this chip is
>soldered in, in which case changing it may be more of a problem.

Both are Issue 4 BBC's but in typical fashion the one of them has the chip
soldered to the motherboard.  

Also does anyone know why the one of the chips in IC6 is made by Ferranti
while the one in the other computer is made by Acorn.

Gary