Date   : Sat, 18 Mar 2006 15:21:56 -0000
From   : "David Hunt" <dm.hunt@...>
Subject: Re: 65C02 infernal 2nd processor.

> Hi All!
> 
> Does anybody remember whether the "Master Turbo" 2nd processor in the
> USP box is (in)compatible with Model B/OS1.2/Basic2/DFS1.2?
> 
> Its either that its incompatible with something, ir mine has had a
> "Russian Language and OPUS DDOS ONLY" conversion. :-( (or maybe the
> EPROM or RAM is dying...)
> 

Mine worked OK.

Does it work with a normal cheese wedge @ 3MHz ?

One of the wires might have snapped, bad connection, dry solder joint or
something like that as well. Also check PSU, length of ribbon and another
unmodded Beeb.

Dave ;)