Date   : Thu, 20 Jul 2006 01:01:09 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: Re: 6502 copro diagnostics?

>Message-ID: <44BB9ACA.8070302@...>
 
Jules Richardson <julesrichardsonuk@...> wrote:
> the copro to initialise, but doesn't indicate whether there's a huge chunk
of
> dead RAM in the middle of the memory map (say).
 
If there is faulty RAM, then it will be seen in the same bit all
they way through memory, not in a single place in memory.
 
For instance, if the D0 RAM is faulty, then bit zero of *every*
*single* *memory* *location* will be faulty, and it is highly
unlikely the Tube OS would get far enough to display the sign-on
message.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Our chief weapons are 'who', 'ps -aux', 'kill -9', and a fanatical devotion
to 'reboot -q'.