IBM XT diagnostic ROM

[Roy J. Tellason]

On Wednesday 28 May 2008 16:32, Fred Cisin wrote:
> They used to be readily available from JDR, etc.

I remember people trying to sell us one back when we had the shop...

> In fact, one of the magazines published a DIY version that was an exact
> match for the one that JDR sold.

Do you happen to recall any more detail on that?  I've always wondered how 
those worked,  and a magazine article would be neat to see on it...


-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
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Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin