SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End ofLife

Roy J. Tellason rtellason at
Mon Jun 5 15:11:35 CDT 2006

On Monday 05 June 2006 02:28 pm, Roger Merchberger wrote:
> >  Add anything working above about 10MHz, and you'll
> >have it about right.
> Why 10Mhz? At least in a computer-centric sense, if sockets weren't
> possible to be used above that freq. how come 2+GHz CPUs can be socketed &
> work, and 400+Mhz memory can be socketed & work fine?

Seems to me I remember somebody or other opining as to how that was more or 
less the practical limit for the S-100 bus...

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"
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin

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