Repair methods (was Cromemco 3101/Beehive B150 score)

[William Donzelli]

> I worked on a 100MHz (doesn't sound like much, 30 years later :> )
> CPU in the mid 70's.

Damn impressive for the 1970s. What CPU? 

>  The problems I found were all the *different*
> ECL families (10K, 100K, MECL III, etc.) plus all the other
> cruft to interface the real world to them (4000 series CMOS
> for the JTAG stuff, other level translators for the "fast"
> stuff).

10K sucked. MECL III sucked. 100K was the way to go, except for the
relatively skimpy selection. And never mix...

>  And, the colossal *power* requirements (>500W for
> that CPU alone!).

Real computers used real power supplies.

William Donzelli
aw288 at osfn.org