5 Jun
2006
5 Jun
'06
3:26 a.m.
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