HP 300 (was: "what the hell")

From: Bob Shannon <bshannon_at_tiac.net>
Date: Thu Jul 26 19:26:04 2001

There are some 1802 varients that use SOS, but your every-day
1802 from RCA was not SOS.



Eric Dittman wrote:

> > I think it's using sapphire as the substrate for the chip. ISTR, this is
> > done primarily in space applications where radiation hardening is
> > required.
> >
> > > > The CPU was CISC, silicon-on-saphire, and
> > >
> > > What a very interesting little machine. I am most intrigued. What do you
> > > mean by "silicon on saphire" though?
>
> Didn't the 1802 microprocessor use this technology?
> --
> Eric Dittman
> dittman_at_dittman.net
Received on Thu Jul 26 2001 - 19:26:04 BST