2 Jan
2006
2 Jan
'06
10:06 a.m.
On Jan 2 2006, 10:13, Tim Shoppa wrote:
listed the
Pete Turnbull <pete at dunnington.plus.com>
wrote:
> It was used because there was a rad-hard silicon-on-sapphire
version,
> and then some people used the standard versions
so they could use
the
same code and
tools.
Up until just a few years ago (2002?), Harris/Intersil web pages SOS 1802 as a current product, along with more
conventional CMOS
1802's
and support chips.
I'm not so sure they were really available, though. Take a look at
http://www.amsat.org/amsat/articles/g3ruh/124.html
If I have the chronology right, Harris bought much of
RCA's line in
the 90's and Intersil bought them out a few years later.
But they've been dropping a lot of classic parts (including the
CA3046,
which I never believed would go out of style! There
are newer
surface-mount differential pairs of course but not quite the same
as the good old CA3046 in a can...) Many of the hobbyist-oriented
retailers still have plenty of old stock though.
What 70's era micros are still in production? Z80, I'm sure. 8088,
probably
(although probably not in an Intel fab.) Anything
else?
I was going to say I thought the Z80 was no longer in production,
although some of the descendants are. However, Zilog still show
several 40-pin DIL and 44-pin PLCC versions as active.
Intel still list a couple of members of the MCS-48 family and sell
modern versions of the 8051 for automotive applicatons. I think MCS-51
is mid-1980s though.
--
Pete Peter Turnbull
Network Manager
University of York