1 Oct
2002
1 Oct
'02
3:11 a.m.
--- "J.C. Wren" <jcwren(a)jcwren.com> wrote:
You can pick up the RCA Studio II on eBay pretty
cheap.
Didn't someone on this list have "somewhere" an article or set of
docs for converting a Studio II to an Elf-like computer? I got
a Studio II from a buddy of mine. If there aren't any schematics
out there, I could start with his - he annotated the entire inside
of his unit.
Expect to pay dearly for databooks...
Guess I was lucky enough to grab mine when they were current or
just falling out of favor. I have a stack (not as large as
what Joe recently sold) from 15-20 years ago that cost me cover
price ($5) or free. What I _don't_ have that was appealing in
that auction is the stack of newsletters. There can be some
amazing stuff from those days - people who owned single-board
computers were natural tinkerers, the kind that fell from prominence
with the release of consumer friendly machines like the PET and
the TRS-80 Model I and the Apple II. Not to say that those newer
owners were never tinkerers, but getting your mom's permission
to modify a $1,000 machine vs a $200 machine... well... the 1802
and other SBCs were easier to experiment with.
> It was one of the first relatively
"rad-hard" micros from
> what I remember reading, due in large part to its CMOS
> construction. I guess those days there were a few PMOS
> CPUs (8008, 8080) and a few NMOS CPUs (Z80, 6502, 9900JL),
> and exactly one CMOS CPU -- the CDP1802. So it was
> 1802 or bust. :)
The other CMOS chip at the time was the PDP-8 on a
chip.
Right... the Intersil 6100, and later, the 6120. Available in the
mid-1970s in the Intercept Jr. and a few other forms (not including
the WT-78 word processor, etc.)
-ethan
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