20 Apr
2017
20 Apr
'17
9:09 a.m.
On Wed, 19 Apr 2017 18:42:42 PDT "Erik E. Fair" <fair-tuhs(a)netbsd.org>
wrote:
I have a memory of having seen a Zilog Z-80 (not Z8002
like the Onyx) based =
Unix, possibly v6, at a vendor show or conference - perhaps the West Coast =
Computer Faire (WCCF) in the late 1970s or early 1980s.
I recall asking the people in the booth how they managed without an MMU, and
don't recall their answer. I do remember thinking that since Unix had "grown
up" with MMUs to stomp on obvious pointer mistakes, the software ought to be
relatively well-behaved ... you know: not trying to play "core war" with =
itself?
I searched the TUHS archives cursorily with Google to see if this has been
previously mentioned, but pretty much all Z80 CPU references have for its use
in "smart" I/O devices back in the day.
Does anyone else remember this Z80 Unix and who did it? Or maybe that it was
a clone of some kind ... ?
looking for a little history,
Erik Fair
You may be thinking of Cromemco.