[TUHS] First Unix-like OSes not derived from AT&T code?
James Frew
frew at ucsb.edu
Wed May 11 02:42:01 AEST 2022
In the early '80s UC Santa Barbara had a general assignment teaching lab
full of IBM PC/ATs (i.e. 286s). We convinced the the powers-that-be to
let us run Xenix on them for a remote sensing class, which meant we
could port an image processing system I'd written under v6 (PDP-11/45)
to an actual classroom. Xenix must have been v7 or pretty close, since
the port was painless. (The display driver was a bit harder---it was
(gasp!) 8-bits deep, first display I didn't have to dither on, but it
wasn't memory-mapped, so you had to shovel pixels into it a byte a time.
Made for nice dramatic slow reveals...)
Thanks for the memories!
/James Frew
P.S.: Hardware brevis, software longa: https://github.com/USDA-ARS-NWRC/ipw
On 2022-05-10 09:08, Warner Losh wrote:
>
> Microsoft's Xenix was also in this time frame, but wasn't marketed by
> IBM (and its earliest version in 1982 predate Venix, but were only for
> Intel's System 86 machines, and may have required an Intel MMU board
> (the quick research I did was unclear on this point, other than it was
> supported).
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