And then in the early 90’s (91 or 92) we had ixemul on the Amiga, and EMX on MS-DOS and
OS/2. Although I guess that is too new?
Sent from Mail for Windows 10
From: Clem Cole
Sent: Tuesday, 12 December 2017 10:41 PM
To: The Eunuchs Hysterical Society
Subject: [TUHS] Early Clones / Rewrites for TUHS archives
My question about SOL got me thinking a bit. It would be nice to have section in TUHS of
any early clones that could be collected. The two that I can think of that probably
should be there are (other feel free to point ones that we should try to find):
1.) Idris, which was fairly true to V6 (enough that the one time I test it, things from
pretty much just worked). It was notable from being first. Although the C compiler and
the 'anat' (the assembler) were a tad different. It the system that got Bill
Plauger in trouble @ USENIX @ UDEL when he was booed for a 'marketing' talk.
2.) CRDS (pronounced Cruds by those of use that use it at the time) - Charles River Data
Systems. It was a UNIX-like system, although I do not think really attempted to hold to
a V7 API much more than intent. Although if my memory serves me, one of the unique
features was the use of Reed & Kanodia synchronization in its kernel [REED79], which I
was a always a fan. The system was slow as sin bit it ran on a 68000. [CRUDS system, a
Fortune box and our Vax/750 running BSD4.1 were the systems Masscomp used to bootstrap].
Clem
[REED79] D.P. Reed and R.K. Kanodia, "Synchronization with Eventcounts and
Sequencers"