From mboxrd@z Thu Jan 1 00:00:00 1970 From: wes.parish@paradise.net.nz (Wesley Parish) Date: Thu, 20 Apr 2017 19:32:20 +1200 (NZST) Subject: [TUHS] Zilog Z80 Unix In-Reply-To: <1492671828.58f85d549cfc5@www.paradise.net.nz> References: <19663.1492652562@cesium.clock.org> <20170420030913.A3CDF124AEAA@mail.bitblocks.com> <20170420043410.815CC124AEAD@mail.bitblocks.com> <1492671828.58f85d549cfc5@www.paradise.net.nz> Message-ID: <1492673540.58f86404060e8@www.paradise.net.nz> This is a timeline of microcomputer Unix: https://www.landley.net/history/mirror/robotwisdom/nonnix.html Quoting Wesley Parish : > FWIW, it appears to be here: > http://www.autometer.de/unix4fun/z80pack/ftp/cromemco/ > "cromix1127.tgz Cromix 11.27 > cromix_work.tgz Cromix 11.27 with C compiler installed, Cromemco ed > replaced > with ANSI version, WordMaster installed. Ready to use work" > > Wesley Parish > > Quoting Bakul Shah : > > > Yes, Cromemco was the company, Cromix their unix like OS. > > > > IIRC, in 1981-83 timeframe someone I worked with had mentioned > > he used to work at Cromemco and that they had a unix like OS > > called Cromix. Cromemco were in Mountain View so likely they > > were at the WCCF. > > > > Even though z80 could only address 64k, their system had a > > bank select under s/w control & upto 512K of RAM could be > > added. Z80 didn't have a supervisor mode but still, the bank > > select must have afforded enouh protection from bad pointers > > crashing random processes. > > > > On Wed, 19 Apr 2017 23:40:30 EDT Gregg Levine > > > wrote: > > > Hello! > > > That was also a board vendor. FYI: The first GASP [GetAway Special > > > Program] a Space Shuttle payload made use of such a board. > > > ----- > > > Gregg C Levine gregg.drwho8 at gmail.com > > > "This signature fought the Time Wars, time and again." > > > > > > > > > On Wed, Apr 19, 2017 at 11:09 PM, Bakul Shah > > wrote: > > > > On Wed, 19 Apr 2017 18:42:42 PDT "Erik E. Fair" > > 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. > > > > > > "I have supposed that he who buys a Method means to learn it." - > Ferdinand Sor, > Method for Guitar > > "A verbal contract isn't worth the paper it's written on." -- Samuel > Goldwyn > "I have supposed that he who buys a Method means to learn it." - Ferdinand Sor, Method for Guitar "A verbal contract isn't worth the paper it's written on." -- Samuel Goldwyn