Xref: utzoo comp.unix.xenix:2205 comp.unix.microport:611 comp.periphs:930 Checksum: 04521 Path: utzoo!utgpu!romwa From: romwa@gpu.utcs.toronto.edu (Mark Dornfeld) Date: Mon, 9-May-88 12:38:40 EDT Message-ID: <1988May9.123840.19368@gpu.utcs.toronto.edu> Organization: University of Toronto Computing Services Newsgroups: comp.unix.xenix,comp.unix.microport,comp.periphs Subject: Re: Thoughts needed References: <4144@orstcs.CS.ORST.EDU> <224@obie.UUCP> Reply-To: romwa@gpu.utcs.UUCP (Mark Dornfeld) Keywords: Compaq xenix microport multi-user multiport In article <224@obie.UUCP> wes@obie.UUCP (Barnacle Wes) writes: >In article <4144@orstcs.CS.ORST.EDU>, kean@mist.cs.orst.edu (Kean Stump) writes: >> >> I need recommendations for a multi-user multi-tasking os that will run >> on the following equipment: >> >> I have a Compaq 386/20 with 5 meg ram > [ all sorts of goodies deleted ] >> >> I'm also considering Concurrent-Dos and PC-MOS/386 as runners-up. >> One of the major requirements is that real-time sampling on the order >> of 10K samples/sec (~40 bytes/sample) needs to be possible (the Compaq >> will spend some time on a chunk of ice in the Arctic next spring >> collecting data from a variety of instruments dropped through a hole in >> the ice) and a good C and FORTRAN (8-<) compiler are needed. > >Hmmm... Have you carefully though this out? A Unix (or unix-like) >system is probably not your best bet for doing data acquisition on. >Unix was designed from the beginning to be a time-share system, not a >real-time system. QNX is is billed as a real-time OS. It is Unix-like, multiuser but can handle the kind of thing you require. I do not have the reference handy, but mail to me and I'll look it up. Or have a look in some recent issues of Byte or PC Tech Journal; they usually advertise in there. I believe that Venix, a System V port sold by VenturCom is supposed to have some real-time capabilities. VenturCom, 215 First Street Cambridge, MA 02142 (617) 661-1230 Both of these systems will run on an 8088/6 PC. Mark T. Dornfeld Royal Ontario Museum 100 Queens Park Toronto, Ontario, CANADA M5S 2C6 mark@utgpu!rom - or - romwa@utgpu