Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA Path: utzoo!linus!philabs!cmcl2!seismo!brl-tgr!internet!God From: God Newsgroups: net.unix-wizards Subject: UNIX and real-time Message-ID: <5660@brl-tgr.ARPA> Date: Thu, 8-Nov-84 13:15:46 EST Article-I.D.: brl-tgr.5660 Posted: Thu Nov 8 13:15:46 1984 Date-Received: Sat, 10-Nov-84 05:34:19 EST Sender: news@brl-tgr.ARPA Organization: Ballistic Research Lab Lines: 19 I concur. I built a real-time portable pulmonary testing lab running on an LSI-11/2 off of only RX02s (with swapping etc). One person would be filling in questionairres while another would be getting a lung test (A/D, ~20KHZ, 14bit.) It worked fine, an occasional hesitation for a few seconds (but with an RX02 as a swap device whoddyaexpect? It was MINI-UNIX/V6. Just requires a smart driver, not terribly unlike one of the psuedo-dma pollers for a DZ11. UNIX being 'bad for real time' is a myth perpetrated by vendors who sell O/S's that are bad for anything else. An even better idea is to go get a rusty old apple or some such, add an A/D board, floppy and parallel board to hook it up to the unix system and use it as an intelligent, programmable A/D device with a 64KB buffer. -Barry Shein Boston University