Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site asgb.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!bmcg!asgb!devine From: devine@asgb.UUCP (Robert J. Devine) Newsgroups: net.arch Subject: Re: Definitions of SASI/SCSI? Message-ID: <643@asgb.UUCP> Date: Wed, 27-Feb-85 10:18:16 EST Article-I.D.: asgb.643 Posted: Wed Feb 27 10:18:16 1985 Date-Received: Sat, 2-Mar-85 02:52:08 EST References: <752@ecsvax.UUCP> Organization: Burroughs Corp. ASG, Boulder Colo. Lines: 20 > We've had some interesting articles on the disk controllers, but > I haven't seen the definitions of these acronyms. Please, somebody. > --henry schaffer SCSI stands for "Small Computer System Interface". It is an enhancement of SASI (Shugart Associates Systems Interface). I don't believe that SCSI has been accepted as a standard by ANSI yet. The organizations behind SCSI are Shugart and NCR. Does anybody know of others? SASI was first done as a cpu to small disk interface -- suitable for a single user, small system. SCSI expanded SASI to include support for many different types of devices. These devices must be somewhat "smarter"; the cpu won't guide its every operation. A SCSI command is given to the device and the device does it, relinguishing control of the bus if the operation takes a long time. There have been a number of articles on SCSI recently. Check 'em out. Bob Devine