Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 +MMDF+MULTI+2.11; site icdoc.UUCP Path: utzoo!linus!philabs!prls!amdimage!amdcad!amd!vecpyr!lll-crg!seismo!mcvax!ukc!icdoc!iwm From: iwm@icdoc.UUCP (Ian Moor) Newsgroups: net.arch Subject: Re: Inertia in machines Message-ID: <233@ivax.icdoc.UUCP> Date: Thu, 15-Aug-85 18:31:04 EDT Article-I.D.: ivax.233 Posted: Thu Aug 15 18:31:04 1985 Date-Received: Tue, 20-Aug-85 06:29:21 EDT References: <2264@amdcad.UUCP> <> <1601@amd.UUCP> Reply-To: iwm@icdoc.UUCP (Ian Moor) Organization: Dept. of Computing, Imperial College, London, UK. Lines: 15 Xpath: icdoc ivax One of the people who worked on the MU5 at Manchester told me that the "find first bit set" instruction which worked on a bit vector sometimes overshot if there was a long set of 0's, trouble was that the disk block allocation was done with 1's to mark free blocks, on a full disk somebody's block might just vanish. -- Ian W Moor The squire on the hippopotamus is equal Department of Computing to the sons of the other two squires. Imperial College. 180 Queensgate London SW7 Uk.