Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!olivea!mintaka!bloom-beacon!eru!hagbard!sunic!mcsun!ukc!mucs!p4.cs.man.ac.uk!gilbertd From: gilbertd@p4.cs.man.ac.uk (Dave Gilbert) Newsgroups: comp.sys.acorn Subject: Re: Slow floppy drives Message-ID: Date: 10 Jun 91 07:46:46 GMT Article-I.D.: p4.gilbertd.676540006 References: <953@mrcu> Sender: news@cs.man.ac.uk Distribution: eunet Lines: 22 In <953@mrcu> yc58@mrcu (MRC Library) writes: >A mate of mine is trying to get a very old 5/quarter drive working on the >Arc but he thinks it needs a much longer step time than 12 ms. Is it possible >to get the Arc to do this (say 24 ms) or is 12 ms the longest the controller >allows? I doubt that it is possible. It sounds like the problem which used to occur on the Master computers - they had the 1772 controller like the arc - and there is the slowest step time of 12ms - I do seem to remember a version of the DFS which was suppost to cure it - but I think the chances of finding such a piece of software are remote. I know about this problem because we tried to get our old 5.25" drives going with our master when we got it a few years ago - we ended up buying faster drives! Dave -- ------------------------------------------------------------------------------- - Dave Gilbert - gilbertd@p4.cs.man.ac.uk - The MTBF of a piece of equipment - - G7FHJ@GB7NWP - is inversly proportional to its - ------------------------------------------- importance -