Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!uunet!mcsun!ukc!mucs!p4.cs.man.ac.uk!truemanc From: truemanc@p4.cs.man.ac.uk (Chris Trueman) Newsgroups: comp.sys.acorn Subject: Help on low level read/write to floppy Message-ID: Date: 5 Mar 91 13:36:40 GMT Sender: news@cs.man.ac.uk Lines: 13 In one of the labs on my course we have read/written to an ATARI disc sector by sector, track by track. What I want to do is the same on the ARC - can anyone help with the necessary OS calls I need. I have head you can use SWI "FileCore_DiscOp" with R0 as an operation code and other registers set up either pointing at data blocks or containing information - is this right?? Thanks in advance, Chris: truemanc@uk.ac.man.cs.p4