Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!info-atari From: nep.pgelhausen@AMES-VMSB.ARPA Newsgroups: net.micro.atari Subject: --- Density --- Message-ID: <8602190116.AA00406@ucbvax.berkeley.edu> Date: Tue, 18-Feb-86 20:09:00 EST Article-I.D.: ucbvax.8602190116.AA00406 Posted: Tue Feb 18 20:09:00 1986 Date-Received: Fri, 21-Feb-86 04:14:40 EST Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: nep.pgelhausen@ames-vmsb.ARPA Organization: The ARPA Internet Lines: 21 In a reply to a recent query about disk densities, Rob Botwin said that the PERCOM density command format was copied by everyone including Atari. Sorry to say, from what I understand, Atari is the ONLY company making disk drives for the Atari which does NOT follow this standard. This is definately true for the 810. I cannot vouch for the 1050, but as far as I know it also is 'dumb' as far as density settings. It can read single density format disks, but unless upgraded, it cannot read or write true double density. Nor can you use the PERCOM commands to ask it it's current density or reset it. I assume that the "read the first sector" method that David suggested was meant for 1050 disk drives. (NOTE: David Young, (sorry)). If I am misteaken in any of these statements or beliefs, please someone, correct me. -Richard Hartman max.hartman@ames-vmsb ------