Path: utzoo!attcan!uunet!clyde.concordia.ca!mcgill-vision!snorkelwacker!spdcc!merk!alliant!linus!nixbur!nixpbe!peun11!josef From: josef@nixpbe.UUCP (Moellers) Newsgroups: comp.periphs.scsi Subject: Re: Adaptec SCSI-ST506 Message-ID: Date: 12 Jul 90 06:23:21 GMT References: Sender: news@nixpbe.UUCP Lines: 22 In marsella@athos.rutgers.edu (Stacy Marsella) writes: >Does anyone know the differences between the various Adaptec SCSI to >ST506 boards? The Adaptecs come in various models, such as the >4000(a), 4010 (advertised as a mac version of the 4000a), and the 4070 >(a rll version). And I just saw an ad mention an ADAPTEC model 5500 >scsi to st506. Precisely how do these models differ? For instance, I >vaguely remember reading that there was something special about Macs >vis-a-vis the scsi standard, but I have no idea how/why this might >relate to there being a special adaptec board. As far as I remember having read in the 4000A's manual, the Mac seems to have an odd block size, something like 576 bytes, but defeinitely nothing like a power of 2. The 4000A apparently has a special jumper to cater for Macs. -- | Josef Moellers | c/o Nixdorf Computer AG | | USA: mollers.pad@nixbur.uucp | Abt. PXD-S14 | | !USA: mollers.pad@nixpbe.uucp | Heinz-Nixdorf-Ring | | Phone: (+49) 5251 104662 | D-4790 Paderborn |