Xref: utzoo comp.periphs:1121 comp.sys.atari.st:10802 Newsgroups: comp.periphs,comp.sys.atari.st Path: utzoo!henry From: henry@utzoo.uucp (Henry Spencer) Subject: Re: ESDI questions Message-ID: <1988Aug10.165519.20257@utzoo.uucp> Organization: U of Toronto Zoology References: <168@cstw01.UUCP> Date: Wed, 10 Aug 88 16:55:19 GMT In article <168@cstw01.UUCP> meulenbr@cst.UUCP () writes: >1) What exactly is ESDI? ... >2) How does ESDI relate to ST506/ST412? and to SCSI ?? ESDI is sort-of-kind-of an improved ST506/412. It was designed to be a better and faster drive-to-controller interface. Its relationship to ST506/412 is as a (superior) competitor. It is unrelated to SCSI, which is a controller-to-host interface. >3) I know how to interface a disk with a ST506/ST412 or SCSI interface to > the ST. Is it doable to convert ESDI to either of these? Much the same techniques used for 506/412 interfacing should be applicable, I would guess -- I'm not up on the details -- but converting ESDI to 506/412 is probably not practical; they differ too much in details. Converting ESDI to SCSI basically means buying a disk controller that talks ESDI to disks and SCSI to the host; finding such on the commercial market shouldn't be hard, since SCSI is common nowadays and ESDI is increasingly widespread too. -- Intel CPUs are not defective, | Henry Spencer at U of Toronto Zoology they just act that way. | uunet!attcan!utzoo!henry henry@zoo.toronto.edu