Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!agate!ucbvax!tut.cis.ohio-state.edu!rutgers!att!mtuxo!mtgzz!drutx!druwy!dlm
From: dlm@druwy.ATT.COM (Dan Moore)
Newsgroups: comp.os.minix
Subject: Re: MINIX
Message-ID: <3937@druwy.ATT.COM>
Date: 27 Mar 89 16:33:47 GMT
References: <11509@louie.udel.EDU>
Organization: AT&T, Denver, CO
Lines: 16

in article <11509@louie.udel.EDU>, eichert%uservx.decnet@ddnvx2.afwl.af.mil (USERVX::EICHERT) says:
> 	At one time I saw a mention from someone else here about problems with
> another 277N drive system.  So perchance there is some pecularity with the 277N.I'm running an ICD host adapter also by the way.

	Seagate 277Ns are slow.  If the SCSI driver code tries to talk
to them too quickly (ie. as fast as it can) the 277N will drop one or
more SCSI commands.  In order to get the 277N to work reliably there
needs to be a short delay between each SCSI command, Atari's SCSI
drivers wait several (2 or 3) ticks of the 200 HZ clock between each
access.


				Dan Moore
				AT&T Bell Labs
				Denver
				dlm@druwy.ATT.COM