Date: Wed, 24 Jan 1996 05:19:39 -0500 (EST) From: Peter Dufault <dufault@hda.com> To: joerg_wunsch@uriah.heep.sax.de Cc: msmith@atrad.adelaide.edu.au, lmcsato@lmc.ericsson.se, freebsd@enteract.com, questions@FreeBSD.org, scsi@FreeBSD.org Subject: Re: Adaptic 1522 DAT Phase Errors Message-ID: <199601241019.FAA00342@hda.com> In-Reply-To: <199601240849.JAA09895@uriah.heep.sax.de> from "J Wunsch" at Jan 24, 96 09:49:23 am
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> > As Michael Smith wrote: > > > > PIO SCSI controllers like the 1522 are a Bad Idea in general. Get a > > busmaster (1542). > > Note that all 154X B's are known to work, while some very old A's are > reported to cause troubles. Mine works however, and i know of at > least one more 1542A that does also work fine under FreeBSD. For > large transfers, the performance isn't worse than that of a 1542B. > > The 154X driver in FreeBSD is probably one of the most solid SCSI > drivers around in the system. Note that in addition to Julian's work this is due to the quality of Adaptec's sequencer code. Not to cast aspersions on our sequencer hackers, but "Damn you Adaptec!" for forcing us to write sequencer code. They don't deserve the hard work that Justin has done enabling them to sell a batch of cards into the FreeBSD (and Linux) market. -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267
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