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From: dougp@ico.isc.com (Doug Pintar)
Newsgroups: comp.periphs.scsi,comp.sys.ibm.pc,comp.unix.xenix,comp.unix.i386
Subject: Re: Adaptec 154xB SCSI host adapter (was: Re: WD SCSI Controller)
Message-ID: <1990May7.211407.6954@ico.isc.com>
Date: 7 May 90 21:14:07 GMT
References: <1922@lakesys.lakesys.com> <3906@thebes.Thalatta.COM> <1990May5.203455.16809@clmqt.marquette.Mi.US> <1990May6.135921.13129@cti-software.nl>
Reply-To: dougp@ico.ISC.COM (Doug Pintar)
Organization: Interactive Systems Corp., Boulder CO
Lines: 15

In article <1990May6.135921.13129@cti-software.nl> pim@cti-software.nl (Pim Zandbergen) writes:
>New Adaptec 154xB ? Could anybody shed some light over this?
>What is different from the A model? How compatible is it?

I have one, and it's very similar from a programming standpoint, so the
existing 386/ix HPDD driver works just fine.  It has some additional
programmability as to speeds when doing its first-party DMA, and you can
get more information (like who's negotiated synchronous transfers) from
it.  The board is half-long, and may be a bit faster.  It also supports
both target and initiator modes, so you could use SCSI to connect two
systems (386/ix, however, does not support this).  It's a nice board;
I have no idea as to how available it is, however.  I got mine from Adaptec
to make sure the new firmware/bios/hardware all worked with 386/ix.

Doug Pintar