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From: neese@adaptx1.UUCP
Newsgroups: comp.periphs.scsi
Subject: Re: Adaptec SCSI 2 Support
Message-ID: <283400156@adaptx1>
Date: 20 Jun 91 07:37:46 GMT
References: <31579@hydra.gatech.EDU>
Lines: 27
Nf-ID: #R:hydra.gatech.EDU:31579:adaptx1:283400156:000:1452
Nf-From: adaptx1.UUCP!neese    Jun 19 18:07:00 1991


>/* ---------- "Re: Adaptec SCSI 2 Support" ---------- */
>In your message you state that the 1740 HBA supports tagged commands in enhanced
>mode. Do the 1740 UNIX drivers support this enhanced mode currently? Is this
>the 1540 ASW software you mention? Specifically what version of the drivers
>offer this support ver ###? Under UNIX is their a programmers interface to send
>scsi commands directly to a device - is this the software you wrote which is
>often mentioned on the net? How does one obtain these programs - does it come
>with the HBA?
>STUFF DELETED<

All 1740 enhanced mode drivers we are involved with contain support for
tag queuing.  The problem you will have is finding a drive that properly
supports tag queuing.  I believe HP has 1 and Imprimis/Seagate has one.
These are the only tag queuing drives I have seen and know to work.
The 1540 does not support tag queuing.
As far as an interface in any UNIX driver to allow a utility to pass commands
to the hardware.  This is best addressed to the UNIX folks (SCO, ISC,..).
If they have such a beast, it would be implemented differently between them.
The software I have written is simple utilities for doing things with SCSI
devices most folks can't get at.  All of my stuff is available from many
places, but from me, either by Email or anon uucp.

			Roy Neese
			Adaptec Senior SCSI Applications Engineer
			UUCP @  neese@adaptex
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