Removing 32-bit from SPI-3

Gary Watson gary at trimm.co.uk
Tue Sep 22 01:23:36 PDT 1998


* From the T10 (formerly SCSI) Reflector (t10 at symbios.com), posted by:
* Gary Watson <gary at trimm.co.uk>
*

Jim,
As far as I am aware, in 7 years of Trimm doing SCSI enclosures we have 
never had a single request to package a 32 bit SCSI version.  Seems to me, 
it's just excess baggage in the spec.

Gary Watson			Trimm Technologies Ltd.
Engineering Manager		A Subsidiary of Robroy Industries, Inc.
gary at trimm.co.uk		Nottingham NG8 6AR  ENGLAND
http://www.trimm.co.uk		+44 115 951 9951


-----Original Message-----
From:	Jim McGrath [SMTP:Jim.McGrath at quantum.com]
Sent:	21 September 1998 18:21
To:	'relliott at hobbit.eng.hou.compaq.com'; t10 at Symbios.COM
Subject:	RE: Removing 32-bit from SPI-3

* From the T10 (formerly SCSI) Reflector (t10 at symbios.com), posted by:
* Jim McGrath <Jim.McGrath at quantum.com>
*
Rob,

Bravo!  As someone who had to handle 32 bit in a proposal recently, I would
also like to get rid of it.  The CURRENT 32 bit, with two cables and
completely independent buses, seems way outdated (does ANYONE plan on new
products using this technology?)  If anyone has a single 32 bit bus prop  
osal
to bring forward, that might be interesting, but is no reason to keep the
current 32 bit provisions around today.

Jim


> -----Original Message-----
> From:	relliott at hobbit.eng.hou.compaq.com
> [SMTP:relliott at hobbit.eng.hou.compaq.com]
> Sent:	Monday, September 21, 1998 9:15 AM
> To:	t10 at Symbios.COM
> Subject:	Removing 32-bit from SPI-3
>
> * From the T10 (formerly SCSI) Reflector (t10 at symbios.com), posted by:
> * relliott at hobbit.eng.hou.compaq.com (Robert Elliott)
> *
> In recent SPI-3 working group meetings the idea of removing 32-bit
> support from SPI-3 has been mentioned many times, but no proposal
> to do so has been made.  Nobody implements 32-bit SCSI and it adds
> complexity to the specification.
>
> I propose we instruct the SPI-3 editor to remove all references
> to 32-bit support.  Removing it would involve elimination of
> references to:
>     32-bit data
>     Q Cable
>     Secondary bus
>     DB[31:16] and DBP[3:2] signals
>     REQQ and ACKQ signals
>
> --
> Rob Elliott      UNIX mailto:relliott at hobbit.eng.hou.compaq.com
> Houston, TX        PC mailto:Robert.Elliott at compaq.com
> *
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