[t13] SCSI ATA f/w revision bytes how many

Peter Johansson PJohansson at acm.org
Mon May 24 16:38:50 PDT 2004


* From the T10 Reflector (t10 at t10.org), posted by:
* Peter Johansson <PJohansson at ACM.org>
*
At 03:04 PM 5/24/2004 -0600, Pat LaVarre wrote:

>Have to fit in 12 bytes - or was that 16 - to make SCSI over FireWire 
>traces look normal.

Say again, Pat? Are you referring to some SBP logic analyzers that don't 
display large CDBs correctly? The transport protocol itself has always 
allowed arbitrarily large CDBs; this was true in SBP-2 and we added an 
informative note in SBP-3 to dispel any confusion.

PS If any logic analyzers choke on larger CDBs, the cut-off point, for 
historical reasons, is likely to be 12 bytes.


Regards,

Peter Johansson

Congruent Software, Inc.
98 Colorado Avenue
Berkeley, CA  94707

(510) 527-3926
(510) 527-3856 FAX

PJohansson at ACM.org 

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