qpc field of CIP in SBP-2

Rob Lash rlash at QNTM.COM
Thu Jun 26 09:47:56 PDT 1997

* From the SCSI Reflector (scsi at symbios.com), posted by:
* Rob Lash <rlash at qntm.com>
<Stephen_Finch/SSI1.SSI1 at notes-gw.tus.ssi1.com> asks:

> I think I understand the purpose of qpc.  My question is:
> Are the quadlets that are logically added to the application-dependent 
> data block to make it equal to the value obtained by multiplying dbs by 
> the value of 2 raised to the fn actually sent on in the isoc packet?
> Okay everyone, does anyone out there understand my question?


The padding quadlets are transmitted in the isochronous packet which 
contains the last source-packet-data-block (2^fn)-1 

There is a helpful note in the SBP-2 rev 2d draft following Figure 65
illustrating how this source-packet-data-block may be located.


  Rob Lash
  Sr. Firmware Engineer                  email: rlash at qntm.com
  Advanced Development                   voice: 408.894.4228
  Quantum Corporation                    fax:   408.894.5653
  500 McCarthy Blvd                     
  Milpitas, CA 95035                     http://www.quantum.com
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