X3T9.2/90-035




March 1, 1990

Mr. Philip Joslin
Photomatrix Corporation
325 East Elliot Road, Suite 34
Chandler, AZ 85225-1129

Subject: Response to BSR X3.131-198x (SCSI-2) Public Review Comment #2

Dear Mr. Joslin,

Thank you for your interest in the SCSI-2 draft proposed standard.  The X3T9.2 
committee has reviewed your public review comment (X3T9.2/89-158) suggesting 
several changes to the Scanner Command Set to accommodate your Photomatrix 
Aperture Card Scanner product.  Many of your ideas have merit, however the 
Aperture Card Scanner does not fit the Scanner Device model in SCSI-2, which 
was principally developed for page scanners.  As such, X3T9.2 does not feel it 
is appropriate to incorporate the changes in SCSI-2.

The X3T9.2 committee has recently begun working on SCSI-3.  We would like to 
encourage you to participate in this project.  It may be possible to enhance 
the Scanner Device model in SCSI-3 to include such devices as your Aperture 
Card Scanner.  Also, some of the changes you suggested may be useful for next 
generation page scanners.

If you need more information concerning participating in X3T9.2, please 
contact John Lohmeyer, X3T9.2 chairman, at 316-636-8703.

In the meantime, X3T9.2 recommends that you use the SCSI-2 command set with 
appropriate vendor-specific extensions where necessary.

Please send a written statement to the X3 Secretariat (Attn: Lynn Barra) 
within fifteen working days saying whether you accept or reject this response.  
If you do not respond within fifteen working days, the Secretariat will assume 
that you have withdrawn the comment.

Sincerely Yours,


Del Shoemaker, X3T9 Chairman

cc: L. Barra, X3 Secretariat
    J. Lohmeyer, X3T9.2 Chairman
    J. Ryland, SPARC Liaison