February 24, 1989


The SCSI-2 CAM (Common Access Method) Committee of February 22 was held at the 
Wyndham South in Austin. The following attendees were present: 

 M. Aarons         EMULEX                  S. Nester     SMS 
 D. Allan          ENDL                    J. Polonsky   SMS 
 D. Anderson       SUN MICROSYSTEMS        T. Putnam     OPTOTECH 
 J. Armstrong      NCR                     T. Reichert   INTERACTIVE SYSTEMS 
 C. Ballard        BALLARD SYNERGY         R. Reid       SMS 
 B. Bonner         WESTERN DIGITAL         C. Rhea       AT&T 
 F. Burgess        SEAGATE                 L. Robinson   STORAGE DIMENSIONS 
 R. Chuin-Jon Lin  SONY                    J. Semenak    AT&T 
 E. Dilks          TANDON                  S. Shah       WESTERN DIGITAL 
 L. Edwards        VERBATIM                A. Sklaroff   QUANTUM 
 M. Evans          SYTRON                  G. Slaughter  SUN MICROSYSTEMS 
 M. Jerbic         HEWLETT PACKARD         S. Smyers     AMD 
 D. Johnson        COLUMBIA DATA           R. Snively    ADAPTEC 
 J. Katzung        APPLE                   G. Stephens   IBM 
 L. Lamers         MAXTOR                  R. Tewell     COLUMBIA DATA 
 J. Lohmeyer       NCR                     T. Treadway   DPT 
 G. Marazas        IBM                     D. Trupski    OLIVETTI 
 D. McDonald       DILOG                   N. Uyehara    ZENITH 
 J. McGrath        QUANTUM                 S. Washburn   ARCHIVE 
 T. Murray         NCR                     J. Zilinski   NEC IS 

At the last meeting the following diagram was used to represent the structure 
of the layers within the CAM. 

 +-----------------------+ 
 | OSD Driver            |   OSDCB  Operating System Dependent Control Block 
 +-----------------------+ 
 | Transport Module      |   TCB  Transport Control Block 
 +-----------------------+ 
 | SCSI Interface Module |   CCB  CAM Control Block 
 +-----------------------+ 
 | Protocol Hardware     |   CDB  Command Descriptor Block
 +-----------------------+ 

Dal Allan suggested the Transport module is the correct place to include a 
routing capability for truncated CCBs which contain generic requests that are 
not SCSI-specific. The reaction dominated the morning discussion. Much of the 
concern expressed was based on a misunderstanding that suppliers of CAM-
compliant software and microcode would have to support interfaces other than 
SCSI, and provide generic to specific interface translation.

Rick Tewell volunteered to prepare a document which described the routing 
function and actions required of a Transport Module, and asked that anyone 
with ideas on the subject either call him at 407-869-6700 or leave a message 
on the SCSI BBS (316-636-8700). 

The meeting progressed much better when the discussion moved away from 
philosophical debate and on to technical issues: 

Once the concept behind Shishir's initialization procedure was understood 
there was general enthusiasm for adopting it. Bob's proposal on the handling 
of target functions was also accepted. 

Judy and Fred are to prepare another revision of their submittals based on 
constructive criticism of their CHS and DOS OSD proposals respectively. 

Improptu presentations were also made: 

 Greg Slaughter: Resource allocation issues 
 Jim McGrath:    Justification for working group on embedded bus extensions
 Clint Ballard:  Alternative diagram of interaction between CAM layers

Assigned Activities (* = Proposal Accepted)

 *Target Functions    Bob Snively         Apple II OSD   Jerry Katzung 
 *Initialization      Shishir Shah        DOS OSD        Ron Perry     
  Queueing            Jim McGrath         Mac OSD        Jerry Katzung 
  CHS Algorithm       Judy Polonsky       Novell OSD     Lance Robinson
  Working Document    Dal Allan           OS/2 OSD       Tracy Murray  
  Transport Module    Rick Tewell         Unix OSD       Todd Reichert 
                                                   
Quantum is hosting the next meeting of the CAM Committee on March 8 at the 
Sheraton Silicon Valley East in Milpitas (408-943-0600). Room rates are $80. 
When making reservations, mention QUANTUM/ANSI/CAM. 

Tracy Murray will be holding a pre-meeting on the OS/2 OSD on March 7. Watch 
the SCSI BBS (316-636-8700) for details on when and where. 

Jim McGrath will be holding a post-meeting on AT-bus extensions for CAM on 
March 9 at the Quantum facility next door to the Sheraton. 

Future Meetings: 
  3/ 8/89   Milpitas       Sheraton Silicon Valley East       408-943-0600
  4/26/89   St Petersburg  Tradewinds Hotel                   813-367-6461
  5/10/89   Wichita        Hilton Hotel         
  6/21/89   San Jose       Red Lion Hotel 





                                                  I. Dal Allan
                                                  Chairman