SCSI-3 Block Commands (SBC)
jlohmeye at ncr-mpd.FtCollinsCO.NCR.COM
Thu Aug 11 11:29:08 PDT 1994
"Gene Milligan wrote:"
> No to both. SBC is the command set for Direct Access Devices with a SAManized
> name to confuse implementors. Special requirements for optical devices not
> fitting the desired behavior of Direct Access Devices should be moved to
> Multimedia Commands (MMC).
The SCSI-3 Multimedia Commands (MMC) project was defined to only pull CD-ROM
devices out of the SBC project. I believe that Write-Once and Optical Memory
Devices were to remain in SBC. Quoting from 93-178 (the MMC project proposal):
"2.2 Recommended Scope of Standard or Technical Report
The SCSI-3 Multimedia Commands standard is intended to provide,
in conjunction with the SCSI-3 Primary Commands (SPC), a
complete set of commands for CD devices, while maintaining a
high degree of compatibility with SCSI-2 compliant CD-ROM
Functions which will be considered for incorporation include:
a) Pertinent functions from the SCSI-2 CD-ROM command set.
b) New commands and features to support the new CD functions
c) Other capabilities which fit within the general scope of
implementing the SCSI-3 Multimedia Commands on a broad
range of applications, and other capabilities that may be
proposed during the development phase by the participants
in the project."
John Lohmeyer E-Mail: John.Lohmeyer at FtCollinsCO.NCR.COM
NCR Microelectronics Voice: 719-573-3362
1635 Aeroplaza Dr. Fax: 719-597-8225
Colo Spgs, CO 80916 SCSI BBS: 719-574-0424 300--14400 baud
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