Inconsistency between MMC-4, MMC-5, and MMC-6 on READ (12) opcode

John Lohmeyer lohmeyer at
Mon Mar 3 15:52:30 PST 2014

* From the T10 Reflector (t10 at, posted by:
* John Lohmeyer <lohmeyer at>
I have added an agenda item to the CAP working group to consider what should
be done about an inconsistency between the READ (12) operation code in:
  Standard READ (12)
  MMC-4    28h
  MMC-5    A8h
  MMC-6    A8h
I would welcome opinions on how we should address this issue. Z JAN from
China says MMC-4 is correct and the other standards are in error.
John Lohmeyer		       Email: lohmeyer at
LSI Corp.		       Voice: +1-719-533-7560
4420 ArrowsWest Dr.		Cell: +1-719-338-1642
Colo Spgs, CO 80907
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