Sony CDU-541 - Page 29

CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
The product identification field contains sixteen bytes of ASCII data
defined as follows:
Byte
ASCII
Code
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
CDR 0 M sp C DUx x x x sp
43h 44h 2Dh 52h 4Fh 4Dh 20h 43h 44h 55h 2Dh 3xh 3xh 3xh 3xh 20h
The product revision level field contains four bytes of ASCII data which
indicate the revision level of the controller firmware defined as follows:
Byte
ASCII
Code
32 33 34 35
x x X
3xh 2Eh 3xh 6Th
X - is lower case letter indicating reV1S10n
Y
- is corresponding hex code for letter
Byte 32 - A value of three indicates that this is a production release of
the firmware. A value of two indicates a beta test version of the firmware.
A value of one indicates an Engineering development version of the firmware.
Byte 33 - is a period.
Byte 34 This byte indicates major reV1S1ons of. or additions to the
firmware. The value of this byte is from zero to nine. This always implies a
change
in the implementation documentation.
Byte 35 - This byte indicates minor changes to the firmware. i.e. bug fixes.
corrections for misunderstandings, etc. There is usually no change required.
or very minor change in the implementation document.
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