HP Q153090901 User Manual
Page 151
REQUEST SENSE 03h
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BPV
Bit Pointer Valid
0 The Bit Pointer field is invalid.
1 The Bit Pointer field is valid. If the SKSV bit is set then the BPV bit must be set
as well.
Bit Pointer
Identifies the bit position of the field in error, whether it is a command descriptor or
a command parameter list field. When a multi-bit field is in error, this will point to
the most significant bit of that field. Only valid when the SKSV flag is set.
Field Pointer
/Drive Error Code
If SKSV = 1
, the interpretation of this field depends on the sense key reported.
For Sense Key = 5 (ILLEGAL REQUEST), this field represents the Field Pointer,
identifying in which byte of the command descriptor or parameter list an error was
detected.
Note that the drive scans from byte 0 bit 7 of a command or parameter list through
to byte n bit 0. The field and bit pointers are set to point to the most significant bit of
the field that is in error. See the illegal field check and the parameter list check.
For Sense Key = 0 (NO SENSE) or 2 (NOT READY), this field represents the Progress
Indication, where the returned value is a numerator that has 65536 (10000h) as its
denominator. This reflects the progress being made through the total operation
If SKSV = 0
, this field represents the Drive Error Code. The top byte of this field will
be zero. The bottom byte contains the drive error code associated with the failure of
the previous command, or zero in the case of no failure and no appropriate error
code. If the drive’s power-on self-test failed then, in the absence of an error code
associated with the most recent command, this byte will be set to the error code
generated by the failing test.
NOTE:
Drive error codes are provided for information only; they are intended to
assist in product integration and fault diagnosis. The codes should not be relied on
by “generic” host drivers, since these are specific to the product. For a list of codes,
see
Chapter 10 of the Hardware Integration Guide, Volume 1 of the HP
Ultrium Technical Reference Manual
.
CLN
0
1
The drive is OK.
The drive requires cleaning. The front panel LEDs will be displaying a “clean
me” sequence or message. This bit is cleared to zero after a cleaning
cartridge has been used.