Quantum DLT 4700, Product Manual

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DLT4000 SCSI Interface
DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem 8-31
LOG SELECT PAGE FORMAT
Each Log page will begin with a 4-byte header followed by n number of log parameter
blocks (one block for each parameter code). Each block, except for parameter code
05h, will be 8 bytes. The parameter block for code 05h will be 12 bytes.
Log Page Header
Bit
7 6 5 4 3 2 1 0
0 Reserved Page Code
Byte 1 Reserved
2
(MSB)
Page Code
3
(LSB)
Log Parameters
0
(MSB)
Parameter Code
1
(LSB)
2 DU DS TSD ETC TMC Rsvd LP
3 Parameter Length
Byte 4
(MSB)
5 Parameter Value
6
7
(LSB)
Figure 8-15 Read/Write Error Log Select Page Format
Page Code
The Page Code specifies what Log Page this LOG SELECT command is for.
Page Length
The Page Length specifies the total number of bytes contained in this log page, not
including the four bytes of the header.
Parameter Code
Parameter codes supported for the read/write error counter pages are described in
Figure 8-16.