HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 132

Synchronize Cache (35H),

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SCSI-2 Drive Command Set Synchronize Cache (35H) SCSI-2 Drive Commands Table 2-82 Synchronize Cache (35H) This command initiates the writing of all cached write data to the optical disk. Ensures that logical blocks in the cache memory, within the specified range, have their most recent data value recorded on the optical disk. Synchronize Cache Command Byte 7 0 1 2 3 4 5 6 7 8 9 6 5 4 3 2 1 0 Operation Code (35H) Reserved (0) Immed Rsvd Logical Block Address (MSByte) Logical Block Address Logical Block Address Logical Block Address (LSByte) Reserved (0) Number of Blocks (MSByte) Number of Blocks (LSByte) Reserved (0) Flag Link Immed Number of Blocks An Immediate bit of 1 indicates that the target returns a status as soon as the command descriptor block is validated. An Immed bit of 0 indicates that the status is not returned until the operation is completed. The Number of Blocks field specifies the total number of contiguous logical blocks within the range. A Number of Blocks bit of 0 indicates that all remaining logical blocks on the logical unit are within the range. A logical block within the specified range that is not in cache memory is not considered an error. Chapter 2 2-95

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SCSI-2 Drive Command Set
Synchronize Cache (35H)
Chapter 2
2-95
SCSI-2 Drive Commands
Synchronize Cache (35H)
This command initiates the writing of all cached write data to the optical
disk. Ensures that logical blocks in the cache memory, within the
specified range, have their most recent data value recorded on the optical
disk.
Immed
An Immediate bit of 1 indicates that the target returns
a status as soon as the command descriptor block is
validated.
An Immed bit of 0 indicates that the status is not
returned until the operation is completed.
Number of
Blocks
The Number of Blocks field specifies the total number of
contiguous logical blocks within the range. A Number of
Blocks bit of 0 indicates that all remaining logical blocks
on the logical unit are within the range. A logical block
within the specified range that is not in cache memory
is not considered an error.
Table 2-82
Synchronize Cache Command
Byte
7
6
5
4
3
2
1
0
0
Operation Code (35H)
1
Reserved (0)
Immed
Rsvd
2
Logical Block Address (MSByte)
3
Logical Block Address
4
Logical Block Address
5
Logical Block Address (LSByte)
6
Reserved (0)
7
Number of Blocks (MSByte)
8
Number of Blocks (LSByte)
9
Reserved (0)
Flag
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