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101

SCSI-2 Drive Command Set

Write Long Command (3FH)

Chapter 22-106

Write Long Command (3FH)

This command writes data starting at the specified Logical Block

Address, without using ECC generation circuitry. The ECC field is also

written with data transferred to the drive.

NOTE The 9.1 and 5.2 Gbyte capacity drives cannot Format, Erase, Write, or

Write and Verify 650 Mbyte and 1.3-Gbyte optical disks. The 2.6 Gbyte

capacity drives cannot Format, Erase, Write, or Write and Verify 650

Mbyte optical disks. If this command is issued with any of these drive/

media combinations, a CHECK CONDITION status will result with the

Sense Key/Additional Sense Code set to Data Protect/Write Protected.

Table 2-96 Write Long Command CDB

Byte 7 6 5 4 3 2 1 0

0 Operation Code (3FH)

1 Logical Unit Number

(0)

Reserved (0) RelAdr

2 Starting Logical Block Address (MSByte)

3 Starting Logical Block Address

4 Starting Logical Block Address

5 Starting Logical Block Address (LSByte)

6 Reserved (0)

7 Transfer Length (MSByte)

8 Transfer Length (LSByte)

9 PBA SC Reserved (0) Flag Link

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 377 378

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