26 read long command, 27 write long command – FUJITSU MCJ3230SS User Manual
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4.3 SCSI Commands
C156-E224-01EN
4-41
4.3.26 READ LONG command
Table 4.71 READ LONG command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (3Eh)
1
LUN
Reserved
2-5
Logical Block Address
6
Reserved
7-8
Byte Transfer Length
9
Reserved
The READ LONG command reads data in the data, CRC, and ECC sections from
the specified logical block address.
The length of the transfer data must be a multiple of 600 (258h) bytes for 512-byte
media and a multiple of 2380 (94Ch) bytes for 2048-byte media.
4.3.27 WRITE LONG command
Table 4.72 WRITE LONG command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (3Fh)
1
LUN
Reserved
2-5
Logical Block Address
6
Reserved
7-8
Byte Transfer Length
9
Reserved
The READ LONG command writes data in the data, CRC, and ECC sections from
the specified logical block address.
The length of the transfer data must be a multiple of 600 (258h) bytes for 512-byte
media and a multiple of 2380 (94Ch) bytes for 2048-byte media.