HP 220mx Guia do Utilizador descarregar pdf (Página 41)

SCSI-2 Drive Command Set

Numerical List of Commands

Chapter 22-4

Table 2-2 Group 1 and 2 Commands (10-byte command)

Code

(hex.)

Name Description Page

Number

25H Read Capacity Reads the capacity of the

optical disk

2-80

28H Read Reads data from the specified

logical block address

2-82

2AH Write Writes data to the specified

logical block address

2-84

2BH Seek Moves the optical head to the

physical track where the

specified logical block exists

2-87

2CH Erase Executes erase operation from

the specified logical block

address on rewritable disks

only

2-88

2EH Write and

Verify

Writes data to the optical disk

and then verifies the written

data by checking the error

correction code

2-90

2FH Verify Verifies the data starting from

the specified logical block

address by checking the error

correction code

2-92

34H Pre-Fetch Transfers the specified

number of data blocks starting

from the specified logical block

address to cache memory

2-94

35H Synchronize

Cache

Initiates the writing of all

cached write data to the

optical disk

2-95

37H Read Defect

Data

Reads the optical disk defect

information

2-96

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 377 378

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