Table 5-216WRITE SAME Command Descriptor Block-Data Format

Bit

7

6

5

 

4

 

3

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

Operation Code (41h)

 

 

 

 

 

 

 

 

 

 

 

1

 

 

Reserved

 

PBdata

LBdta

RelAdr

 

 

 

 

 

 

 

 

 

2-5

 

 

 

Logical Block Address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

7-8

 

 

 

 

Number of Blocks

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 5-217WRITE SAME Field Description

Field

Description

PBdata

Physical Block Data - Not supported. This feild must be

zero.

 

 

 

 

Logical Block Data - A value of 1 requests that the drive

LBdata

replace the first four bytes of the data to be written to the

current logical sector with the logical sector address of the

 

 

sector currently being written.

 

 

RelAdr

Relative Address. - Not supported. This feild must be

zero

 

 

 

Logical Block Address

The address of the first logical sector where the Write op-

eration will occur.

 

 

 

 

This feild contains the number of contiguous logical

Number of Blocks

blocks that are to be written. A value of 0 requests that all

the remaining logical blocks on the medium are to be

 

 

written.

 

 

5.50WRITE SKIP MASK Command (EAh)

The WRTIE SKIP MASK command allows the initiator to condition the function of the WRITE commands to allow only selected data to be transferred over the SCSI interface. A WRITE SKIP MASK command precedes a WRITE (10) command; the WRITE (10) command must be linked to the WRITE SKIP MASK command or the skip mask is lost and a CHECK CONDITION status is returned.

Table 5-218WRITE SKIP MASK Command (EAh)

Bit

7

6

5

4

 

3

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (EAh)

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

Reserved

 

 

 

2 - 5 (MSB)

Logical Block Address

(LSB)

6

Skip Mask Length

7 - 8 (MSB)

Transfer Length

(LSB)

9

VU

Reserved

Flag

Link

 

 

 

 

 

5-154 Maxtor Atlas 10K V