Write Same - HP C2488A Technical Reference Manual

Write Same
Write Same
Requests the Target to write the single block of data transferred by the Initiator to the media
the number of times specified in the Number of Blocks field.
Write Same Command Descriptor Block (COB)
Bit
Byte
7
I
6
I
5
I
4
I
3
T
2
I
1
,
0
00 Opcode = 41H
01 Logical Unit Number
I
Reserved
I
PBdata
T
LBdata ., ReIAdr=O
02-05 (MSB=02) Logical Block Address (LSB=05)
06 Reserved
07-08 (MSB=07) Number of Blocks (LSB=08)
09
Control Byte
LBdata (Logical Block Data). If LBdata equals one
(1),
the Target will replace the first four
bytes of the data to be written to the current logical block with the logical block address of
the block currently being written.
PBdata (Physical Block Data). If PBdata equals one (1), the Target will replace the first eight
bytes of the data to be written to the current physical sector with the physical address of the
sector currently being written using the physical sector format.
Note: If both LBdata and PBdata equal one (1), the target will terminate the command with
a Status of CHECK CONDITION, a Sense Key of ILLEGAL REQUEST, and an Additional
Sens Code ofILLEGAL FIELD IN CDB.
Logical Block Address. Specifies the address of the first logical block to be written.
Number of Blocks. Specifies the number of contiguous logical blocks to be written. If set to
zero (0), the target will write the supplied data to all remaining logical blocks on the media.
DRAFT SCSI Command Descriptions A-S3
1/18/93 09:58