RESTORE POINTERS (Init ← Targ)

The RESTORE POINTERS message is sent from a target to direct the initiator to copy the most recently saved command, data, and status pointers for the I/O process to the corresponding current pointers. The command and status pointers shall be restored to the

value at the beginnings of the data area in the absence of SAVE INTERFACE DATA POINTER message or to the value at the point at which the

last SAVE DATA POINTER message occurred for that nexus.

This scanner sends this message only when received a INITIATOR DETECTED ERROR during image data transfer.

SAVE DATA POINTER (Init ← Targ)

The SAVE DATA POINTER message is sent from a target to direct the initiator to copy the current data pointer to the saved data pointer for the current I/O process.(ANSI SCSI-2 6.4 for a definition of pointers.)

SYNCHRONOUS DATA TRANSFER REQUEST

Table 3.87 SYNCHRONOUS DATA TRANSFER REQUEST

Bit

7

6

5

 

4

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

Extended message (01h)

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

Extended message length (03h)

 

 

 

 

 

 

 

 

 

 

 

2

SYNCHRONOUS DATA TRANSFER REQUEST code (01h)

3

 

 

 

Transfer Period Factor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

REQ/ACK Offset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M3099GX/GH OEM Manual

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