Message Type; Table 2.1 Scsi Message - Fujitsu MAW3073 SERIES Specifications

2.1.2

Message type

Message types are shown in Tables 2.1 and 2.2. Function of each message is explained in detail in
Section 2.3.
Code
(hex.)
00 TASK COMPLETE
01 EXTENDED MESSAGE
(See Figure 2.1 and Table 2.2.)
02 SAVE DATA POINTER
03 RESTORE POINTERS
04 DISCONNECT
05 INITIATOR DETECTED ERROR
06 ABORT TASK SET
07 MESSAGE REJECT
08 NO OPERATION
09 MESSAGE PARITY ERROR
0A LINKED TASK COMPLETE
0C TARGET RESET
0D ABORT TASK
0E CLEAR TASK SET
12 CONTINUE TASK
13 TARGET TRANSFER DISABLE
1C LOGICAL UNIT RESET
20 SIMPLE
21 HEAD OF QUEUE
22 ORDERED
23 IGNORE WIDE RESIDUE
80
to IDENTIFY
FF
Note:
If a signal is identified by an asterisk (*) in the "ATN release" column, its ATN signal shall be
made false at least 610 µs (Deskew Delay × 2) before the ACK signal of last byte of the
message is made true by the INIT. The INIT should satisfy this requirement. However, the
IDD does not force the INIT to satisfy this requirement but continues the MESSAGE OUT
phase if the ATN signal is true.
C141-C011
Table 2.1 SCSI message
Message
Number Transfer
of bytes direction
1
TARG→INIT
n+2
TARG↔INIT
1
TARG→INIT
1
TARG→INIT
1
TARG→INIT
1
TARG←INIT
1
TARG←INIT
1
TARG↔INIT
1
TARG←INIT
1
TARG←INIT
1
TARG→INIT
1
TARG←INIT
1
TARG←INIT
1
TARG←INIT
1
TARG←INIT
1
TARG←INIT
1
TARG←INIT
2
TARG↔INIT
2
TARG←INIT
2
TARG←INIT
2
TARG→INIT
1
TARG↔INIT
ATN
release
(See Table
2.2)
*
*
*
*
*
*
*
*
*
*
*
2-3