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3-100 M3099GX/GH OEM Manual
One-byte messages consist of a single byte transferred during a
MESSAGE phase. The value of the byte determines which message is
to be performed as defined in Table 3.83 (See ANSI SCSI-2 6.6
Table 10). The implemented Message Codes by this scanner is Table
3.83.
Table 3.83 Message Codes
Code
00h
02h
03h
04h
05h
06h
07h
08h
09h
0Ch
80h+
80h+
***
others
Key:
Support Message Name
COMMAND COMPLETE
SAVE DATA POINTER
RESTORE POINTERS
DISCONNECT
INITIATOR DETECTED
ERROR
ABORT
MESSAGE REJECT
NO OPERATION
MESSAGE PARITY ERROR
BUS DEVICE RESET
IDENTIFY
IDENTIFY
SYNCHRONOUS DATA
TRANSFER REQUEST
Reserved
Nefate ATN
Before last
ACK
—
—
—
—
Yes
Yes
Yes
Yes
Yes
Yes
—
No
Yes
Direction
Init
M
O
O
O
M
O
M
M
M
O
M
M
O
Targ
M
O
O
O
M
M
M
M
M
M
O
M
O
In
In
In
In
In
In
In
Out
Out
Out
Out
Out
Out
Out
Out
M: Mandatory support, O = Optional support
In: Target to initiator, out = Initiator to target.
Yes: Initiator shall negate ATN before last ACK of message.
No: Initiator may or may not negate ATN before last ACK of
message. (see Attention Condition)
—: Not Applicable
***: Extended message (see Tables 3.84 and 3.85)
80h: Codes 80h through FFh are used for IDENTIFY messages.
(See Table 3.86).
#03.pm5 98.2.22, 1:33 PM100