User`s manual

siop_struc (Command Structure)
SBCSCSI/D1 B-3
B
User ID
The user ID field is for user command logging. This field is not examined by
the Firmware nor is it altered by the Firmware.
Command Control
The command control field designates the mode in which the Firmware
operates. The three mode bits, INTATR, TARGET, and CONFIG, are mutually
exclusive. The Firmware can operate in only one mode per command request.
In addition to mode control, this field also contains command control
information pertaining to the request contained within the command
structure. The bits within this field are defined below. If a bit is defined for
more than one mode then all modes for which that bit is valid are defined. Bits
that are reserved (rsrvd) should be cleared for future compatibility.
Bit 31 -- INTATR
If set, this bit designates the information in the structure to contain control
information in regards to an initiator mode request. Other bits in the
command control field are examined and used as indicated by their initiator
definitions.
Table B-2. Command Control Bit Definitions
BIT 31 30 29 28 27 26 25 24
NAME INTATR TARGET CONFIG rsrvd rsrvd rsrvd rsrvd rsrvd
BIT 23 22 21 20 19 18 17 16
NAME rsrvd rsrvd rsrvd rsrvd rsrvd PAR FIRST DEVRST
BIT 15 14 13 12 11 10 9 8
NAME MIBUF MOBUF NO_ATN rsrvd rsrvd SIOPADD SIOPINT SCSIRST
BIT76543210
NAME TAG_Q LINK rsrvd S/G D_PH R/W
ASYNC SYNC