A SCSI Message Code is a computer term which defines how SCSI devices send interface management information. The message code comprises one or more bytes.
List of SCSI Message Codes
00
COMMAND COMPLETE
01nnyy...
EXTENDED MESSAGE - nn is the length, yy is the extended message code
010203ee
WIDE DATA TRANSFER REQUEST where ee is the transfer width exponent
010301pprr
SYNCHRONOUS DATA TRANSFER REQUEST - where pp is the period and rr is the REQ/ACK offset
010500aaaa
MODIFY DATA POINTER - where aaaa is added to the current data pointer
01nn02...
02
SAVE PTRS
04
DISCONNECT
05
INITIATOR DETECTED ERROR
06
ABORT
07
MESSAGE REJECT
08
NO OPERATION
09
MESSAGE PARITY ERROR
0A
LINKED COMMAND COMPLETE
0B
LINKED COMMAND COMPLETE (WITH FLAG)
0C
BUS DEVICE RESET
0D
ABORT TAG
0E
CLEAR QUEUE
0F
INITIATE RECOVERY
10
RELEASE RECOVERY
11
TERMINATE I/O PROCESS
20
SIMPLE QUEUE TAG
21
HEAD OF QUEUE TAG
22
ORDERED QUEUE TAG
230i
IGNORE WIDE RESIDUE - where i is the number of bytes to ignore
