List of SCSI message codes
From Wikipedia, the free encyclopedia
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.
[edit] List of SCSI Message Codes
| Code (hex) | Meaning |
|---|---|
| 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... | EXTENDED IDENTIFY |
| 02 | SAVE DATA POINTER |
| 03 | RESTORE POINTERS |
| 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 |
| 24-2F | Reserved for two-byte messages |
| 80-FF | IDENTIFY |
