SCSI-2 Parity Errors

Kurt Chan kc at
Wed Mar 15 11:36:30 PST 1995

| What should happen if parity errors are detected in COMMAND and/or DATA OUT
| phase? How should retries be performed in each of these situations and
| what should happen after retries have been exhausted?

Denis asks an interesting question.  What about the initiator response
if it detects bad parity on a DATA IN phase?

More specifically, what would happen if an error occurred on a command
sent with NACA=1, and a parity error occurred on DATA IN during the
subsequent Request Sense data transfer?  Would the sense data be lost
permanently regardless of whether ACA is in effect?

      Kurt Chan                          kc at
      Hewlett-Packard                    Voice: 916-785-5621
      System Interconnect Lab            Fax:   916-785-2875

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