The following summarizes valid modes of operation. If an illegal mode is set the mode select command will
complete successfully but the action of the file when an error occurs is undefined.
PER DTE DCR TB DESCRIPTION
0000Retries and Error Correction are attempted. Recovered and/or corrected data (if
any) is transferred with no CHECK CONDITION status at the end of the transfer.
no err The transfer length is exhausted.
soft err The transfer length is exhausted. Transferred data includes blocks con-
taining recovered errors.
hard err Data transfer stops when an unrecoverable error is encountered. The
unrecoverable block is not transferred to the initiator. The file then
creates the CHECK CONDITION status with the appropriate Sense
Key.
0001Retries and Error Correction are attempted. Recovered and/or corrected data (if
any) is transferred with no CHECK CONDITION status at the end of the transfer.
no err The transfer length is exhausted.
soft err The transfer length is exhausted. Transferred data includes blocks con-
taining recovered errors.
hard err Data transfer stops when an unrecoverable error is encountered. The
unrecoverable block is transferred to the initiator. The file then creates
the CHECK CONDITION status with the appropriate Sense Key.
0010Retries are attempted but no error correction (ECC) is applied. Recovered data (if
any) is transferred with no CHECK CONDITION status at the end of the transfer.
no err The transfer length is exhausted.
soft err The transfer length is exhausted. Transferred data includes blocks con-
taining recovered errors.
hard err Data transfer stops when an unrecoverable error is encountered. The
unrecoverable block is not transferred to the initiator. The file then
creates the CHECK CONDITION status with the appropriate Sense
Key.
0011Retries are attempted but no error correction (ECC) is applied. Recovered data (if
any) is transferred with no CHECK CONDITION status at the end of the transfer.
no err The transfer length is exhausted.
soft err The transfer length is exhausted. Transferred data includes blocks con-
taining recovered errors.
hard err Data transfer stops when an unrecoverable error is encountered. The
unrecoverable block is transferred to the initiator. The file then creates
the CHECK CONDITION status with the appropriate Sense Key.
0100Illegal Request-DTE must be zero when PER is zero
0101Illegal Request-DTE must be zero when PER is zero
0110Illegal Request-DTE must be zero when PER is zero
0111Illegal Request-DTE must be zero when PER is zero
98 OEM Spec. of DDRS-3xxxx
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