SCSI Commands: 32BREAD POSITION Page 1483.20.2.2 READ POSITION Long Form Field DescriptionsField Bytes Bits DescriptionBOP 0 7 0 = The current logical position is not at BOP.1 = The current logical position is at Beginning-of-Partition (BOP).EOP 0 6 0 = The current logical position is not between early warning andend-of-tape.1 = The current logical position is between early warning and end-of-tape.MPU 0 3 0 = File Number field is valid.1 = File Number field is invalid.BPU 0 2 0 = Block Number field is valid.1 = Block Number field is invalid.PartitionNumber4-7 This field is always 0.BlockNumber8-15 This field indicates the number of logical blocks including filemarksbetween beginning-of-medium and the current logical position.FileNumber16-23 This field indicates the number of filemarks between beginning-of-medium and the current logical position.SetNumber24-31 This field is always 0.Reserved All bits are 0.3.20.3 READ POSITION Completion StatusCode Message Description00h GoodStatus• The drive is ready to perform any appropriate command.• The drive remains in any previously set mode.• The tape is not moved.02h CheckConditionUse the REQUEST SENSE command to retrieve status information. PossibleSense Keys are:Code Message Description02h Not Ready No cartridge is in the drive.04h Hardware Error Drive hardware failure detected.05h Illegal Request The CDB contains an invalid bit.06h Unit Attention The cartridge was changed, or the drive wasreset prior to this command.
