Seagate STT8000A manual Load/Unload command

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ATAPI InterfaceChapter 5

Load/Unload command

Bit	7	6	5		4		3	2	1	0
Byte

0					Operation code (1Bh)

1						Reserved

2						Reserved

3						Reserved

4				Reserved					Re-Ten	Load

5						Reserved

LOAD (with or without Re-tension) is accepted any time a tape is present in the drive, (even if status indicates it is already loaded). This command includes implicit rewind and select partition 0 operations. The DSC bit is reset (0) after this command is accepted and is set (1) when the drive has initialized and is ready. REQUEST SENSE can then be used to verify successful command completion.

The UNLOAD option(s) re-tensions the tape (if selected) and moves the tape to the logical BOT or EOT end (as selected), then causes the drive to report not ready to any subsequent media access commands. Either a manual load operation or LOAD command is required for the drive to return to ready.

STT8000A Product Manual

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Contents STT8000A Atapi Minicartridge Drive Product Manual Page FCC Notice Important Information About This Manual Table of Contents Atapi interface Tape format Glossary Acronyms and measurements Drive overview IntroductionSTT8000A internal drive without mounting brackets Features Minicartridge technology overview Typical system configurationsSoftware Flash EepromReferences Chapter Title Description About this manualPhysical specifications SpecificationsOverview STT8000A 3.5-Inch mount general dimensions Specification Measurement Power specificationsFeature Specification Performance specificationsEnvironmental requirements Specification Operational Non-operationalMean-Time-Between Failures ReliabilityMean-Time-To-Repair Tape capacities and formats Recommended tapesTUV & IEC-RHEINLAND Regulatory complianceIntroduction InstallationBefore you begin Handling guidelinesJumper block and jumper settings Setting jumpersAligning the drive in the computer Installing the driveMounting dimensions Mounting holes on internal drive without mounting brackets Pin Assignment Description Source ATA-2 Interface pin assignmentsREQ Chapter Installation Front panel LED Drive operation and maintenanceLoading and unloading cartridges Using Travan cartridgesTravan cartridge write-protect switch-locked position Setting the write-protect switchLoading revised firmware via Seagate firmware cartridge Caring for tape cartridges Care and maintenance of the drive and cartridgesCaring for the drive Capstan Tape Head Troubleshooting Chapter Atapi interface ATA-2 SignalsATA-2 Interface Abrt ATA registersBits Mnemonic Description Previous Cmd Int Reason Supported ATA CommandsFeature Number Set Feature Commands Atapi Identify Device A1h Atapi Packet Command A0h DSC Atapi interfaceErase command Bit Byte Inquiry commandLoad/Unload command Locate command Log Select command Log Sense command Following table presents the Error Counter Page layout Error Counter Page ReadFollowing table presents the Tape Capacity Page layout Tape Capacity Page CodeMode Select command Code Description Mode Sense commandMode Block Descriptor Mode Parameter HeaderMode Capabilities and Mechanical Status Mode Medium PartitionMode Tape Parameters Read command Following table describes the Read Position layout Read Position commandChapter Atapi Interface Request Sense command Following table describes the Request Sense layout Rewind command Space command Test Unit Ready command Write command Write Filemark command Write Buffer download microcode command Tape partitioning Tape formatTrack positions Track format Track numberingFrames General track layout Blocks Tape reference servo patternRandomization Write equalizationChapter Tape format Theory of operations Block diagramMechanics Capstan drive motor assemblyCartridge load mechanism ChassisControl circuits Sensors and switchesHead design Travan minicartridge Media-Travan minicartridgesGlossary Appendix a Glossary Glossary Appendix a Glossary Acronyms and abbreviations Acronyms and measurementsLSI Measure Meaning Units of measurementAppendix B Acronyms and Measurements