Seagate STT8000A manual Write Buffer download microcode command

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Chapter 5ATAPI Interface

Write Buffer (download microcode) command

Bit	7	6	5	4		3	2	1	0
Byte

0				Operation code (3Bh)

1			Reserved					101 (Mode)

2					Reserved

3					Reserved

4					Reserved

5					Reserved

6	(MSB)

7				Transfer Length

8									(LSB)

9					Reserved

The Write Buffer command is intended only to provide a method for downloading new drive microcode (firmware) into Flash EPROM, so the only valid MODE is 101 (download microcode and save). The drive must be Not Ready (unloaded) for this command to be accepted, and the transfer length is set to the download file size, which is currently 0x026800. All data is transferred in one command.

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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 Introduction Drive overviewSTT8000A internal drive without mounting brackets Features Typical system configurations Minicartridge technology overviewSoftware Flash EepromReferences About this manual Chapter Title DescriptionPhysical specifications SpecificationsOverview STT8000A 3.5-Inch mount general dimensions Power specifications Specification MeasurementPerformance specifications Feature SpecificationSpecification Operational Non-operational Environmental requirementsMean-Time-Between Failures ReliabilityMean-Time-To-Repair Recommended tapes Tape capacities and formatsRegulatory compliance TUV & IEC-RHEINLANDBefore you begin InstallationIntroduction Handling guidelinesSetting jumpers Jumper block and jumper settingsInstalling the drive Aligning the drive in the computerMounting dimensions Mounting holes on internal drive without mounting brackets ATA-2 Interface pin assignments Pin Assignment Description SourceREQ Chapter Installation Drive operation and maintenance Front panel LEDUsing Travan cartridges Loading and unloading cartridgesSetting the write-protect switch Travan cartridge write-protect switch-locked positionLoading 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 ATA registers AbrtBits Mnemonic Description Supported ATA Commands Previous Cmd Int ReasonFeature Number Set Feature Commands Atapi Identify Device A1h Atapi Packet Command A0h Atapi interface DSCErase command Inquiry command Bit ByteLoad/Unload command Locate command Log Select command Log Sense command Error Counter Page Read Following table presents the Error Counter Page layoutTape Capacity Page Code Following table presents the Tape Capacity Page layoutMode Select command Mode Sense command Code DescriptionMode Parameter Header Mode Block DescriptorMode Medium Partition Mode Capabilities and Mechanical StatusMode Tape Parameters Read command Read Position command Following table describes the Read Position layoutChapter 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 Tape reference servo pattern BlocksWrite equalization RandomizationChapter Tape format Block diagram Theory of operationsCartridge load mechanism Capstan drive motor assemblyMechanics ChassisControl circuits Sensors and switchesHead design Media-Travan minicartridges Travan minicartridgeGlossary Appendix a Glossary Glossary Appendix a Glossary Acronyms and measurements Acronyms and abbreviationsLSI Units of measurement Measure MeaningAppendix B Acronyms and Measurements