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Table of Contents
STT8000A Product Manual Page vii
Mode Parameter Header ................................................................................ 49
Mode Block Descriptor.................................................................................... 49
Mode Medium Partition Page.......................................................................... 50
Mode Capabilities and Mechanical Status Page.............................................. 50
Mode Tape Parameters Page......................................................................... 51
Read command .................................................................................................... 52
Read Position command....................................................................................... 53
Request Sense command..................................................................................... 55
Rewind command ................................................................................................. 57
Space command................................................................................................... 58
Test Unit Ready command.................................................................................... 59
Write command .................................................................................................... 60
Write Filemark command ...................................................................................... 61
Write Buffer (download microcode) command ....................................................... 62
Tape format 63
Introduction........................................................................................................... 63
Tape partitioning................................................................................................... 63
Track positions ..................................................................................................... 63
Track numbering................................................................................................... 64
Track format ......................................................................................................... 64
Frames........................................................................................................... 64
Blocks ............................................................................................................ 66
Tape reference servo pattern................................................................................ 66
Write equalization ................................................................................................. 67
Randomization...................................................................................................... 67
Theory of operations 69
Overview .............................................................................................................. 69
Block diagram....................................................................................................... 69
Mechanics ............................................................................................................ 70
Cartridge load mechanism .............................................................................. 70
Capstan drive motor assembly........................................................................ 70
Chassis .......................................................................................................... 70
Control circuits...................................................................................................... 71
Head design ......................................................................................................... 71
Flash EEPROM .................................................................................................... 71
Sensors and switches........................................................................................... 71
Media—Travan minicartridges............................................................................... 72