TU58 DECtape II Technical Manual

Company:Digital Equipment Corporation
Part:EK-0TU58-TM-001
Date:1979-09
Keywords:

Table of Contents

  • Chapter 1 Introduction
    • 1.1 Scope
    • 1.2 General Description
    • 1.3 Block Diagram
      • 1.3.1 Drive Control
      • 1.3.2 Processor
    • 1.4 Specifications
      • 1.4.1 Performance
      • 1.4.2 Electrical
      • 1.4.3 Mechanical
      • 1.4.4 Environmental
    • 1.5 Configurations
    • 1.6 Hardware Documentation Ordering Information
  • Chapter 2 Operation
    • 2.1 TU58-CA Rackmount Controls and Indicators
      • 2.1.1 Front Panel
      • 2.1.2 Run Indicator
      • 2.1.3 Application and Removal of Power
    • 2.2 TU58 Components Controls and Indicators
      • 2.2.1 Application and Removal of Power
    • 2.3 Cartridge
      • 2.3.1 Cartridge Loading
      • 2.3.2 Cartridge Unloading
      • 2.3.3 Keeping Track of Cartridges
      • 2.3.4 Write Protect Tab
      • 2.3.5 Cartridge Storage and Care
    • 2.4 Maintenance
      • 2.4.1 Head and Puck Cleaning
      • 2.4.2 Operator Trouble Isolation
      • 2.4.3 Cartridge Wear
    • 2.5 Cartridge Repair
      • 2.5.1 Metal-Base Cartridge Tape Rethreading Procedure
      • 2.5.2 Plastic-Base Cartridge Tape Rethreading Procedure
        • 2.5.2.1 Preparation for Threading
        • 2.5.2.2 Theading the Cartridge
        • 2.5.2.3 Closing the Cartridge
  • Chapter 3 Programming
    • 3.1 General Principles
      • 3.1.1 Block Number, Byte Count, and Drive Number
      • 3.1.2 Special Handler Functions
    • 3.2 Radial Serial Protocol (RSP)
      • 3.2.1 Message Packets
      • 3.2.2 Flag Byte Op Codes
      • 3.2.3 Break and Initialization
    • 3.3 Command Set
      • 3.3.1 Command Packets
        • 3.3.1.1 Maintenance Mode
        • 3.3.1.2 Special Address Mode
      • 3.3.2 Data Packets
      • 3.3.3 End Packets
    • 3.4 The Instruction Set
  • Chapter 4 Installation
    • 4.1 Installation of Rack Version
      • 4.1.1 Mounting in a Rack
      • 4.1.2 Power Selection for the Rack Version
      • 4.1.3 Removing Module From Chassis
      • 4.1.4 Reinstalling the Module
    • 4.2 Drive and Module Installation
    • 4.3 Interface Standards Selection and Setup
      • 4.3.1 Selecting Interface Standards
      • 4.3.2 Connecting Standard Jumpers
    • 4.4 Operational Checkout
      • 4.4.1 Checkout of Interface
      • 4.4.2 Checkout of RSP and Command Function
  • Chapter 5 Options
    • 5.1 Run Indicator
      • 5.1.1 Installation
    • 5.2 Boot Switch
  • Chapter 6 Technical Description
    • 6.1 Block Diagram
      • 6.1.1 Data Flow, Tape to Interface
      • 6.1.2 Data Flow, Interface to Tape
      • 6.1.3 Tape Motion Control
    • 6.2 Velocity Control
      • 6.2.1 Velocity Sensing
      • 6.2.2 Velocity Servo
      • 6.2.3 Velocity Change
      • 6.2.4 Drive Selection and Direction Change
      • 6.2.5 Microprocessor Velocity Control
      • 6.2.6 Run Timeout
      • 6.2.7 Motor Overcurrent Drive Limit
      • 6.2.8 Transient Suppression
    • 6.3 Head Selection
    • 6.4 Write Circuit and Interlock
    • 6.5 Erase Circuit
    • 6.6 Data Encoding and Detection
      • 6.6.1 Encoding
      • 6.6.2 Detection
    • 6.7 Read Amplifier and Automatic Gain Control
    • 6.8 Charge Pump
    • 6.9 Mark Finder
    • 6.10 Interfaces
      • 6.10.1 Serial Interface
      • 6.10.2 Parallel Interface
    • 6.11 Microprocessor and Memory
      • 6.11.1 Memory and Bus Operation
      • 6.11.2 Trap and Restarts
      • 6.11.3 SID, SOD, and Data Encoding
      • 6.11.4 Clock
      • 6.11.5 Reset
    • 6.12 8155 I/O Ports, Registers, and Timer
      • 6.12.1 I/O Ports
      • 6.12.2 Registers and Timer
    • 6.13 Firmware
      • 6.13.1 Initialization and Radial Serial Protocol
        • 6.13.1.1 Flag Byte, Byte Count, and Checksum
        • 6.13.1.2 Op Code and Specification
        • 6.13.1.3 Data Packets
      • 6.13.2 Command Operations
  • Chapter 7 Maintenance
    • 7.1 Introduction
    • 7.2 Trouble Isolation Chart
    • 7.3 Repairable Drive Problems
    • 7.4 Removal and Replacement of Drive Parts
      • 7.4.1 Tachometer Encoder Wheel and Pickup Housing
      • 7.4.2 Microswitches
    • 7.5 Power Supply Removal and Replacement
  • Appendix A TU58/PDP-11 Toggle In Boot
  • Appendix B Field Replaceable Unit Spares List

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