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Shugart Manuals
Computer Hardware
SA810
Owner's manual
Shugart SA810 Owner's Manual
Single/double-sided half-height diskette storage drives
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Also See for SA810
:
Service manual
(126 pages)
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Contents
Table of Contents
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Table of Contents
Table of Contents
Section I Introduction
General Description
Specifications Summary
Performance Specifications
Functional Specifications
Physical Specifications
Reliability Specifications
Functional Characteristics
Electronics
Drive Mechanism
Positioning Mechanism
Read/Write Heads
Recording Formats
Functional Operations
Power Sequencing
Drive Selection
Motor on
SA810/860 Functional Diagram
Track Accessing
Step out
Step in
Track Access Timing, Standard Seek
Side Selection (SA860 Only)
Track Access Timing, Buffered Seek
Read Initiate Timing
Read Operation
Read Signal Timing (FM Encoding)
FM and MFM Code Comparisons
Write Operation
Write Initiate Timing
Sequence of Events
Electrical Interface
Introduction
Signal Interface
Inputlines
Input Line Termination
Drive Select 1-4
Side Select (SA860 Only)
Interface Signal Driver/Receiver
Direction Select
Step
Write Gate
Write Data
Motor on (Alternate Input)
In Use (Alternate Input)
External Write Current Switch (Alternate Input)
Output Lines
Track 00
Index
Sector (Hard Sector Only)
Ready
Index Timing
Sector Timing
Read Data
Sep Data
Sepclock
Write Protect
True Ready
Disk Change (Optional Output)
Two Sided (Optional Output)
Alternate I/O Pins
Power Interface
Frame Grounding
DC Power Profile
Physical Interface
Introduction
J2/P2 Connector
Section IV Drive Physical Specifications
Introduction
Mechanical Dimensions
Mounting
Stacking Dual Drives
Physical Dimensions
Error Recovery
Write Errors
Read Errors
Seek Errors
Recording Format
Recording Format (Single Density)
Bit Cell
Data Pattern
Byte
Recording Format (Double Density)
Data Bytes
Rules of Encoding
FM Encoding
MFM Encoding
Tracks and Recording Formats
Tracks
Track Format
Hard Sector Recording Format
Soft Sector Recording Format
Typical Track Index Format
FM and MFM Encoding
SA810/860 Hard Sector Recording Format (FM)
MFM Track Format Comparison
MFM Index Pre Address Mark
Index Address Mark FM
MFM Index Address Mark
Address Mark FM
MFM Pre ID/Data Address Mark
Data Address Mark FM
Deleted Data Address Mark FM
MFM Data Address Mark
MFM Deleted Data Address Mark
Customer Installable Options
Introduction
External Write Current Switch
Two-Sided Status (Optional Output SA860 Only)
Disk Change (Optional Output)
External Write Current Option
Disk Change Timing
Side Selection Using Direction Select (SA860 Only)
Side Selection Using Drive Select (SA860 Only)
Disk Change Circuit
Side Selection Using Direction Select
In Use Alternate Input
Motor on Without Selecting Drive
Side Selection Using Drive Select
Motor on by Optional Motor on and Drive Select
Motor off Delay
Motor on Without Selecting Drive Circuit
Radial Ready
Motor on by Opt. Motor on and Drive Select Circuit
Stepper Power down
Write Protect Optional Use
Radial Ready Circuit
Write Protect Circuit
Operation Procedures
Introduction
Diskette Loading and Handling
Write Protect: Shugart 8-Inch Diskettes
Write Protect: IBM Diskettes
Diskette Write Protect
Write Protect Notch Specifications
Packaging
Pallet Loading
Appendix A Machine Level Code Information
Appendix Bordering Information
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