Shugart SA800 - Table of Contents

TABLE OF CONTENTS
1.0 Introduction ' 1
1.1 General Description 1
1
.2 Specification Summary 2
1
.2.1 Performance Specifications 2
1.2.2 Functional Specifications 2
1.2.3 Physical Specifications 2
1.2.4 Reliability Specifications 3
2.0 Functional Characteristics 5
2.1 General Operation 5
2.2 Read/Write and Control Electronics
, 5
2.3 Drive Mechanism 5
2.4 Positioning Mechanism 5
2.5 Read/Write Head 5
2.6 Recording Format 6
2.7 Optional Features 6
2.8 Model Differences 6
3.0 Functional Operations 7
3.1 Power Sequencing 7
3.2 Drive Selection 7
3.3 Track Accessing 7
3.3.1 Step Out 7
3.3.2 Step
In 7
3.4 Read Operation 7
3.5 Write Operation ,
.. , , .. , , 9
3.6 Sequence of Events ' 9
4.0
Electric~llnterface 13
4.1 Signal Interface .. , , , 13
4.1.1 Input Lines 13
4.1.1 Input Line Termination 15
4.1.1.2 Drive Select 1-4 , , 15
4.1.1.3 Direction Select , , , . , 15
4.1 .1 .4 Step , 15
4.1 .1 .5 Write Gate , 15
4.1.1.6 Write Data , . ,
.. , 16
4.1.1.7 Head Load (Alternate Input) 16
4.1.1.8
In Use (Alternate Input) .. , .. , . , , , 16
4.1.2 Output Lines 16
4.1.2.1 Track 00 , . , , ' 16
4.1.2.2 Index '.' 16
4.1 .2.3 Sector (SA801 only) '.' 17
4.1 .2.4 Ready 17
4.1 .2.5 Read Data 17
4.1 .2.6 Sep Data 17
4.1.2.7 Sep Clock 17
4.1.2.8 Write Protect (Optional on SA800) 17
4.1.2.9 Disk Change (Alternate Output) 18
4.1 .3 Alternate I/O Pins 18
4.2 Power Interface 18
4.2.1 AC Power 18
4.2.2
DC Power 19