Specifications

TABLE OF CONTENTS (CONT.)
2.3 Power Interface ...................................................... 2-6
2.4 Frame Grounding .................................................... 2-7
SECTION III PHYSICAL INTERFACE .................................................. 3-1
3.1 Introduction ........................................................ 3-1
3.2 Jl/Pl Connector ................................................... 3-1
3.3 J2/P2 Connector .................................................. 3-2
SECTION IV DRIVE PHYSICAL SPECIFICATIONS ....................................... 4-1
4.1 Introduction ........................................................ 4-1
4.2 Mechanical Dimensions ........................................... ~ ... 4-1
4.3 Mounting .......................................................... 4-1
4.4 Stacking Dual Drives ................................................. 4-1
SECTION V ERROR RECOVERY ..................................................... 5-1
5. 1 Write Errors ....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Read Errors ........................................................ 5-1
5.3 Seek Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
SECTION VI RECORDING FORMAT ................................................... 6-1
6.1 Recording Format (Single Density) ....................................... 6-1
6. 1. 1 Bit Cell ..................................................... 6-1
6.1.2 Byte ....................................................... 6-2
6.2 Recording Format (Double Density) ...................................... 6-2
6.3 Rules of Encoding ................................................... 6-3
6.3.1 FM Encoding ................................................. 6-3
6.3.2 MFM Encoding ............................................... 6-3
6.4 Tracks and Recording Formats .......................................... 6-3
6.4.1 Tracks ...................................................... 6-3
6.4.2 Track Format ................................................. 6-3
6.4.3 Hard Sector Recording Format .................................... 6-3
6.4.4 Soft Sector Recording Format .................................... 6-3
6.4.5 Typical Track Index Format ...................................... 6-3
SECTION VII CUSTOMER INST ALLABLE OPTIONS ...................................... 7-1
7.1 Introduction ....................................................... 7-1
7.2 External Write Current Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7.3 Two-Sided Status (Optional Output SA860 only) ........................... 7-5
7.4 Disk Change (Optional Output) ......................................... 7-5
7.5 Side Selection Using Direction Select (SA860 only) .......................... 7-6
7.6 Side Selection Using Drive Select (SA860 only) ............................. 7-6
7.7 In Use Alternate Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
7.8 Motor On Without Selecting Drive ....................................... 7-7
7.9 Motor On by Optional Motor On and Drive Select ........................... 7-8
7.10 Motor Off Delay .................................................... 7-8
7.11 Radial Ready ..................................................... 7-9
7.12 Stepper Power Down ............................................... 7-10
7.13 Write Protect Optional Use ........................................... 7-10
SECTION VIII OPERATION PROCEDURES ............................................. 8-1
8.1 Introduction ...................................................... 8-1
8.2 Diskette Loading and Handling ........................................ 8-1
8.2.1 Write Protect: Shugart 8-Inch Diskettes ........................... 8-2
8.2.2 Write Protect: IBM Diskettes ................................... 8-2
SECTION IX PACKAGING; .......................................................... 9-1
APPENDIX A MACHINE LEVEL CODE INFORMATION .................................... A-I
APPENDIX B ORDERING INFORMATION .............................................. B-1
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