AS 3605.2-1988

1 - AS 3605.2-1988 INFORMATION PROCESSING-DATA INTERCHANGE ON 200 mm FLEXIBLE DISK CARTRIDGES USING MODIFIED FREQUENCY...
4 - PREFACE
5 - Contents
6 - 0 Introduction
6 - 1 Scope and field of application
6 - 2 Conformance
6 - 3 References
6 - 4 General requirements
6 - 4.1 Mode of recording
6 - 4.1.1 Track 00, side 0
6 - 4.1.2 All tracks excluding track 00, side 0
7 - 4.2 Track location tolerance of the recorded flexible disk cartridge
7 - 4.3 Recording offset angle
7 - 4.4 Density of recording
7 - 4.5 Flux transition spacing
7 - 4.5.1 Flux transition spacing for track 00, side 0
7 - 4.5.2 Flux transition spacing for all tracks excluding track 00, side 0
8 - 4.6 Average signal amplitude
8 - 4.7 Byte
8 - 4.8 Sector
8 - 4.9 Cylinder
8 - 4.10 Cylinder number
8 - 4.11 Data capacity of a track
8 - 4.12 Hexadecimal notation
8 - 4.13 Error detection characters (EDC)
8 - 5 Track layout after the first formatting for track 00, side 0
9 - 5.1 Index gap
9 - 5.2 Sector identifier
9 - 5.2.1 Identifier mark
9 - 5.2.2 Address identifier
9 - 5.3 Identifier gap
9 - 5.4 Data block
9 - 5.4.1 Data mark
9 - 5.4.2 Data field
9 - 5.4.3 EDC
9 - 5.5 Data block gap
9 - 5.6 Track gap
10 - 6 Track layout after the first formatting for all tracks excluding track 00, side 0
10 - 6.1 Index gap
10 - 6.2 Sector identifier
10 - 6.2.1 Identifier mark
10 - 6.2.2 Address identifier
11 - 6.3 Identifier gap
11 - 6.4 Data block
11 - 6.4.1 Data mark
11 - 6.4.2 Data field
11 - 6.4.3 EDC
11 - 6.5 Data block gap
11 - 6.6 Track gap
11 - 7 Track layout of a recorded flexible disk for data interchange
11 - 7.1 Representation of characters
12 - 7.2 Good and bad cylinders
12 - 7.3 Requirements for cylinders
12 - 7.4 Layout of the tracks of a good cylinder
12 - 7.4.1 Index gap
12 - 7.4.2 Sector identifier
13 - 7.5 Layout of the track of a bad cylinder
13 - 7.5.1 Contents of the fields
13 - 7.5.2 Requirements for tracks
14 - Annex A - EDC implementation
15 - Annex B - Procedure and equipment for measuring flux transition spacing
15 - B.1 General
15 - B.2 Format
15 - B.3 Test equipment
16 - B.4 Procedure of measurement
17 - Annex C - Data separators for decoding MFM recording

Part 2 specifies the dimensional, physical and magnetic characteristics of a 200 mm flexible disk cartridge using modified frequency modulation recording at 13 262 ftprad, 1.9 tpmm, on both sides. This Standard is identical with ISO 7065-2:1985.

This part of ISO 7065 specifies the magnetic characteristics, the track layout, and a track format to be used on a 200 mm (8 in) flexible disk cartridge, recorded at 13 262 ftprad on both sides using modified frequency modulation recording at a track density of 1,9 tracks per millimetre (tpmm) [48 tracks per inch (tpi)] which is intended for data interchange between data processing systems.NOTE - Numeric values in the SI and/or Imperial measurement system in this International Standard may have been rounded off and are therefore consistent with, but not exactly equal to, each other. Either system may be used, but the two should be neither intermixed nor reconverted. The original design of this part of ISO 7065 was made using the Imperial measurement system.