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AS 3631.2-1989

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Information processing systems - Data interchange on 90 mm flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Track format
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

06-30-2017

Language(s)

English

Published date

01-01-1989

Publisher

Standards Australia

1 - AS 3631.2-1989 INFORMATION PROCESSING SYSTEMS-DATA INTERCHANGE ON 90 mm FLEXIBLE DISK CARTRIDGES USING MODIFIED FREQUENCY...
4 - PREFACE
5 - Contents
7 - 0 Introduction
7 - 1 Scope and field of application
7 - 2 Conformance
7 - 3 References
7 - 4 General requirements
7 - 4.1 Mode of recording
7 - 4.2 Track location tol erance of the recorded flexible disk cartridge
7 - 4.3 Recording offset angle
8 - 4.4 Density of recording
8 - 4.5 Flux transition spacing
9 - 4.6 Average Signal Amplitude
9 - 4.7 Byte
9 - 4.8 Sector
9 - 4.9 Cylinder
9 - 4.10 Cylinder number
9 - 4.11 Data capacity of a track
9 - 4.12 Hexadecimal notation
9 - 4.13 Error Detection Characters (EDC)
9 - 5 Track layout
9 - 5.1 Index Gap
9 - 5.2 Sector Identifier
10 - 5.2.1 Identifier Mark
10 - 5.2.2 Address Identifier
10 - 5.3 Identifier Gap
10 - 5.4 Data Block
10 - 5.4.1 Data Mark
10 - 5.4.2 Data Field
10 - 5.4.3 EDC
10 - 5.5 Data Block Gap
10 - 5.6 Track Gap
10 - 6 Coded representation of data
10 - 6.1 Standards
10 - 6.2 Coding methods
12 - Annex A - EDC implementation
13 - Annex B - Procedure and equipment for measuring flux transition spacing
13 - B.1 General
13 - B.2 Format
13 - B.3 Test equipment
14 - B.4 Procedure for measurement
15 - Annex C - Data separators for decoding MFM recording
16 - Bibliography

Part 2 specifies the characteristics of 90 mm flexible disk cartridges recorded at 7958 ftprad using modified frequency modulation (MFM) recording on 80 tracks on each side. It is identical to and has been reproduced from ISO Standard 8860 - Data interchange on 90 mm (3.5 in) flexible disk cartridges using modified frequency modulation recording at 7958 ftprad on 80 tracks on each side - Part 2: 1987 Track format.

This part of ISO 8860 specifies the track layout, the track format and the characteristics of recorded signals.NOTE Numeric values in the SI and/or Imperial measurement system in this part of ISO 8860 may have been rounded off and therefore are consistent with, but not exactly equal to, each other. Either system may be used, but the two should be neither intermixed nor re-converted. The original design was made using SI units.

Committee
IT-001
DocumentType
Standard
ISBN
0 7262 5428 2
Pages
10
PublisherName
Standards Australia
Status
Withdrawn

Standards Relationship
ISO 8860-2:1987 Identical

AS 3632-1993 Powered rotary lawnmowers - Blades and blade mounting attachments
AS 3631.1-1989 Information processing systems - Data interchange on 90 mm flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad on 80 tracks on each side - Dimensional, physical and magnetic characteristics
AS 2765-1985 Information processing - File structure and labelling of flexible disk cartridges for information interchange
AS 1953-1987 Information processing - ISO 7-bit and 8-bit coded character sets - Code extension techniques

AS 3748-1990 Information processing systems - Small Computer System Interface (SCSI)
AS 4116-1993 Information processing systems - Data interchange on 90 mm flexible disk cartridges using modified frequency modulation recording at 31 831 ftprad on 80 tracks on each side - ISO Type 303
AS 3714-1989 Data storage and transfer media - Volume and file structure of flexible disk cartridges (diskettes) for information interchange

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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