ISO-8630-3-1987.pdf
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1、8b30 PT*3 87 4853903 053b854 769 INTERNATIONAL STANDARD IS0 8630-3: 1987 - - - - TECHNICAL CORRIGENDUM I Published 1992-11-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MEXAYHAPOAHAR OPrAHkl3AqclR no CTAHAAPTbl3Al.lHH. ORGANISATION INTERNATIONALE DE NORMALISATION INTERNATIONAL ELECTROTECHNICAL
2、COMMISSION . MEWYHAPOAHAR 3JlEKTPOTEXHbl4ECKAR KOMMCCMR * COMMISSION ELECTROTECHNIOUE INTERNATIONALE Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 3: Track format
3、 B for 80 tracks TECHNICAL CORRIGENDUM 1 Traitement de linformation - change de donnes sur cartouches disquette de 130 mm (5,25 in) utilisant un enregistrement MFM 13 262 fprad, modulation de frquence modifie sur 80 pistes sur chaque face - Partie 3: Schma de piste B pour 80 pistes RECTIFICATIF TECH
4、NIQUE 1 Technical corrigendum 1 to International Standard IS0 8630-3:1987 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology. Page 6 Subclause B.3.1 Line 2, replace 32 ms“ with “32 ps“. UDC 681.327.63 Ref. No. IS0 8630-3:1987/Cor.l:1992 (E) Descriptors : data processing,
5、 information interchange, data recording devices, magnetic disks, flexible disks, track formats, specifications. Q ISO/IEC 1992 Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2
6、007 01:36:31 MDTNo reproduction or networking permitted without license from IHS -,-,- 8630 PT 3-87 4BSL903 0063938 4 1 - INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOAHAR OPrAHM3AuMR Il0 CTAHAAPTH3AuMM Information proces
7、sing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 3: Track format B for 80 tracks Reference number IS0 8630-3 : 1987 (E) 54-35 IS0 8630-3 First edition 1987-06-15 Copyright Internation
8、al Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 01:36:31 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 4 8 5 1 7 0 3 0063737 b m Foreword IS0 (the International Organization for Standard
9、ization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to
10、be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as Internati
11、onal Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting. International Standard IS0 8630-3 was prepared by Technical Committee ISO/TC 97, Information processing s ysterns. Users should note that all Internati
12、onal Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organization for Standardization, 1987 O Printed in Switzerland ii- Copyright International Organization for Sta
13、ndardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 01:36:31 MDTNo reproduction or networking permitted without license from IHS -,-,- . Contents Page O Introduction . 1 1 Scope and field of application 1 . 2 Conformance 1 3 References 1 4 Gen
14、eral requirements . 1 4.1 Mode of recording . 1 4.2 Track location tolerance of the recorded flexible disk cartridge . 1 4.3 Recording offset angle 2 4.4 Density of recording 2 4.5 Flux transition spacing 2 4.6 Average Signal Amplitude . 2 4.7 Byte 2 4.8 Sector 2 4.9 Cylinder . 2 4.10 Cylinder Numbe
15、r . 2 4.11 Data capacity of a track 2 4.12 Hexadecimal notation . 2 4.13 Error Detection Characters (EDC) . 3 5 Tracklayout . 3 5.1 IndexGap 3 5.2 Sector Identifier . 3 5.2.1 Identifier Mark 3 5.2.2 Address Identifier . 3 5.3 IdentifierGap . 4 . ill Copyright International Organization for Standardi
16、zation Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 01:36:31 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8630-3 : 1987 (E) . 5.4 Data Block 4 5.4.1 Data Mark . 4 5.4.2 DataField 4 5.4.3 EDC . 4 5.5 DataBlockGap . 4
17、5.6 TrackGap 4 6 Coded representation of data 4 6.1 Standards 4 6.2 Codingmethods 4 Ann exes A EDC implementation . 5 Procedure and equipment for measuring flux transition spacing . C Data separators for decoding MFM recording 8 6 6 iv Copyright International Organization for Standardization Provide
18、d by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 01:36:31 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 8630-3 : 1987 (E) Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartrid
19、ges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 3: Track format B for 80 tracks O Introduction IS0 8630 specifies the characteristics of 130 mm (5.25 in) flexible disk cartridges recorded at 13 262 ftprad, using modified frequency modulation (MFM)
20、 recording, on 80 tracks on each side. IS0 8630-1 specifies the dimensional, physical and magnetic characteristics of the cartridge, so as to provide physical inter- changeability between data processing systems. IS0 8630-2 specifies an alternative track format for data inter- change. IS0 8630-1 and
21、 IS0 8630-3, together with the labelling scheme specified in IS0 9293, provide for full data interchange between data processing systems. 3 References IS0 646, Information processing - IS0 7-bit coded character set for information interchange. . IS0 2022, Information processing - IS0 Fbit and 8-bit
22、coded character sets - Code extension techniques. IS0 4873, Information processing - IS0 8-bit code for infor- mation interchange - Structure and rules for implementation. IS0 6429, Information processing - IS0 7-bit and 8-bit character sets - Additional control functions for character- imaging devi
23、ces. IS0 9293, Information processing - Volume and fie structure of flexible disk cartridges for information interchange. 4 General requirements 1 Scope and field of application This part of IS0 8630 specifies the quality of recorded signals, the track layout, and a track format to be used on 130 mm
24、 (5.25 in), 13 262ftprad flexible disk cartridges intended for data interchange between data processing systems. . NOTE - Numeric values in the S I and/or Imperial measurement system in this part of IS0 8630 may have been rounded off and therefore are consistent with, but not exactly equal to, each
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