isoiec9293.pdf

INTERNATONAL
ISO/EC
STANDARD
9293
Second edition
1994-11-15
Information technology-volume and file
structure of disk cartridges for information
interchange
Technologies de /information- Volume et structure des fichiers des
cartouches a disquette pour /echange d information
SOLEC
Reference number
ISO/EC9293:1994(E
ISO/EC9293:1994(B)
Contents
g
Section 1-genera
1 St
2 Conformance
2.1 Conformance of an FDC
2.2 Conformance of an information processing system
3 Normative references
4 Definitions
4.2 data field of a sector
4.3 data interchange standard
4.4 defective sector
Scriptor
4.6 FDC
4.7lc
4.8 formatting
4. 9 implementation
4.10 initialization
4.11 ODC
4.12 originating system
4.13 receiving system
4.14 sector
4.15 physical track
4. 16 user
4.17 fixed-length record
4.18 record
4.19 segment
4.20 segmented record
4. 21 variable-length record
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Printed in Switzerland
OO/IEC
ISO/IEC9293:1994(E
5 Notations
5.1 Decimal and hexadecimal notations
5.2 Other notations
5.3 Capital letters
Section 2 - Requirements for the medium
6 Volume structure
6.1 Arrangement of data on an FDC
6.1.1 FDC parameters
6.1.2 Physical Addresses
6.1.3 Logical Sector Number
6.1.4 System Area and Data Area
6.1.5 Parameters of the Volume Structure
6.2 Arrangement of the Data Area
6.2, Clusters
6.2.2 Status of clusters
6.3 Arrangement of the System Area
6.3.1 FDC Descriptor and space for system use
6.3.2 File Allocation Table (FAT)
6.3. 3 Root Directory
6.3.4 Size of the System Area
6.4 Fie
6.4.1 File Space
6.4.2 Rclation to clusters
6.4.3 File length
6.5 Sub-directories
7 Content of a file
8 Recording of descriptor fields
8.1 Numerical values in one-byte fields
88899999
8.2 Numerical values in two-byte fields
8.3 Numerical values in four-byte fields
8.4 Pairs of 12-bit integers
8. 5 Character set and coding
8.0 Justification of characters
9 FDC Descriptor
10
'C Descriptor and Extended PDC I
9.2 FDC Descriptor and Extended FDC Descriptor fields
9. 2.1 Field reserved for system use (BP I to 3
9.2.2 Creating System Identifier(BP 4 to 11)
n11
9.2.3 Sector Size (BP 12 and 13
9.2.4 Sectors per Cluster(BP 14
9.2.5 Reserved Sector Count (BP 15 and 16