AS 3714-1989

1 - AS 3714-1989 DATA STORAGE AND TRANSFER MEDIA-VOLUME AND FILE STRUCTURE OF FLEXIBLE DISK CARTRIDGES (DISKETTES) FOR INFORMATIO
4 - PREFACE
5 - Contents
9 - Section one: General
9 - 0 Introduction
9 - 1 Scope and field of application
10 - 2 Conformance
10 - 2.1 Conformance of a flexible disk cartridge
10 - 2.2 Conformance of an information processing system
10 - 3 References
10 - 4 Definitions
10 - 4.1 byte
10 - 4.2 data field of a sector
10 - 4.3 data interchange standard
10 - 4.4 defective sector
10 - 4.5 descriptor
10 - 4.6 file
10 - 4.7 formatting
10 - 4.8 implementation
10 - 4.9 initialization
10 - 4.10 originating system
11 - 4.11 receiving system
11 - 4.12 sector
11 - 4.13 track
11 - 4.14 user
11 - 4.15 fixed-length record
11 - 4.16 record
11 - 4.17 segment
11 - 4.18 segmented record
11 - 4.19 variable-length record
11 - 5 Notations
11 - 5.1 Decimal and hexadecimal notations
11 - 5.2 Other notations
11 - 5.3 Capital letters
11 - Section two: Requirements for the medium
11 - 6 Volume structure
11 - 6.1 Arrangement of data on a flexible disk cartridge
12 - 6.2 Arrangement of the Data Area
13 - 6.3 Arrangement of the System Area
13 - 6.4 Files
14 - 6.5 Sub-directories
14 - 7 Contents of a file
14 - 8 Recording of descriptor fields
14 - 8.1 Numerical values in one-byte fields
14 - 8.2 Numerical values in two-byte fields
14 - 8.3 Numerical values in four-byte fields
14 - 8.4 Pairs of 12-bit integers
14 - 8.5 Character set and coding
15 - 8.6 Justification of characters
15 - 9 FDC Descriptor
15 - 9.1 FDC Descriptor layout
15 - 9.2 FDC Descriptor fields
15 - 9.2.1 Field reserved for system use (BP 1 to 3)
15 - 9.2.2 Creating System Identifier (BP 4 to 11)
15 - 9.2.3 Sector Size (BP 12 and 13)
15 - 9.2.4 Sectors per Cluster (BP 14)
15 - 9.2.5 Reserved Sector Count (BP 15 and 16)
15 - 9.2.6 Number of FATs (BP 17)
15 - 9.2.7 Root Directory Entries (BP 18 and 19)
15 - 9.2.8 Total Sectors (BP 20 and 21)
15 - 9.2.9 Medium Identifier (BP 22)
15 - 9.2.10 Sectors per FAT (BP 23 and 24)
16 - 9.2.11 Sectors per Track (BP 25 and 26)
16 - 9.2.12 Number of Sides (BP 27 and 28)
16 - 9.2.13 Field reserved for future standardization (BP 29 and 30)
16 - 9.2.14 Field reserved for system use (BP 31 to 512)
16 - 10 File Allocation Table
16 - 10.1 Format Identifier
16 - 10.2 FAT entries
16 - 10.2.1 FAT entry size
16 - 10.2.2 Number of FAT entries
16 - 10.2.3 FAT entry values
16 - 10.2.4 Maximum Cluster Number (MAX)
16 - 10.3 Number of sectors in each FAT
17 - 10.4 Recorded form of the FAT
17 - 11 File directories
17 - 11.1 Characteristics
17 - 11.2 Directory entry types
17 - 11.3 General definition of Directory Entry fields
17 - 11.3.1 Name (BP 1 to 8)
17 - 11.3.2 Name Extension (BP 9 to 11)
17 - 11.3.3 Attributes (BP 12)
18 - 11.3.4 Reserved Field (BP 13 to 22)
18 - 11.3.5 Time Recorded (BP 23 and 24)
18 - 11.3.6 Date Recorded (BP 25 and 26)
18 - 11.3.7 Starting Cluster Number (BP 27 and 28)
18 - 11.3.8 File Length (BP 29 to 32)
18 - 11.4 File Entry
18 - 11.4.1 Name (BP 1 to 8)
18 - 11.4.2 Name extension (BP 9 to 11)
18 - 11.4.3 Attributes (BP 12)
18 - 11.4.4 Reserved Field (BP 13 to 22)
18 - 11.4.5 Time Recorded (BP 23 and 24)
18 - 11.4.6 Date Recorded (BP 25 and 26)
18 - 11.4.7 Starting Cluster Number (BP 27 and 28)
18 - 11.4.8 File Length (BP 29 to 32)
18 - 11.5 Volume Label Entry
18 - 11.5.1 Name and Name Extension (BP 1 to 11)
18 - 11.5.2 Attributes (BP 12)
18 - 11.5.3 Reserved Field (BP 13 to 22)
19 - 11.5.4 Time Recorded (BP 23 and 24)
19 - 11.5.5 Date Recorded (BP 25 and 26)
19 - 11.5.6 Starting Cluster Number (BP 27 and 28)
19 - 11.5.7 File length (BP 29 to 32)
19 - 11.6 Sub-directory Pointer Entry
19 - 11.6.1 Name (BP 1 to 8)
19 - 11.6.2 Name Extension (BP 9 to 11)
19 - 11.6.3 Attributes (BP 12)
19 - 11.6.4 Reserved Field (BP 13 to 22)
19 - 11.6.5 Time Recorded (BP 23 and 24)
19 - 11.6.6 Date Recorded (BP 25 and 26)
19 - 11.6.7 Starting Cluster Number (BP 27 and 28)
19 - 11.6.8 File Length (BP 29 to 32)
19 - 11.7 Sub-directory Identifier Entry
19 - 11.7.1 Name (BP 1 to 8)
19 - 11.7.2 Name Extension (BP 9 to 11)
19 - 11.7.3 Attributes (BP 12)
19 - 11.7.4 Reserved Field (BP 13 to 22)
19 - 11.7.5 Time Recorded (BP 23 and 24)
19 - 11.7.6 Date Recorded (BP 25 and 26)
19 - 11.7.7 Starting Cluster Number (BP 27 and 28)
20 - 11.7.8 File Length (BP 29 to 32)
20 - 11.8 Sub-directory Parent Pointer Entry
20 - 11.8.1 Name (BP 1 to 8)
20 - 11.8.2 Name Extension (BP 9 to 11)
20 - 11.8.3 Attributes (BP 12)
20 - 11.8.4 Reserved Field (BP 13 to 22)
20 - 11.8.5 Time Recorded (BP 23 and 24)
20 - 11.8.6 Date Recorded (BP 25 and 26)
20 - 11.8.7 Starting Cluster Number (BP 27 and 28)
20 - 11.8.8 File Length (BP 29 to 32)
20 - 11.9 Not-currently-used Entry
20 - 11.9.1 Name Field (BP 1 to 8)
20 - 11.9.2 Remaining bytes (BP 9 to 32)
20 - 11.10 Never-used Entry
20 - 11.10.1 Name Field (BP 1 to 8)
20 - 11.10.2 Remaining bytes (BP 9 to 32)
21 - Section three: Requirements for systems
21 - 12 Requirements for the description of systems
21 - 13 Requirements for an originating system
21 - 13.1 General
21 - 13.2 Files
21 - 13.3 Descriptors
21 - 14 Requirements for a receiving system
21 - 14.1 General
21 - 14.2 Files
21 - 14.3 Descriptors
22 - Section four
22 - 15 Record structure
22 - 15.1 General
22 - 15.2 Records
23 - 15.3 Attributes of record-structured files
23 - 15.4 Requirements for systems implementing section four
24 - Annex A - Parameter values for FDCs conforming to an International Standard for data interchange
25 - Annex B - Parameter values for other FDC formats
25 - B.1 Sectors per Cluster
25 - B.2 Reserved Sector Count
25 - B.3 Sectors per FAT
25 - B.4 Root Directory Entries
26 - Annex C - ISO 646 : International Reference Version (IRV)
28 - Annex D Example of volume structures and file location
28 - D.1 Sample mapping of Cluster Number to flexible disk cartridge sectors
28 - D.2 A sample File Allocation Table (FAT)
29 - D.3 Address mapping example
31 - Annex E - Index of acronyms