BS ISO/IEC 9171-2 : 90 AMD 7797

1. Scope
2. Conformance
3. Conventions and notations
4. Features common to both formats
4.1 Track Geometry
4.1.1 Track shape
41.2 Direction of rotation
4.1.3 Track pitch
4.1.4 Track number
4.2 Formatted Zone
4.3 Control tracks
4.4 Control Track PEP Zone
4.4.1 Recording in the PEP Zone
4.4.2 Cross-track loss
4.4.3 Format of the tracks of the PEP Zone
4.5 Control Track SFP Zones
4.5.1 Duplicate of the PEP information
4.5.2 Media information
4.5.3 System Information
4.5.4 Unspecified Content
4.6 Requirements for Interchange
4.6.1 Equipment for writing
4.6.2 Test equipment for reading
4.6.3 Requirements for tracking
4.6.4 Requirements for user data
4.6.5 Requirements for interchange
5. Format A
5.1 Track layout
5.1.1 Tracking
5.1.2 Characteristics of pre-recorded information
5.2 Sector Format
5.2.1 Sector Mark (SM)
5.2.2 VFO areas
5.2.3 Address Mark (AM)
5.2.4 ID fields
5.2.5 Postamble (PA)
5.2.6 Offset Detection Flag (ODF)
5.2.7 Gap
5.2.8 Flag
5.2.9 ALPC
5.2.10 Sync
5.2.11 Data field
5.2.12 Buffer
5.2.13 Recording code
5.3 Defect management
5.3.1 Media initialization
5.3.2 Write procedure
5.3.3 Layout of the User Zone
5.3.4 Disk Definition Structure (DDS)
6. Format B
6.1 Track layout
6.1.1 Servo format
6.1.2 Properties of pre-recorded signals
6.2 Data structure
6.2.1 Track format
6.2.2 Sector format
6.2.3 Error detection and correction
6.2.4 Recording method
6.2.5 Defect management
Annex A - Values to be implemented in future standards
Annex B - CRC for ID fields of Format A
Annex C - Interleave, CRC, ECC, Resync for the Data field
          of Format A
Annex D - Linear Replacement Map Defect Management (LDM)

BS AMD 7797 RENUMBERS THIS STANDARD TO BS EN 29171 PT2 Provides two formats for the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used for recording and the quality of the recorded signals.