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PROGRAMMER'S GUIDE

DISC format standard specifications


Introduction

DISC format overview

■Features
■Disc size and recording time
■Linear speed and track pitch
■Disk format
■Track layout
■Sector structure
■ISO9660 compliant

DISC physical format

■Region division within the disk and arrangement of each area
■Track layout of the program area (Program Area)
    ●Track number
    ●Pause between tracks
    ●CD-DA track
    ●Program area recording range
■Key to specify location on disk
    ●Logical sector number (LSN)
    ●Frame address (FAD)
■Sector structure
■Header field
■Subheader field
    ●File number
    ●Channel number
    ●Sub mode
    ●Coding information
    ●Empty sector information

DISC logical format

■Summary
■Volume/file structure
    ●Summary
    ●Symbols representing data types
■Volume Descriptor Set
    ●Boot record
    ●Primary Volume Descriptor
    ●Supplementary Volume Descriptor
■Directory
    ●Format of recording date and time
    ●File flag
    ●File identification
    ●System information
    ●Attribute bit
■Pass table
■User file
■Others
    ●Directory structure
    ●Multi volume
    ●Multi-session

boot system

■System area
■SYSTEM ID
■Explanation of SYSTEM ID (description principles)
    ●Available characters
    ●Fill in
    ●Definition of expression
    ●Other regulations
■Explanation of each item
■Security code
■Area code
■Application initial program
■Read-ahead file and application initial program
■1st READ FILE
■Application initial program
■How to create IP
    ●SYS_ID.SRC
    ●SYS_SEC.OBJ
    ●SYS_ARE?.OBJ
    ●SYS_INIT.OBJ
■IP placement

appendix

Appendix A Various sample lists - 1
Appendix A Various sample lists - 2
Appendix A Various sample lists - 3
Appendix B Volume Descriptor

PROGRAMMER'S GUIDE
Copyright SEGA ENTERPRISES, LTD., 1997