File system library 
 
 1. Overview 
 This section describes the library for accessing files on the CD. 

 
 1.1 Features 
 This library has the following features. 

 
 (1) Target CD-ROM 
 (a) ISO9660 level file access is possible.
(b) Access using CD-ROM XA sub-header information is not covered by this library. 

 
 (2) Data buffering 
 (a) Access is based on the CD block buffer management mechanism.
(b) In addition to simple file reading, prefetching using a buffer is possible. 

 
 (3) File identifier 
 (a) Access is basically based on the file identifier (sequence number in the directory).
(b) Eliminates speed degradation due to directory searches. >
(c) Access by file name is possible by using the conversion function from file name to file identifier. 

 
 (4) Development support function 
 (a) Memory file and DOS file can be accessed as a development support function.
(b) If it is a small amount of data, the file on the CD can be replaced with a memory file.
(c) DOS files on IBM-PC can be accessed in the same way as memory files via SCSI.
   You can replace files on a CD even with data that does not fit in SIMM.
(d) Two types of libraries are provided, one for product integration and one with development support functions.