2. Basics

Table 2.1 Definition of terms

Terminology	Meaning
CD buffer	A buffer that stores data read from a CD in units of sectors. There is capacity for 200 sectors.
DOS file	file on IBM-PC accessible via SCSI interface. Can be used in the debug library.
Memory file	File placed on SIMM. It can be used with the debugging library .
Access pointer	The position (unit: sector) to access the file.
Current directory	Directory referenced when opening a file.
Debug file	A generic term for DOS and memory files.
Buffer partition	CD buffer divided into multiple logical partitions. Each buffer file is exclusively used for each opened file.
file identifier	Order number within the directory to identify the file. Takes values ​​from 0 to (number of directory records minus 1) However, , where 0 is your directory and 1 is the parent directory.
Frame address (FAD)	The absolute time 00:00:00 on the CD is set to 0. Numbered consecutively. There is a one-to-one correspondence with absolute time. The CD is accessed using the frame address instead of absolute time as a key.
Main processing	A series of processing starting from CPU reset. Term for interrupt processing.
Interrupt processing	Process triggered by an interrupt. term for main processing.