Commodore 1581 - Diskette Directory; Selective Directories

ters long (including spaces), "id" can be any two characters as long as
they don't form a BASIC keyword (such as IF or ON) either on their
own or with the capital I before them. "drive#" is 0 . "device#" is 8,
unless you have changed it as per instructions in Appendix A (the 1581
assumes 8 even if you don't type it in).
The command for the C64, VIC 20, or C128 in C64 mode is this:
OPEN 15,device#,15,"NEWdrive#:diskette name,id"
CLOSE 15
The device#, drive#, diskette name, and id are the same as
described above.
The OPEN command is explained in the next chapter. For now,
just copy it as is.
-NOTE
FOR ADVANCED USERS
If you want to use variables for the diskette name or id, the
format is as follows:
C128, Plus/4: HEADER (A$),I(B$),D0
C64: OPEN 15,8,15:PRINT#15,"N0:" +A$ + "," + B$:
CLOSE15
Where:
A$ contains the diskette name (16 character limit)
B$ contains the id (2 characters long)
After you format a particular diskette, you. can reformat it at any
time. You can change its name and erase its files faster by omitting the
id number in the HEADER command.
DISKETTE DIRECTORY
A directory is a list of the files on a diskette. To view the directory
on the C128 or Plus/4, type the word DIRECTORY on a blank line and
press the RETURN key or simply press the F3 key on the C128. That
doesn't erase anything in memory, so you can call up a directory
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