• Chapter 3 describes the use
of
the BASIC 7.0 disk commands with the Commo-
dore 128.
• Chapter 4 describes the use
of
the DOS Shell program, which provides you with a
convenient alternative way to execute disk drive commands. The DOS Shell
is
included on the
1571
test/demo diskette supplied with your disk drive.
PART TWO: ADVANCED OPERATION AND
PROGRAMMING-is
primarily
intended for users familiar with computer programming.
PART
TWO
is
subdivided
into six chapters:
• Chapter 5 discusses the concept
of
data files, defines sequential data files, and
describes how sequential data files are created and used on disk.
• Chapter 6 defines the differences between
sequential and relative data files, and
describes how relative data files
are
created and used on disk.
• Chapter 7 describes direct access disk commands
as
a tool for advanced users and
illustrates their use.
• Chapter 8 centers on internal disk commands. Before using these advanced
commands, you should know how to program a 6502 chip
in
machine language
and have access to a good memory map of the 1571.
• Chapter 9 provides a list
of
disk-related kernal ROM subroutines and gives a
practical example
of
their use in a program.
• Chapter
10
gives information
on
high-speed burst commands.
APPENDICES A THROUGH
G-provide
various reference information; for example,
Appendix A tells you how to set the device number through use
of
two switches
on
the
back
of
the drive.
2
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