Commodore 128D - Page 193

What CP/M 3.0 Is
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-*. What You Need to
Run CP/M 3.0
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CP/M is a product of Digital Research, Inc. The version of CP/M used
on the Commodore 128 is CP/M Plus Version 3.0. In this chapter,
CP/M is generally referred to as CP/M 3.0, or simply CP/M. This chap
ter summarizes CP/M on the Commodore 128. For detailed informa
tion on CP/M 3.0, fill out and return the order form included in this
chapter.
CP/M 3.0 is a popular operating system for microcomputers. As an
operating system, CP/M 3.0 manages and supervises your comput
er's resources, including memory and disk storage, the console
(screen and keyboard), printer, and communication devices. CP/M
3.0 also manages information stored in disk files. CP/M 3.0 can copy
files from a disk to your computer's memory, or to a peripheral
device such as a printer. To do this, CP/M 3 places various programs
in memory and executes them in response to commands you enter
at your console. Once in memory, a program executes through a set
of steps that instructs your computer to perform a certain task.
You can use CP/M to create your own programs, or you can choose
from the wide variety of available CP/M 3.0 application programs.
The general hardware requirements for CP/M 3.0 are a computer
containing a Z80 microprocessor, a console consisting of a keyboard
and a display screen, and at least one floppy disk drive. For CP/M 3.0
on the Commodore 128D Personal Computer, the Z80 micro
processor is built-in; the console consists of the full Commodore 128
keyboard and an 80-column monitor; and the disk drive is the Com
modore 1571 fast disk drive. The CP/M system is packed, in disk
format, in the computer carton. The material on disk includes the
CP/M 3.0 system and an extensive HELP utility program, as well as
a number of other utility programs.
NOTE: Although CP/M can be used with a 40-column monitor, only
40 columns can be displayed at one time. To view all 80 columns of
the display, you must scroll the screen horizontally by pressing the
CONTROL key and the appropriate cursor key (left or right).
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USING CP/M MODE—lntroduction to CP/M 3.0