Commodore 128 System Manual page 15

OVERVIEW OF THE COMMODORE C 128 PERSONAL
COMPUTER
The Commodore 128 Personal Computer offers three primary
operating modes:
* C128 Mode
* C64 Mode
* CP/M Mode
C128 Mode
ln C128 Mode, the Commodore 128 Personal Computer provides
access to 128K of RAM and a powerful extended BASIC
language known as BASIC 7.0. BASIC 7.0 offers over 140
commands, statements and functions. C128 Mode also provides
both 40 and 80 column output and full use of the 92-key
keyboard. A built-in machine language monitor allows you to
create and debug your own machine language programs, ln
C128 Mode you can use a number of new peripheral devices
from Commodore, including a new fast serial disk drive (the
1571), a mouse, and a 40/80 column composite video/RGBI
monitor (the 1901). You can also use all standard Commodore
serial peripherals.
C64 Mode
ln C64 Mode, the Commodore 128 operates exactly like a
Commodore 64 computer, allowing you to take full advantage of
the wide range of available C64 software. You also have full
compatibility with all C64 peripherals.
C64 Mode provides the BASIC 2.0 language, 40 column output
and access to 64K of RAM.
C P /M Mode
ln CP/M Mode, an onboard Z80 microprocessor gives you all the
capabilities of Digital Research's CP/M Plus version 3.0, plus
several new capabilities added by Commodore. The Commodore
128's CP/M package, called CP/M Plus, provides 128K of RAM,
40 and 80 column output, access to the full keyboard, including
the numeric keypad and special keys, and access to the new
Commodore 1571 fast serial disk drive as well as standard serial
peripherals.
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