Mhz Operation; The Fast And Slow Commands; Keys Unique To C128 Mode; Function Keys - Commodore 128D User Manual

2 MHz
Operation
Keys Unique To
C128 Mode
i \
\ \
, \
The FAST and SLOW Commands
The 2 MHz operating mode allows you to run non-graphic programs
in 80-column format at twice the normal speed. You can switch nor
mal and fast operation by using the FAST and SLOW commands.
The FAST command places the Commodore in 2 MHz mode. The
format of this command is:
FAST
The SLOW command returns the Commodore 128 to 1 MHz mode.
The default speed for the Commodore 128 microprocessor (8502) is
1 MHz. The format of this command is:
SLOW
Function Keys
The four keys on the Commodore 128 keyboard on the right side
above the numeric keypad are special function keys that let you save
time by performing repetitive tasks with the stroke of just one key.
The first key reads F1/F2, the second F3/F4, the third F5/F6, and the
last F7/F8. You can use functions keys'1,3,5,7 by pressing the key
by itself. To use function keys 2,4,6 and 8, press SHIFT along with
the function key.
Here are the standard functions for each key:
F1
GRAPHIC
F5
DSAVE"
F2
DLOAD"
F6
RUN
F3
DIRECTORY
F7
LIST
F4
SCNCLR
F8
MONITOR
Here's what each function involves;
KEY 1 enters one of the GRAPHICS modes when you supply
the number of the graphics area and press RETURN.
The GRAPHICS command is necessary for giving graph
ics commands such as CIRCLE or PAINT. For more on
GRAPHICS, see Section 6.
KEY 2 prints DLOAD " on the screen. All you do is enter the
program name and end quotes and hit RETURN to load
a program from disk, instead of typing out DLOAD your
self.
KEY 3 lists a DIRECTORY of files on the disk in the disk drive.
KEY 4 clears the screen using the SCNCLR command.
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USING C128 MODE—Some BASIC Commands and Keyboard Operations Unique to
C128 Mode