Commodore VIC-20 - NEW

356 The VIC 20 User Guide
When a LOAD statement accessing a cassette unit is executed in
program mode, LOAD message displays are suppressed unless the tape
PLAY key is up (off). If the PLAY key is off, the PRESS PLAY ON TAPE#l
message is displayed so that the load can proceed. All LOAD messages are
suppressed when loading programs from a diskette in program mode.
NEW
The NEW statement clears the current program from memory.
Format:
NEW
When a NEW statement is executed, all variables are initialized to zero
or null values and array variable space in memory
is released. The pointers
that keep track of program statements are reinitialized, which has the effect
of deleting any program in memory; in fact the program is not physically
deleted. NEW operations are automatically performed when a LOAD
statement
is executed.
If there is a program in memory, you should execute a NEW statement
in immediate mode before entering a new program
at the keyboard. Other-
wise, the new program will overlay the old one, replacing lines if their
numbers are duplicated, but leaving other lines. The result
is a scrambled
mixture
of two unrelated programs.
Example:
NEW
NEW is always executed in immediate mode. If a NEW statement is
executed from within a program, the program will "self-destruct," or clear
itself out.
NEW (DOS Command)
Use PRINT# to prepare and format a new diskette or to erase and
reformat
an old diskette.
Format:
PRINT#lf,"N[EW]dr:disk name, vv"
The diskette in drive dr is prepared. When a diskette is prepared, sectors
are laid
out on the diskette surface. The diskette directory and Block