62
CHAPTER
4
Programming
with
BASIC
Language
The DEFM command cannot only be used in manual operation
but
can also be
used in a program.
For
example,
if
we wish
to
use array variables Z
(0)
to
Z
(20)
in a program and assign a numeric value J
to
Z (J), the program can be created
as
follows.
Example:
10
DEFM
20
··
·20
variables are expanded.
20
FOR
J=0
TO
30
Z(J)=J
40
NEXT
J
20
l
Numeric values are assigned
to
the array
variables.
*When the DEFM command
is
used in a program, the number
of
variables
wi~l
not
be displayed when executed.
The DEFM command
is
also used
to
display the current number
of
variables.
DEFM only will be executed in this instance.
I
°'""
""MO
A·
.
z:
26
M~CiEFM:
20
*When
"DEFM"
only
is
used in a program, the number
of
variables will be dis-
played when executing the program.
Notes:
1.
If
the
variables are expanded,
that
specification will be saved even when the
power
is
turned
off. Execute DEEM 0
to
return
to
the
standard
26
variables.
*The
variables will return
to
the
standard
26
if
NEW
ALL~
is
operated in
the
WRT mode or
if
changed over
to
the DIM mode.
I
"""
"'"
MO
MOM
A·
.z:26
DEFM:f1
2.
If
the number
of
bytes used
to
expand
the
variables
is
specified in excess
of
the remaining free area, a MEMORY OVER error (Error 1) will occur
to
protect
the stored programs and data.
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