CHAR subprogram
(Character definition)
CALL
CHAR(char-code, "pattern'identifier'')
The
CHAR
subprogram allows you to define your own special
graphics characters,
You
can redefine the
standard
set
of
characters
(ASCII codes 32-127) and establish additional
characters
with
codes
UM-lSY,
The
char'
code
specifies the code of the
character
you wish to define
and must be a numeric expression with a value between 32
and
159, inclusive,
If
the
character
you
are
defining is in the range 128-
159 and there
is
insufficient free memory to define the character.
the program will terminate with a "MEMORY
FULL"
error.
The
pattern'identifier
is
a 16-character
string
expression which
specifies
the
pattern
of
the
character
you
want
to
use
in
your
program.
This
string
expression is a coded representation of the 64
dots which
make
up a
character
position on the screen.
These
64
dots comprise
an
8·
by'8
grid as
ShOWli
1Jeluw.
gl
eatly enlarged.
LEFT
RIGHT
BLOCKS BLOCKS
ROW 1
ROW
2
ROW 3
ROW
4
ROW 5
ROW
6
ROW
7
ROW
8
Each
row is partitioned iuto two
1Jlul;k~
uf
fuur
L1uLs
each:
ANY ROW
Examples:
>NEW
>100
CALL
CLEAR
>110
CALL
CHAR<33,"rrrrrFFFFF
FFFFFF")
>120
CALL
COLOR(1,9,6)
>130
CALL
VCHAR(12,16,33)
>140
GOlD
140
>
RUN
--screen
clears
•
(Press
CLEAR
to
stop
the program)
II-76
LEFT
BLOCK
RIGHT
BLOCK
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