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96
create proportional
width characters
that print at draft speed.
When defining draft characters,
the number
of printed col-
umns (ml) cannot exceed 9, and the sum of m0 + ml + m2 can
not exceed 12.
n Assigning a value to your character
We've done a pretty through job of designing and describing a
user-defined
character.
But this printer
has room for 128
download
characters
-
how does it knows
which standard
character we want to print: every character is assigned a unique
number.
The standard
characters
are assigned
the ASCII code -
numbers from 0 to 255. For the download character sets you can
define any positions between 0 to 127. This means that once a
character
is defined and assigned
a value (and the download
character
set is selected),
you can use that character
on the
printer the same way you would any standard
character.
You
can send the character with the same ASCII value. You can also
access the character
from a BASIC program
with the CHR$
function.
The entire range of ASCII codes (from 0 to 127) can be used
.,
123456769
ASCIICO~~:
64
L9ftspa.x:
1
Riohtspace:
2
Data
1st: 1.244. A
2nd: 6.
8,
(6.
3rd:
fJ.l@I,d.
4th: A
1. 6.
5th: 2c.
9'7.128
6th:
@.p.@.
123456769
ASCII code:
62
Figure
8-8. Character
designs
for the two graph symbols.
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