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116
Radix User's Manual
a user-defined character.
But the Radix has room for 189
n, =
Descender
Width
16
32
64
n2 = Descender l 16 + Width
Format:
Esc'ln,n2m,.
m,,
Figure 11-B. Add the values of the dots in each column and write the sum of eacl
column at the bottom.
-.
-
._
download characters-how does it know which user-defined char-
acter we want to print? Exactly the same way it knows which
standard character we want to print: every character is assigned a
unique number.
The standard characters are assigned the ASCII codes-num-
bers from 0 to 255. For the download character sets there are two
banks of characters that can be defined: values from 33 to 126 and
-
160 to 254. 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 (for instance, if you had assigned your character a
code of 66, it would print each time you sent a character "B" to the
printer). You can also access the character from a BASIC program
with the CHR$ function-in this case LPRINT CHR$(66) would
print the character.
Except for the limitation that download characters must be
assigned vahres in the range of 33 to 126 or 160 to 254, there are no
rules or restrictions on the use of numbers. This means you can
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