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characters (m0, ml and m2) are used to specify the width of the
character and the space to be allowed on either side of it. The
left space (in dot column) is specified by m0 and the right space
is specified by m2. The second byte (ml) specifies the number
of columns of dots that will be printed by the character. By vary-
ing the width of the character itself and the spaces around it,
you can actually create proportional width characters.
You’ll probably recognize dl d2 . . . dx from the top of our
layout grid. That’s right, each column is described by three
bytes. Now we’ve got everything we need to download one
character to the printer. The complete command for our car
character with the Standard mode is shown below:
Now let’s send the information to the printer. The following
program will send the character definitions for all two
characters to the printer. Before you enter the program, turn off
the printer and set the DIP switch 2-3 off. Otherwise, your
printer will ignore your download definitions.
After you set the DIP switch correctly, enter the program and
run it.
10 LPRINT CHR$(27);"xO";
20 LPRINT CHR$(27);"&";CHR$(O)
30 FOR N=60 TO 61
40 FOR M=l TO 30
5oREADMM
60 LPRINT CHR$(MM);
70 NEXT M
80 NEXT N
90 LPRINT
100 END
110 DATA 1, 9, 2,
1,240,
100, 0
0, 6, 8, 0, 8,