Chapter 16
Combining User-Defined Characters
In this chapter we’ll explore the technique of combining user-
defined characters to make large letters and symbols.
Large Letters: Double Wide
We’ll start by placing two characters next to each other to form a
double-width letter. Enter this new program, being careful to enter the
line numbers as written.
NEW
20 LPRINT CHR$(27)"
:"CHR$(0)CHR$(0)CHR$(0);
25 'Copies ROM to RAM
30
LPRINT CHR$(27)"%"CHR$(1)CHR$(0); 'Activates RAM
60
LPRINT CHR$(27)"&"CHR$(0)"AB";
65
'Defines characters A & B
70 FOR Y=1 TO 2: LPRINT CHR$(139); 'Attribute byte
80
FOR
x=1 TO 11: RE
A
D N: LPRINT CHR$(N);:
NEXT
x
90
NEXT Y
180 LPRINT CHR$(27)"@";: END
The ESCape sequences in line 20, 30, and 60 are the commands from
the last chapter. This program prepares the printer to define the two
characters A and B. Enter the DATA lines:
200 DATA 0,2,5,0,11,16,3,32,70,0,84
210 DATA 68,32,66,49,8,21,14,5,2,0,0
And how do they look side by side? Enter:
100 LPRINT "AB"
215
