The following character definition program should help make this
clear:
100 LPRINT CHR$(27);"X";CRR$(O);
llOLPRINTCHR$(27);"&";CHR$(O);
120 LPRINT
";;";
130 LPRINT
c11~$(128);
l40FORI=lTO11
150
READ A: LPRINT CHR$(A);
160 NEXT I
170 LPRINT ";;;;;"
180 LPRINT CHR$(27);"%";CHR$(l);
190 LPRINT "ii;;;"
200LPRINTCHR$(27);"%";CHR$(O);
210 LPRINT ";;;;;"
220 END
In line
100,
the ESC x 0 command selects draft printing. The two
semicolons (;) in line 120 are n1 and n2, the range of characters
being defined (in this case, a range of one). Line 130 contains a1,
which in this case specifies to use the top eight pins of the print
head.
Line
180
selects the user-defined character set, and line
200
switches back to the normal character set. The actual character
design information (contained in the DATA statement in line
230)
is sent to the printer in the loop between lines
140
and
160.
Printing user-defined characters
If you entered the example program above, you defined a heart
and placed it in the RAM location for decimal code
59
(replacing
the semicolon). You can now print out a three-line sample of your
work. The first and third lines (printed by lines 170 and 210 of the
program) print the normal semicolon; the second line (line 190)
prints the heart that you defined.
4-24
Software and Graphics
