Star Micronics NB-15 user manual 10 ’ Uni-directional printing 20 LPRINT CHR$27“A”CHR$6

,

L

Try this program to see the difference that printing in one direction makes.

10 ’ Uni-directional printing

20LPRINT CHR$(27);“A”;CHR$(6);

30LPRINT CHR$(27) ;“2”;

40FOR I=1 TO 10

50LPRINT ” I ”

60NEXT I

70 LPRINT :LPRINT

80LPRINT CHR$(27) ;“Ul”;

90 FOR I=1 TO 10

100 LPRINT “I ”

110 NEXT I

120 LPRINT CHR$(12);CHR$(27);“@”

Here is what you will get. The top line is printed bi-directional- ly, and the bottom is printed uni-directionally. You will have to look hard because there isn’t much difference.

Let’s analyze the program. Line 20 defines the line spacing to 6/60 of an inch so that the characters that we print will touch top to bottom, and line 30 activates the definition. Lines 40 - 60 print 10 vertical line characters. Then line 80 sets one-direction printing and the vertical lines are printed again. Finally line 120 sends a form feed to advance the paper to the top of a new page, and then uses the master reset to restore the printer to the