40 'Form feed.
50 LPRINT CHR$(12) ;
Before you run the program, turn your printer off and adjust
the paper so that the top of the sheet is even with the top of the
ribbon guide on the print head, then turn the printer back on.
If you don’t remember how to do this, review Chapter 2. When
you run the program, the results will look like this:
0 ’
- L - - - - - - - - --
0
Line number 1.
Line number 2.
0
0
0 j
-i---------
O I
Line number 3.
, Line number 4.
O 1
I
0 /
The form feed (CHR$(12)) in line 50 caused the printer to
move to the top of a new page before printing the last two lines.
A note to TRS-80 users: CHR$(12) is a problem code for the
TRS-80. To send a form feed command to SR-IO/l5 you must
add 128 to it making it CHR$( 140). Use CHR$( 140) where we
use CHR$(12) in these programs.
n Reverse form feed
Just as SR-lo/15 can perform a reverse line feed, it can do a
reverse form feed. This code moves the paper so that the print
head is positioned at the top of the current page. This can be
used, for example, to print text in a multi-column magazine
format; print the first column, then reverse form feed back to
the top of the page to start the second column. The code for
reverse form feed is easy to remember: < ESC > < FF > .
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