Epson SQ-2000, Operating Manual

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Translating the ASCII code
You may also find that different manuals and programs use
different terms for the same characters or functions. For example,
your computer manual may say to send the decimal 10 for a line
feed, while your spreadsheet program recommends a <CR> or
CTRL-J for the same thing.
Appendix B contains a conversion chart for all the common
names of the ASCII codes, and shows the relationship between
the different forms of notation. In addition, Appendix A gives a
description of all the control codes and ESCape sequences used
on the SQ-2000.
How to send control codes to printer
The short program that follows illustrates the concepts of con-
trol codes and ESCape sequences. It is written in Microsoft
BASIC, but it can be adapted to other forms of BASIC or other
programming languages. If you have specific questions about
how BASIC works, consult the program’s documentation. How
to overcome problems specific to your computer is covered in
Chapter 8.
1. Make sure that you’re in BASIC; then type the following line
just as it appears here. (Don’t forget to include all semicolons,
even the ones at the end of the lines.)
10 LPRINT "NORMAL PRINTING" CHR$(lO) CHR$(13);
2. Now press RETURN, type RUN, and press RETURN again.
The SQ-2000 prints:
NORMAL PRINTING
This line begins with a line number, 10, then the command
LPRINT. Anything that is enclosed in quotation marks after the
LPRINT command is sent to the printer.
If you check the ASCII chart in Appendix B, you’ll find that
CHR$(lO) is the control code for a
line feed,
so when the printer
receives this, it moves the paper up one line.
CHR$(13), according to the ASCII chart, is the code for carriage
return, so the print head returns to the left margin and awaits the
next command.
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