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codes are listed in two formats, labeled decimal and hexa-
decimal. Be sure to use the form your software instructions
tell you to
use.
Remember, your software may notlet your OKIDATA 120
do everything it's capable
of.
You may not be able to turn
a feature on and off in the middle of a line, for example, or
you may only be able to print an entire file using a particu-
lar feature.
PROGRAMMING ON YOUR OWN
In addition to printing with commercial software, you can
also write your own programs for the OKIDATA 120, con-
trolling all the printing features directly. Many Commodore
computer owners won't have to read this section. It ex-
plains the programming codes used by your printer. If you
don't plan on writing programs, skip this section for now.
You may need it later if you plan to write programs or if
you have software that requires you to enter printer codes.
We'll explain how to program your printer, and show you
some examples in BASIC. You will, however, need at least
a little knowledge of programming in order to do some-
thing useful. For more details on programming, see your
computer's Owner's Guide or Programmer's Reference
Guide. There are also a number of books available that
teach BASIC.
To start printing with Commodore BASIC, you'll need these
three statements:
OPEN 1
A,O
PRINT#l,
CLOSE1
The statements above are the ones any program needs in
order to control the printer. Let's look at them one at a
time:
• The OPEN statement opens a line of communication
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