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APA GRAPHICS
With APA (All-Points Addressable) graphics, you can "draw"
almost any kind of illustration with your printer. The easiest
way is to use a graphic software package which creates an
image on your display screen and "dumps" it onto the page.
A growing number of these packages will work well with
your MICROLINE; when you run the "setup" part of your
package, look for something like "OKI DATA ML92" OR
"ML93" on the printer menu.
If you have an Apple or Apple-compatible computer, we
recommend OKIGRAPH II™
-
a special package that lets
you print the Apple screen easily. See your dealer for more
information.
This section tells you how to program graphic images "by
hand." Once you understand the fundamentals, the results
you can get will be limited only by your imagination.
Programming Graphics
This control code turns on the printer's graphic mode
:
ETX
CHR$(3)
03 (hex)
-
Enters graphic mode
In this mode, when you send an ASCII code to the printer,
instead of printing a letter or number (or doing something
like changing character size), it will print a pattern of dots
in a single column. This continues until the printer receives
this control code:
ETX STX
CH R$ (3) ;CH R$ (2)
-
Exits graphic mode
03 02 (hex)
Let's try it once to see what's going on. Check the ASCII
code chart and you'll see that the ASCII code for "A" is
65. Try this program
:
10 LPRINT CHR$(65)
20 LPRI NT CH R$(3) ;CH R$ (65) ;CHR$(3) ;CH R$(2)
This is what should happen when you RUN the program
:
A
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