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Special Graphics Character Set
The LX-90 printer's Read Only Memory (ROM) also contains the
32 graphics characters that you see in Figure 5-1.
Undoubtedly you can think of uses for many of the shapes and
symbols available in this set, and you can combine the line graphics
characters (the ones on the first row) to form various sizes and shapes
of boxes and other figures that use straight lines.
To print these graphics characters you must use either a program-
ming language or a computer with a graphics shift or other special key
that allows you to send graphics codes.
Sending the codes for these characters to the printer is a two-step
process just as it is for the international characters. In BASIC, first you
send CHR$(27)"m"CHR$(4) to turn on the graphics character set,
then you send the code numbers given in Figure 5-l. After you have
used the ESCape code to turn on the graphics character set, the LX-90
prints the codes from 128 through 159 as graphics characters.
34
Figure 5-l. Special graphics characters
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