Reassigning Code - Epson Printer Interface Cartridge for the Apple IIc Operation Manual

B-inch high-speed double-density row has 960 places where the LX-90
can put a dot (dot positions), but only half of them can be used on any
one pass of the print head. Having twice as many possible dot posi-
tions enables high-speed double-density designs to have a higher reso-
lution than single-density ones even though consecutive dots are not
used.
You are familiar with the command format that uses the ESCape
code and a letter, but LX-90 graphics commands can also be in the
following format:
PRINT CHR$ (27); "*" ;CHR$ (m) ; CHR$ (n1) ;CHR$ (n2) c;
with m being the mode number found in the left column of Table 7-l.
As usual, nl and n2 reserve the number of columns for graphics. The
seven modes include six densities, with two speeds for double-density

Reassigning Code

The LX-90 has a graphics command that changes one graphics
mode to another. You can use it with many commercial graphics soft-
ware programs to change the density and shape of your printouts.
The code is ESCape "?s" n, where s is one of the four alternate graphics
codes (K, L, Y, or Z) and n is the number of the new code (O-6).
For example, if you send the following code before you run a
graphics program, it will change every instance of mode "Y"
(high-speed double-density) to mode 5 (one-to-one).
PRINT CHR$(27);"?Y";CHR$(5)
As usual, this example is in BASIC, but you can send the code in
any programming language.
Even if you don't know which code your graphics program uses, a
little experimentation should tell you whether the reassigning code can
improve your graphics printouts.
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