Lake Erie Systems 8900 Series, Technical Reference Manual

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IBM Proprinter XL Emulation 7-21
m1 data byte, bit 0 is least significant
bits 0 and 1 =
00 current character height
01 standard character height
10 double character height
11 current character height
bits 2 and 3 = XX don’t care
bits 4 and 5 = 00 current line spacing
01 single line spacing
10 double line spacing
11 current line spacing
bits 6 and 7 = XX don’t care
m2 data byte, bit 0 is least significant
bits 0 and 1 =
00 current character width
01 standard character width
10 double character width
11 current character width
bits 2 through 7 = XX don’t care
Raster Graphics Commands
The graphics feature provides commands that enable you to design
your own images in any shape you desire. These commands allow
you to create and adjust the density of various lines and patterns in
various combinations.
Note: The allowed ranges of n1 and n2 in the following commands
are determined by the line length and limited by the width of the
installed paper.
To find the values of n1 and n2 for any of the following commands,
modify the procedure described for the Select 60 dpi Graphics
command in Chapter 4. In step 1 of the procedure, substitute the
appropriate dot density value for 60.