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104
.,
430 LPR1NT CHii$(27) ; “%0”
440 I-,FRIN’r (;tih+$(27);
“so’”;
4!50 LPRINr CHR.$(9) ;
“MILLIONS OF DOLLARS”
460 LPRINT CHR$(27) ; “T’”
470 END
DEFINING PROPORTIONALCHARACTERS
Defining proportional characters uses the same process as
above, except that we add additional information. Being able to
specify the width of the character allows you to specify the
precise area inside the grid that the character will occupy, so
that narrow characters will look attractive next to wide ones.
The additional information is carried in the attribute byte,
mO. The first bit carries the descender data, the next three
bits specify the starting column (acceptable values are Oto 7),
and the last four bits specify the last print column, including
space when desired.
minimum character
range.
Acceptable values are from 4 and 11. The
width is five dots, anywhere within the
DESIGNING YOUR OWN NLQ CHARACTERS
As you have probably noticed, NLQ characters are printed by
two passes of the print head. Half of the character is printed on
the first pass, and the remainder on the second pass. The paper
is rolled up half a dot height in between passes to let the print
head print dots on the second pass that overlap the previous
dots, in order to fill in the spaces and produce denser characters.
Additionally, the print head speed is halved, and the dots are
printed at double the density of draft characters. For this