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Programming6–12
Bit Image Mode, Quadruple Density
ASCII Hex Decimal
P–Series N/A N/A N/A
Serial ESC Z
1B 5A
27 90
Purpose
Selects Quadruple Density Bit Image graphics.
Expression CHR$(27);”Z”;CHR$(n1);CHR$(n2);”DATA”
where n1 + 256 n2 define the number of data bytes to follow.
DATA = ASCII characters for the dot pattern bytes.
NOTE:
The DA
T
A can be
expr
essed in a CHR$(DA
T
A) format with the appr
opriate decimal
values
of the ASCII characters supplied,
especially in cases wher
e the dot patterns of non
-
printable
characters ar
e r
equired.
Comment Quadruple Density printing may reduce print speed to half. For detailed informa-
tion, refer to the Bit Image section in the Graphics chapter.
The
printed density in this mode is 120 dpi
horizontal and 72 dpi vertical when se
-
lected
from the Data Processing print mode or 180 dpi
horizontal and 96 dpi vertical
when selected from the Correspondence print mode.
Example The
following example produces quadruple density graphics of the pattern used in
the
Single Density Bit Image Mode example. Note that the amount of data must be
quadrupled for quadruple density (the data is used 108 times rather than 27).
NOTE: Depending on the host computer system, it may be necessary to include a width
statement within the BASIC program.