Printronix P9000 Series - Manual (Page 110)

Programming 6-12
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$(n2);”DATA”
where n1 + 256 n2 define the number of data bytes to follow.
DATA = ASCII characters for the dot pattern bytes.
NOTE: The DATA can be expressed in a CHR$(DATA) format with the appropriate
decimal values of the ASCII characters supplied especially in cases where the dot patĆ
terns of nonprintable characters are required.
Comment Quadruple Density printing may reduce print speed to half. For detailed inĆ
formation, 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
selected 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.