IBM 4400 Bit Image Mode, Single Density

Bell
81
Bell
ASCII Code BEL
Hex Code 07
Dec Code 7
Purpose Sounds the printer's buzzer/beeper.
Comment The BEL function sounds the buzzer/beeper for 0.2 seconds
upon receipt of this command.
Bit Image Mode, Single Density
ASCII Code ESC K n1 n2
Hex Code 1B 4B n1 n2
Dec Code 27 75 n1 n2
Purpose Selects Single (Normal) Density Bit Image graphics.
where: (
n1 +256 n2 ) define the number of data bytes to follow.
DATA =ASCII characters for the dot pattern bytes.
The DATAcan be expressed in a format with the appropriate
decimal values of the ASCII characters supplied especially in
cases where the dot patterns of nonprintable characters are
required.
Comment For detailed information, see the Bit Image section in Chapter 8.
Example The following example produces a pattern of Single Density Bit
Image graphics. The 9 data bit pattern is repeated 27 times.
Compare this example to the double density and quadruple
density examples.