Printer Functions - Custom Audio Electronics DP24-42BA User Manual

PRINTER FUNCTIONS

Writing modes
The DP24-42B printer has two writing modes, selected by the control characters: NORMAL and
REVERSE.
The base matrix of the characters is 6 x 10 dots. Characters can be printed in various formats.
Graphics
Sizes of the graphics dot and of the number of dots per line vary in accordance with the number of
columns and are shown in Table 1.
To print in graphics mode you must give the command $11 at the beginning of each line.
The format of the lines in graphics configuration is as follows:
X R P6 P5 P4
D7 D6 D5 D4
where:
X is not used;
R must be fixed at level 1;
P1,..., P6 are the graphic dots data (1 printing, 0 non printing).
The bit P6 of the dots string transmitted is printed on the left and the others that follow (P5, P4, P3, P2,
P1) towards the right as shown:
1st byte —>
P6 P5 P4 P3 P2 P1
To print a line of dots you must transmit:
$11, N x $7F (where N is the number of characters per line), $0D.
To print an empty line you must transmit:
$11, $40, $0D.
P3 P2P1
D3 D2 D1 D0
2nd byte —>
P6 P5 P4 P3 P2 P1
10
3rd byte —>
P6 P5 P4 P3 P2 P1
DP 24/42 BA