Lake Erie Systems 8900 Series, Technical Reference Manual

Page: 106 / 224

Horizontal Motion Commands
The following paragraphs describe the commands for horizontal
motion and horizontal tab functions in the Model 855 WP emulation
mode.
Backspace
Control character: BS
Hexadecimal:
08
This command causes the printer to move the printhead one HMI
position to the left. The next character printed following a BS
command overstrikes the most recently printed character. In the
backward print mode, each BS control character moves the printhead
to the right one HMI position.
Tab Horizontally
Control character: HT
Hexadecimal:
09
This command moves the printhead to the next horizontal tab stop. If
the printer receives an HT command following the last horizontal tab
stop on a line, the printer performs a carriage return and a line feed
and starts the next print operation at the left margin.
Carriage Return
Control character: CR
Hexadecimal:
0D
This command causes the printer to perform the following functions.
q
The printer prints the current line of data from the print buffer
and begins the next line at the left margin.
q
If right margin justification is active, the CR command causes
each line of print to occupy the entire space between the left and
right margins.
TI Model 855 Printer WP Emulation 5-14