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A
PPENDIX
B.
QTERM C
HARACTER
C
HART
The chart on the next page shows how the QTERM
responds to each of the 256 possible values of characters
which it can receive.
Where a dot pattern is shown, sending the corresponding
code will cause the QTERM to display the dot pattern at the
current cursor location.
Numbers in circles refer to these notes:
❶
These bytes are always ignored. They cannot be used
for remapping custom characters.
❷
These bytes are normally ignored but may be used for
remapping custom characters if desired.
❸
This is a space character.
Custom characters, and the codes to which they are
assigned, are defined in the QDATA file (see Chapter 3).
The following restrictions apply to assigning the codes:
•
Custom characters may not be mapped to any code
from 07h through 1Bh (inclusive). This includes the
❶
bytes as well as the control codes which are used by
the QTERM.
•
Custom characters may be mapped to any other code,
i.e. 00h through 06h and 1Ch through FFh.
•
The characters shown in the chart from 00h through
06h and at 1Ch are the default custom character defini-
tions. You may change the character dot patterns and
map them to different codes using the QDATA setup
file.
Other notations in the chart are:
BEL
bell (beep) command
BS
backspace
HT
horizontal tab
LF
line feed
CR
carriage return
XON
XON character
XOFF
XOFF character
ESC
escape character
DEL
delete character
Note that, although the left half of this chart is similar to the
ASCII chart in Appendix A, there are differences.