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,
In mode III, key
CED
toggles XON/XOFF
em
is
a
backspace key
(generates
D8H)
CEID
toggles Printer ON/OFF (spooled
output)
ill)
generates alternate characters
@
is an escape key (generates 1 BH)
@
is a control key
Toggle XON/XOFF
Press
CED
to toggle XON/XOFF.
em
Backspace Key
em
is the backspace key. Note that it will delete the last
character received from the buffer and the last character
displayed. If the last character received was not a display-
able character, the last character displayed may not
necessarily have been the last character received.
CEID
Toggle Print Spooler
Press
CEID
to toggle the print spooler On and Off. The
print spooler prints the contents of the RAM buffer,
wh ich contains the most recent data received (up to
buffer capacity) and keyboard input (if the echo protocol
is on).
The printer cannot be started during receipt of
data. You must first press
CED
(XON/XOFF) so that
the BUSY indicator is on.
Generating Special ASC II Characters
44
The following chart illustrates the various key combina-
tions that can be used to produce special characters,
rather than the ones normally associated with those keys.
The "DEG" segment will be turned on to indicate this.
Key Combination
ASCII Character Generated
ill)@
1CH (FS)
ill)
00
1DH (GS)
ill)(D
lEH (RS)
ill)
CID
1FH (VS)
ill)
CD
27H '
ill)@)
5BH [
i l l ) w
5CH \
ill) IT)
5DH ]
i l l ) w
5EH
t
ill)
CD
5FH
+-
ill)
CKJ
6DH
~
ill)
em
7BH
I
1
ill)
CD
7CH
,
I
- - - -
-
ill)
CD
7DH
I
I
ill)
CID
7EH
~
i l l ) w
7FH •
@
Escape Key
@
serves as an ESCAPE key, and when pressed
generates an ASCII lBH.
45
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