IBM 5100 Maintenance Information Manual page 44

COMMUNICATIONS CODE CHARTS
The communications code charts show the EBCD and cor-
respondence code data, function, and control characters
that are used with the communications feature. Use these
charts to determine the bit values of the characters on the
transmit data and receive data lines and determine what the
graphics indicate that appear in the diagnostic buffer.
Code Chart of Function and Control Characters (For Both EBCD and Correspondence Code)
Character in
Communications
Diagnostic
Bit Value
Buffer B A 8 4 2 1 C Meaning
< 8
4
2
Upper shift
= 8
4
2 1 C
©
@
B
8
4 1
C New line
-
n B 8
4
2 C Backspace These characters can be
c B A 8 4 1
. Tab
received and transmitted.
::;
B A 8 4 2
Lower shift
1
8 2 1
@),
Blank Space
-}
8 4
C
Punch on
t 8
4
1 Reader stop
A
A 8
4
2 C EOB
..
A 8 4 2 1 Prefix These characters are received,
U
B A 8 4
C
Punch off but are ignored. They cannot
+ B A 8
4
2 1 C DEL be transmitted.
\ A 1
C
Invalid idle
-
B Invalid idle
...
B A C Invalid idle
~
B
8
4
2
1
Valid idle
w
A 8
4
Bypass
I
These characters are received
;It
A 8 4 1
C
Line feed
I
and used. They cannot be
::>
B
8 4
Restore transmitted.
-
Receive parity error
-
...
-
Receive stop bit error
~
Indicates a transmit long space
lThis character can also indicate a
1
or) data character in the diagnostic buffer when using EBCD or a 9 or'" data
character when using correspondence code.
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