APPENDIX ~ EBCDIC ~ EXTENDED BINARY-CODED-DECIMAl INTER­ CHANGE CODE (EBCDIC) The 256-position EBCDIC table shows
graphic-character, control-character,
and formatting-character representations
for EBCDIC. The bit-position numbers,
bit patterns, hexadecimal represent­
ations, and card-hole patterns for these
and other possible EBCDIC characters are
also shown.
To find the card-hole pattern for most
characters, partition the table into
four blocks, as follows:
1 3
2 4
Block 1 : Zone punches at top of table; digit punches at left
Block 2: Zone punches at bottom of table; digit punches at left
Block 3 : Zone punches at top of table;
digit punches at right
Block 4 : Zone punches at bottom of
table; digit punches at right
Fifteen positions in the table are
exceptions to the above arrangement.
Each such position is indicated by a
circled number in the upper right corner
of the box for that position. The
card-hole patterns for these positions
are shown beneath the table.
Bit-position numbers, bit patterns, and
hexadecimal representations for these
positions are found in the usual manner.
Appendix G. EBCDIC Chart G-l

The EBCDIC table shows 94 graphic· character positions. Some products have
used an 88-character, 63-character, or
62-character subset of these graphic
characters.
The 94-character set consists of all
graphic characters shown in the EBCDIC
table. This character set can be used
for interchange with other systems;
those systems may use codes, other than
EBCDIC, which have 94 graphic
characters.
An 88-character set, that has been used
consists of the 94-character set with
the graphic characters at 6A, 79, AI, CO, DO, and EO hex omitted. This char­
acter set has been used for 44-key
keyboard applications which require both
uppercase and lowercase alphabetic char­
acters.
A 63-character set that has been used
consists of the---94-character set with
the lowercase alphabetic characters
omitted and with the graphic characters
at 6A, 79, AI, CO, and DO hex omitted.
This character set has been used for
interchange with other systems; those
systems may have used codes, other than
EBCDIC, which have 63 graphic
characters. A 62-character set that has been used
consists of the 63-character set with
the graphic character at EO hex omitted.
This character set has been used for
44-key keyboard applications which do
not require lowercase alphabetic charac­
ters.
Character
SEL
%
R
a
G-2 System/370 Principles of Operation
Thirteen positions (4A, 4F, SA, 5B, SF,
6A, 79, 7B, 7C, AI, CO, DO, and EO hex)
are defined in the table as Data Proc­
essing National Use positions. Each
such position contains a shaded triangle
in the top left corner of the box for
that position. The graphic characters
provided in these positions on printing
and display devices may differ from one
language to another or from one country
to another. The characters provided for
use in data-processing applications by
the English (U.S.) version of EBCDIC are
shown in the table.
The other graphic characters shown in
the EBCDIC table are provided for data­
processing applications in the English
(U.S.) version of EBCDIC and in addi­
tional versions of EBCDIC in other
languages which use a latin-based alpha­
bet. Products designed for data­
processing applications in a language
which does not use a Latin-based alpha­
bet support character sets meeting the
particular requirements of that
language.
Word-processing products normally
support a character set slightly differ­ ent from the one shown in the table.
Additionally, a number of application
areas (such as printing and publishing,
magnetic-ink character recognition, and
some programming languages) also require
unique character-set support.
Some examples of the use of the EBCDIC
table are shown in the following figure:
Type
Control Character
Special Graphic
Upper Case
Lower Case
Control Character,
function not yet
assigned
Bit Pattern 00000100 01 101100 11 01 1001 10000001 00 11 0000 - ..J ..
Bit Positions 01 234567
Hex Hole Pattern
Zone Punches I Digit Punches 04 12-9
1
-4 6C 0 1 - 8 -4
09 111- 9
81 12 - 01- 1 ' 30 12 - 11 - 0 - 91- 8 - 1 I 1