Transcode (character encoding)

Transcode, or Transmission Code, was a 6-bit plus parity BCD character set which was used by IBM for a short time for Binary Synchronous communications.

Transcode was a 64 character set including twenty-six upper case alphabetic characters, ten numerics, thirteen special characters, and sixteen control characters. Characters were transmitted with odd parity.

Character	Punched card code	6-bit transcode	Hex
SOH	12-9-1	P	00
A	12-1	5	01
B	12-2	4	02
C	12-3	4 5 P	03
D	12-4	3	04
E	12-5	3   5 P	05
F	12-6	3 4   P	06
G	12-7	3  4 5	07
H	12-8	2	08
I	12-9	2     5 P	09
STX	12-0-2	2   4   P	0A
.	12-9-3	2   4 5	0B
⌑	12-9-4	2 3     P	0C
BEL	0-9-8-7	2 3   5	0D
Sub	9-8-7	2 3 4	0E
ETB	9-8-6	2 3 4 5 P	0F
&	12	1	10
J	11-1	1       5 P	11
K	11-2	1     4   P	12
L	11-3	1     4 5	13
M	11-4	1   3     P	14
N	11-5	1   3   5	15
O	11-6	1   3 4	16
P	11-7	1   3 4 5 P	17
Q	11-8	1 2       P	18
R	11-9	1 2     5	19
Space	no punch	1 2   4	1A
$	11-8-3	1 2   4 5 P	1B
*	11-8-4	1 2 3	1C
US	11-9-8-7	1 2 3   5 P	1D
EOT	9-7	1 2 3 4   P	1E
DLE	12-11-9-8-1	1 2 3 4 5	1F
-	11	0	20
/	0-1	0         5 P	21
S	0-2	0       4   P	22
T	0-3	0       4 5	23
U	0-4	0     3     P	24
V	0-5	0     3   5	25
W	0-6	0     3 4	26
X	0-7	0     3 4 5 P	27
Y	0-8	0   2       P	28
Z	0-9	0   2     5	29
ESC	9-8-7	0   2   4	2A
'	0-8-3	0   2   4 5 P	2B
%	0-8-4	0   2 3	2C
ENQ	0-9-8-5	0   2 3   5 P	2D
ETX	12-9-3	0   2 3 4   P	2E
HT	12-9-5	0   2 3 4 5	2F
0	0	0 1         P	30
1	1	0 1       5	31
2	2	0 1     4	32
3	3	0 1     4 5 P	33
4	4	0 1   3	34
5	5	0 1   3   5 P	35
6	6	0 1   3 4   P	36
7	7	0 1   3 4 5	37
8	8	0 1 2	38
9	9	0 1 2     5 P	39
SYN	9-2	0 1 2   4   P	3A
#	8-3	0 1 2   4 5	3B
@	8-4	0 1 2 3     P	3C
NAK	9-8-5	0 1 2 3   5	3D
EM	11-9-8-1	0 1 2 3 4	3E
DEL	12-9-7	0 1 2 3 4 5 P	3F

Devices using Transcode

• IBM 2780 Data Communications Terminal.