ICL Sixbit Codes

The best-known ICL computers, especially the 1900-series, had 24 bit wide memory. Using a six bit character code, four characters were happily packed into each word. This is the encoding they used. Lower-case letters were not supported but nobody cared because the hardware couldn't display them anyway.

Octal ICL Sixbit Table

__0 __1 __2 __3 __4 __5 __6 __7
0__
0
1
2
3
4
5
6
7
1__
8
9
:
;
<
=
>
?
2__
 
!
"
#
£
%
&
'
3__
(
)
*
+
,
-
.
/
4__
@
A
B
C
D
E
F
G
5__
H
I
J
K
L
M
N
O
6__
P
Q
R
S
T
U
V
W
7__
X
Y
Z
[
$
]



Decimal ICL Sixbit Table

__0 __1 __2 __3 __4 __5 __6 __7 __8 __9
__
0
1
2
3
4
5
6
7
8
9
1__
:
;
<
=
>
?
 
!
"
#
2__
£
%
&
'
(
)
*
+
,
-
3__
.
/
@
A
B
C
D
E
F
G
4__
H
I
J
K
L
M
N
O
P
Q
5__
R
S
T
U
V
W
X
Y
Z
[
6__
$
]



Hexadecimal ICL Sixbit Table

__0 __1 __2 __3 __4 __5 __6 __7 __8 __9 __A __B __C __D __E __F
0__
0
1
2
3
4
5
6
7
8
9
:
;
<
=
>
?
1__
 
!
"
#
£
%
&
'
(
)
*
+
,
-
.
/
2__
@
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
3__
P
Q
R
S
T
U
V
W
X
Y
Z
[
$
]