The following table shows the bit configuration for each RCA 301 character. The parity bit (2
6
) is not shown
in this table but is inserted in each configuration to indicate an odd parity count.
RCA 301 CODE
Group 1
Group II
Group III
Group IV
2
s
2
4
2
5
2
4
2
S
2
4
3?
24
2
3
2
J
2'
2°
0
0
•-1
(V
0
1
1
0
1
1
2-
/
0
&
— ( minus)
ft
0
0
0
0
1
A
J
/
0
0
0
1
2
B
K
S
0
0
1
0
3
C
L
T
0
0
1
1
4
D
M
U
0
1
0
0
5
E
N
V
0
1
0
1
6
F
O
w
0
1
1
0
7
G
P
X
0
1
1
1
8
H
Q
Y
1
0
0
0
9
I
R
Z
1
0
0
1
(space)
+
EI
EB
1
0
1
0
#
. (period)
$
, (comma)
1
0
1
1
@
9
*
%
1
1
0
0
(
:
ED
• (ISS)
1
1
0
1
)
(apostrophe)
EF
=
1
1
1
0
On 80 column cards, the groups are designated by the presence or absence of zone punches. Group I has no
zone punch. Group II has a Y zone punch, Group III has an X zone punch, and Group IV has a 0 zone punch.
RCA 301 programs are written using alphanumeric characters. Memory Locations are addressed as follows:
Memory Locations
Addresses
Memory Locations
Addresses
0000 to 9999
0000 to 9999
24000 to 24999
M000 to M999
10000 to 10999
&000 to &999
25000 to 25999
NOOO to N999
11000 to 11999
A000 to A999
26000 to 26999
O000 to 0999
12000 to 12999
B000 to B999
27000 to 27999
P000 to P999
13000 to 13999
C000 to C999
28000 to 28999
Q000 to Q999
14000 to 14999
DOOO to D999
29000 to 29999
R000 to R999
15000 to 15999
E000 to E999
30000 to 30999
"000 to "999
16000 to 16999
FOOO to F999
31000 to 31999
/000 to
/999
17000 to 17999
GOOO to G999
32000 to 32999
S000 to S999
18000 to 18999
H000 to H999
33000 to 33999
T000 to T999
19000 to 19999
1000 to 1999
34000 to 34999
U000 to U999
20000 to 20999
— 000 to —999
35000 to 35999
V000 to V999
(minus)
(minus)
36000 to 36999
W000 to W999
21000 to 21999
J000 to
J999
37000 to 37999
XOOO to X999
22000 to 22999
K000 to K999
38000 to 38999
Y000 to Y999
23000 to 23999
LOOO to L999
39000 to 39999
Z000 to Z999
1-6
Summary of Contents for 301
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