I' .
5 CA FIELD AND ALTERNATE CA FIELD-A REGISTER INPUTS
CA
=
0000 through 1111
- FT
+
This signifies the source for the input data to the A register.
6 CB FIELD-B REGISTER INPUTS
GB = 0000 through 00 II
- FT
+
R
This signifies the source of the input data to the B register.
7 CK FIELD-CONSTANT GENERATOR
K =
0010
- K=OOlO PO
G
+
K-R
This signifies that a constant of 2 (0010)
will
be generated on the K buss, and is the source
input data for the B register.
24
IBM Confidential

8 ALTERNATE CK FIELD
CK
=
000 I through 00 I I
-
STORE WRAP
These are 64K options.
9 CD FIELD-DESTINATION FOR THE ALU OUTPUT
A. CD
=
0000
c
+
D~Z
This signifies that the ALU output goes onto the Z buss but not into any register.
B. CD
=
0111
*
C
+
D-R
IJ-MN MS WRITE
*
-
C
+
D-R
IJ-MN
MS STORE
IBM Confident;'l
25