Alternate CA Field
CA
=cc
0 I 00 (S)
This decode specifies the S register as the input to the A register. The A
register parity check is blocked. (See example 5, page 24.)
CA =
0101 (H)
This decode specifies the H register as the input to the A register. The A
register parity check is blocked. (See example 5, page 24.)
CA
=
0110 (FI)
This decode specifies the MPX buss-in-line (FI) as the input to the A reg-
ister. (See example 5, page 24.)
CA =
0111 (R)
This decode specifies the R register as the input to the A register. (See ex-
ample 5, page 24.)
CA
=
1000 (D)
This decode specifies the D register as the input to the A register. (See ex-
ample 5, page 24.)
CA =
1001 (L)
This decode specifies the L register as the input to the A register. (See ex-
ample 5, page 24.)
CA =
1010
(G)
This decode specifies the G register as the input to the A register. (See ex-
ample 5, page 24.)
CA =
1011 (T)
Thil decode specifies the T register as the input to the A register. (See ex-
ample 5, page 24.)
CA =
1100 (V)
This decode specifies the V register as the input to the A register. (See ex-
ample 5, page 24.)
CA =
1101 (U)
This decode specifies the U register as the input to the A register. (See ex-
ample 5, page 24.)
CA
=
1110
(J)
This decode specifies the
J
register as the input to the A register. (See ex-
ample 5, page 24.)
CA
=
1111
(I)
This decode specifies the I register as the input to the A register. (See ex-
ample 5, page 24.)
Activated by AA
=
1
CA =
0000
(F)
This decode specifies the external interrupt register (F), in the complement
form, as the input to the A register. (See example 5, page 24.)
CA
=
0001 (SFG)
This decode specifies the console switches F and G as the input to the A reg-
ister. (See example 5, page 24.)
CA
=
0010 (MC)
This decode specifies the machine check register (MC) as the input to the
A register. The A register parity check is blocked. (See example 5, page
24.)
CA
=
0100 (C)
This decode specifies the interval timer register (C) as the input to the A
register. The A register parity check is blocked. (See example 5, page 24.)
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