Varian Data 620/i System Reference Manual page 89

n
n+1
n
n+l
3-62
I
ADDI
I
Add Immediate Timing: 2 cycles
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
r-T
I
I
1--+
I I
-
-
t--J..
~-b
it
-
option
00 6
I
120
Operand
The contents of the A regi ster are added to the contents of the
operand at location n + 1. The sum is placed in the A register.
After execution, if (A)
~
2 15 (217) or < _2 15 (_2 17 ), the
overflow indi cator (OF is set.
SUBI
17 16
r-T-
I I
1--+
I I
Indexing: No
Indirect Addressing: No
Registers Altered: A, OF
Subtract Immediate
15 14 13 12 11 10 9 8
00
I
6
I
Operand
~_L
18-bi!..
option
Timing: 2 cycles
7 6 543
2
1 0
140
The contents of the operand at location n + 1 are subtracted
from the contents of the A register. The difference is placed in
the A regi ster. After execution, if (A)
~ 2 15 (217) or
< _2
15 (-2 17 ), the overflow indicator (OF is set.
Indexing: No
Indirect Addressing: No
Registers Altered: A, OF