Varian Data 620/i System Reference Manual page 91

n
n+1
n
n+1
3-64
(divisor> dividend, taken as a binary fraction), overflow wi II
not occur. If overflow does occur, the overflow indicator (OF)
is set.
~
17 16
r-T
I
I
~-+-
I
I
~-L_
18-bit
.-
option
Indexing: No
Indirect Addressing: No
Registers Altered: A, B, OF
Increment and Replace
Immediate
15 14 13 12 11 10 9 8 7 6
00
I
6
I
Operand
Timing: 3 cycles
543 2 1
a
040
The contents of the 0Gerand at location n
+
1 are incremented
by one, mod216 (2 1 ). After execution, if(n+1)2 15 (2 17 ),
the overflow indi cator (OF) is set.
Indexing: No
Indirect Addressing: No
Registers Altered: Operand, OF
~
Exclusive-OR Immediate Timing: 2 cycles
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
a
r-T-
I I
I
I
00
6 130
~-+
I
I
Operand
~-L_
18 -.bi!.
option
An exclusive-OR is performed between the contents of the
operand at location n + 1 and the contents of the A register,
and the result is placed in the A register. If the same bit
position of the operand and the A register contains a zero,
or
if
both bit positions contain a one, the result is zero. The
truth table is shown below, where n
=
bit position.