Varian Data 620/i System Reference Manual page 73

n
n+1
n
n+1
3-46
X¢F
Execute if Overflow Set Timing: 2 cycles
17 16 15 14 13 12 11 10
9
8 7 6 5 4 3
2
1 0
r-
T
00
I
3
I
001
~-+-+--------~----~------------~
I
I
I
I
r-.-.l
Ll8-bi!.
option
Execute Address
If the overflow indicator (OF) is set, the instruction at the
execute address is executed, and then the next instruction in
sequence is executed.
If the overflow indicator is not set, the next instruction in
sequence is executed. Execution of the XOF instruction resets
the overflow i ndi cator.
I
XAP
I
17 16
r-r-
I
I
~-+-
I
I
Indexing: No
Indirect Addressing: Yes
Registers Altered: OF (reset)
Execute if A Regi ster
Positive
15 14 13 12 11 10
9
8
00
I
3
I
Timing: 2 cycles
7 6 5 4 3 2 1 0
002
I
I
Execute Address
G-
L
-
18-b1.!..
option
If the A register is positive or zero, the instruction at execute
address is executed, and then the next instruction in sequence
is executed. If the A register is negative, the next instruction
in sequence is executed.
Indexing: No
Indirect Addressing: Yes
Registers Altered: None