6F3B0250
Basic Hardware and Function
251
7. Instructions
FUN 183
DNEG
Double-word 2’s complement
Expression
Input
-
[
A+1
×
A
DNEG
B+1
×
B
]
-
Output
Function
When the input is ON, this instruction finds the 2’s complement value of double-word data
A+1
×
A, and
stores it in
B+1
×
B.
Execution condition
Input
Operation
Output
OFF
No execution
OFF
ON
Execution
ON
Operand
Name
Device
Register
Constant Index
X
Y
R
S
T.
C. XW YW RW SW
T
C
D
I
J
K
A
Source
Ö
Ö
Ö
Ö
Ö
Ö
Ö
Ö
B
Destination
Ö
Ö
Ö
Ö
Ö
Ö
Example
When X007 is ON, the 2’s complement value (sign inverted data) of double-word register
RW41
×
RW40 is stored in double-word register D0151
×
D0150.
For example, if RW41
×
RW40 is -1234567890, the 2’s complement value 1234567890 is stored in
D0151
×
D0150.
Note
·
The data range of
A+1
×
A is -2147483648 to 2147483647. If the data of A+1
×
A is -2147483648, the
same data -2147483648 is stored in
B+1
×
B.
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