High−level Instructions
3 − 150
Description
Performs exclusive NOR operation on each bit in the 16-bit equivalent constant or 16-bit data specified by S1
and S2. The exclusive NOR operation result is stored in the 16-bit area specified by D.
{(S1)
(S2)} {(S1) (S2)} → (D)
Detects the bits whose on and off states match.
If the values of S1 and S2 are equal, all the bits of the data specified by D become 1.
Exclusive NOR operation
The exclusive NOR operation is shown below.
0 0
S1 S2 D
001
010
1
111
Flag conditions
・Error flag (R9007): Turns on and stays on when the area specified using the index modifier
exceeds the limit.
・Error flag (R9008): Turns on for an instant when the area specified using the index modifier
exceeds the limit.
・= flag (R900B): Turns on for an instant when the calculated result is recognized as “0”.
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