Statement List (STL) - DCE FEL ČVUT v Praze

1.6 X Exclusive Or
Format
X
Address Data type Memory area
BOOL I, Q, M, L, D, T, C
Bit Logic Instructions
Description
X checks whether the state of the addressed bit is "1", and XORs the test result with
the RLO.
You can also use the Exclusive OR function several times. The mutual result of
logic operation is then "1" if an impair number of checked addresses is "1".
Status Word Bit Checks:
The EXCLUSIVE OR instruction can also be used to directly check the status word
by use of the following addresses: ==0, 0, >0, =0,