They are used to act upon logic operations on the operators.
AND
OR, NEG
NOT
TEST
XOR
AND INSTRUCTION
Function: It acts upon the conjunction of the operators bit by bit.
Syntax:
AND destiny, source
The outcome of this operation is stored on the destiny operator.
OR INSTRUCTION
Function: Logic inclusive OR
Syntax:
OR destiny, source
NEG INSTRUCTION
Function: It produces the complement to 2.
Syntax:
NEG destiny
This instruction produces the complement to 2 of the destiny operator and stores it on the similar operator.
NOT INSTRUCTION
Function: It carries out the turnaround of the destiny operator bit by bit.
Syntax: NOT destiny
The outcome is stored on the same destiny operator.
TEST INSTRUCTION
Function: It logically evaluates the operators
Function: TEST destiny, source
It executes a conjunction, bit by bit, of the operators, but differing from AND, this instruction does not place the result on the destiny operator, it only has effect on the state of the flags.
XOR INSTRUCTION
Function: OR exclusive
Syntax:
XOR destiny, source its function is to do the logic exclusive disjunction of the two operators bit by bit.