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Logical instructions are the instructions which perform basic logical Following is the table showing the list of logical instructions: system-programming. 10 Oct 2017 Definitions of the Logic Instructions AND A,B But of course, assembly performs these operations in large groups of bits. Example Using Real Code 29 Sep 2017 The bitwise logical operations were shown in the truth tables in .. respectively, so I go directly to assembly language rather than show the C xor destination, source. Logical Exclusive OR. Logic Instructions. The ability to manipulate bits is one of the advantages of assembly language; One use of and, 1. Assembly Language. Logical Instructions. Logical Instructions and destination, source and AL, 01H or destination, source or AX, FAH xor destination, source. The following instructions are going to perform logical operations between two For all formats, if every bit of the result is 0, the condition code is set to 0; The AND instruction is used for supporting logical expressions by performing Example section .text global _start. ;must be declared for using gcc. _start:. Assembly - Logical Instructions. The processor instruction set provides the instructions AND, OR, XOR, TEST, and NOT Boolean logic, which tests, sets, and clears the bits according to the need of the program. The first operand in all the cases could be either in register or in memory. 25 Jul 2017