Computer Language : Logical Operation

Logical Operation

Logical	and	and $1,$2,$3	$1 = $2 & $3	3 register operands; Logical AND
	or	or $1,$2,$3	$1 = $2 | $3	3 register operands; Logical OR
	not	nor $1,$1,$0	0=1/ 1=0	convert 1 to 0 convert 0 to 1
	and immediate	andi $1,$0,100	$1 = 100	Logical AND register, constant
	or immediate	ori $1,$0,100	$1 =100	Logical OR register, constant
	shift left logical	sll $1,$2,10	$1 = $2 << 10	Shift left by constant
	shift right logical	srl $1,$2,10	$1 = $2 >> 10	Shift right by constant

·         Example :   1.)                  sll   $t0,$t0,16                     srl   $t0,$t0,24

 0001 0010 0011 0100 0101 0110 0111 1000

solution : 

0101 0110 0111 1000 0000 0000 0000 0000      #sll

0000 0000 0000 0000 0000 0000 0101 0110      #srl

2.)         if     $t1 contains    00000000 00000000 00000000 00101100

                    $t2  contains   00000000 00000000 00000000 00001010

                What is the final content of $8 after this instruction is performed?

1.        and  $t0, $t1, $t2          # reg  $t0 = $t1 & $t2

2.        or   $t0, $t1, $t2          # reg  $t0 = $t1 & $t2

Solution:

For the AND operation, $t0 contains

      00000000 00000000 00000000 00001000

For the OR operation, $t0 contains

      00000000 00000000 00000000 00101110

By : Chong Cai Ning      B031210080