Which of the following code snippets will branch to the label, is_zero, only if

Question

Which of the following code snippets will branch to the label, is_zero, only if bit 0 of $t0 has is a zero? andi $t0, ?t0, 1 beq $to, S0, is_zero nop # code for when bit 0 of $t0 is one is zero: # code for when bit 0 of $t0 is zero andi $t0, ?t0, 0 beq $to, S0, is_zero nop # code for when bit 0 of $t0 is one is zero: # code for when bit 0 of $t0 is zero ori $to, $t0, 1 beq $to, S0, is_zero nop # code for when bit 0 of $t0 is one is zero: # code for when bit 0 of $t0 is zero ori $to, $t0, 0 beq $to, S0, is_zero nop # code for when bit 0 of $t0 is one is zero: # code for when bit 0 of $t0 is zero

Explanation / Answer

andi. $t0, $t0, 0

# it perform And operation

beq $t0, $0, is_zero # it check equal or not

nop …

# code for when bit 0 of $t0 is one

is_zero:

… # code for when bit 0 of $t0 is zero

Option b correct.

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