Question

Which of the following is correct about BRNE instruction in avr microcontrollers?

(a) it is used to compare two registers

(b) it is used to compare two values

(c) it is used to check the zero flag

(d) it is used to jump to the given mentioned label when the zero flag accounts to 0

This question was addressed to me in an international level competition.

This intriguing question comes from Jump, Loop and Call Instructions in division AVR Microcontroller of Microcontroller

Answer 1

Right answer is (d) it is used to jump to the given mentioned label when the zero flag accounts to 0

Easy explanation: BRNE label instruction is used to jump to that particular address denoted by label if condition (Z=0) is true or satisfied. If the condition is not satisfied then it will execute the next immediate instruction.