Question 2: (10 points) Circle the best answer for each 1- Calculating the delay in a loop a. Depends in which timer was set b. Requires a few NOP instructions c. is more accurate if one accounts for the cases when the conditional branch or skip is false, d. Relies on the instruction size only 2- Interrupts are used in order a. not to waste clock cycles waiting for an event to happen b. to execute a service routine C. to stop the microcontroller and save power d. None of the above 3- Upon executing a RETFIE instruction the stack is popped and bottom-of-stack is loaded into the program counter b. the program counter will be incremented by 2 C. the FSR pointer will contain the value popped from the stack d. none of the above 4- At the start of an interrupt service routine, interrupt flags are checked in order to turn-off other interrupts b. find out what caused the current interrupt cause a delay d. None of the above 5- The sequence executed with the instruction "RETLW 12" is a. PC=contents of (TOS), TOS=TOS-1, WREG="0001 0010" b. TOS=TOS-1, PC=contents of (TOS), WREG="0001 0010" c. PC=contents of (TOS), TOS=TOS+1, WREG="0000 1100" d. TOS=TOS-1, PC=contents of (TOS), WREG="0000 1100" a. 120 points total: 3 pts each)