How many instructions does the PIC microcontroller have? (1) (2) The PIC instruction set is highly orthogonal. What does this mean? For the PIC16F877A for the Mnenomic, operand MOVWF f, give the description and 14-bit opcode (2) Write the assembly code applicable if we had an actuator connected to port A bit position 1 and we want to toggle the actuator on or off. Include comments (4) (2) (2) (1) Which is the only register in PIC microcontrollers that can be stored in the stack? What is the only device that has access to the stack? (1) What the difference between Last In First Out (LIFO) and First In Last Out (FILO) type of stack? (3) 3. To be able to determine how long the delay will be there are two important facts that we must know. State these facts. (4) Why must the subroutine listing contain enough information and comments? Define what a stack is or is like. 1. A single delay loop, with nested count loops in the delay routine can be used to achieve delays longer than 1milli second. Write a routine/code that demonstrates this. Include all steps and (16) comments.