Do all the 5 questions please, ASAP!

1. Show in a figure how an interrupt is handled in ARM 9 microprocessor system. 2. What are stacking and unstacking processes using examples if necessary? 3. What are MSP and PSP? What is the purpose of them. 4. Show block diagram of a system timer and explain the function of the key registers and controls bits in the SysTick control and status register. 5. Suppose clock frequency is 100Mhz. What is the RELOAD value if we need a Systick Interval of 500ms