(a) A bus transaction on the 8086 system takes 4 clock cycles. If the instruction Out DX,al is executed, explain the bus transactions that are needed to execute the instruction assuming DX-FF05h. 
(b) i. Consider the operation of PPI 8255. What is the difference between simple port and a port with handshaking capabilities. 
ii. If the base address of the 8255 is AA 10h, program port A as bidirectional port with handshaking, port B as input port with handshaking and C as simple output port 
iii. Show how the PPI 8255 is connected to the CPU.