1. a) The 8284A is a clock generator for 8086 microprocessors. i) Describe FOUR (4) functions of 8284A to the 8086 microprocessors. (4 marks) ii) Give the frequency of the 8086 microprocessors clock signal. (1 marks) b) Bus timing in 8086 microprocessors consists of read and write cycle. Each bus cycle equals four system clocking periods (T states). Discuss a complete bus timing for the write cycle. Draw a bus cycle diagram to help illustrate your answer. (5 marks) e) List and differentiate TWO (2) modes of operation for the 8086 microprocessors. (6 marks) f) Describe ONE (1) advantage and ONE (1) disadvantage of multiplexedbus in the 8086 microprocessors. (4 marks)