Question $1(10$ points$)$ Answer the following questions about the multiplexed

address, data, and control busses. Your answer should be brief.

a$.$ Explain the use of the multiplexed address$/$data pins $($AD$0-$AD$15)$ and the

multiplexed address$/$status pins $($A$16/$S$3-$A$19/$S$6)$ in the $8086$ processor?

Explain the operation of the ALE pin?

b$.$ Explain the operation of the status bits S$3$ and S$4?$

c$.$ In the two$-$bank memory addressing system, explain the functionality of the

BHE $$ and A$0$ pins in terms of accessing odd bytes, even bytes, and whole words

in the memory.

d$.$ Determine the types of CPU bus cycle that correspond to the following

instructions:

$$ MOV BX$,[0780$H$]$

$$ OUT B$3$H$,$ AX