B$-$ Design the control gates associated with IEN flip flop in the basic computer.

C$-$ Please draw the control logic gates associated with the encoder inputs X$2,$ X$3.$

Suppose you have the encoder for Bus selection circuit in the basic computer:

TABLE $5\mathrm{.}7$ Encoder for Bas Selection Citcuit

To determine the logic for each encoder input, it is necessary to find the control functions that place

the corresponding register onto the bus.

:Use the the micro$\_$operations for the basic computer in the following table

TABLE $5-6$ Control Functions and Microoperations for the Basic Computer