Consider the control unit of Figure 16.7. Assume that the control memory is 24 bits wide. The control portion of the microinstruction format is divided into two fields. A micro operation field of 13 bits specifies the micro-operations to be performed. An address selection field specifies a condition, based on the flags, that will cause a microinstruction branch. There are eight flags.
a. How many bits are in the address selection field?
b. How many bits are in the address field?
c. What is the size of the control memory?

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Address decoder Control memory Control buffer Control Address register Control address register FlBranch logic Multiplexer Address selection Instruction register Figure 16.7 Branch Control Logic: Single Address Field