Which of the following statements about design of a hardwired control unit for a
ID: 3831632 • Letter: W
Question
Which of the following statements about design of a hardwired control unit for a CPU is WRONG?
Outputs of the Decoder corresponding to the last state of each executive (branch) routine serve as the CLEAR (CLR) input of the Counter values so the execution is moved to the Fetch cycle.
Sequential Counter values are generally assigned to sequential states of the state diagram.
There is only one unique input to the Counter (i.e., mapping function of the values of the Instruction Register (IR)) for the Control Unit for a CPU.
Output of the Decoder corresponding to the last state of Fetch cycle serves as the LOAD (LD) input of the Counter.
A.Outputs of the Decoder corresponding to the last state of each executive (branch) routine serve as the CLEAR (CLR) input of the Counter values so the execution is moved to the Fetch cycle.
B.Sequential Counter values are generally assigned to sequential states of the state diagram.
C.There is only one unique input to the Counter (i.e., mapping function of the values of the Instruction Register (IR)) for the Control Unit for a CPU.
D.Output of the Decoder corresponding to the last state of Fetch cycle serves as the LOAD (LD) input of the Counter.
Explanation / Answer
B. Sequential Counter values are generally assigned to sequential states of the state diagram.
There is input from RESET, INCREMENT and CLK
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