Describe the implementation of the multiply instruction in the hypothetical machine designed by Wilkes. Use a...

Describe the implementation of the multiply instruction in the hypothetical machine designed by Wilkes. Use a narrative and a flowchart.

Expert Solution

Answer: Wilkes was the first person who explained or proposed the use of micro-programmed control unit in around 1951. The proposal of Wilkes was continuously expanded to a more elaborated design. The configuration proposed by Wilkes will be in the figure attached with this answer. The main component of this system is a matrix half filled with diodes. Each symbolic expression should be translated into a bunch of control signals which are also called as micro-construction bits.

ORDER	EFFECT OF THE ORDER
An	C(Accumulator) + C(n) to Accumulator1
Hn	C(n) to Accumulator2
Vn	C(Accumulator2) x C(n) to Accumulator, where C(n)>= 0
Sn	C(Accumulator) - C(n) to Accumulator1
Tn	C(Acc1) to n, 0 to Accumulator
Un	C(Accumulator1) to n
Gn	if C(Accumulator)<0, then transfer control to n; if C(Accumulator)>=0, proceed serially
Ln	C(Accumulator) x 2^-(n+1) to Accumulator
Rn	C(Accumulator) x 2⁽ⁿ⁺¹⁾ to accumulator
In	Read next character on I/P mechanism into n
On	Send C(N) to O/P mechanism

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