The register transfer statements for a register R and the memory in a computer are as follows
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The register transfer statements for a register R and the memory in a computer are as follows (the X's are control functions that occur at random):
X'3X1: R←M[AR] Read memory word into R
X'1X2: R←AC Transfer AC to R
X'1X3: M[AR]←R Write R to memory
The memory has data inputs, data outputs, address inputs, and control inputs to read and write as in Fig. 2-12. Draw the hardware implementation of R and the memory in block diagram form. Show how the control functions X1 through X3 select the load control input of R, the select inputs of multiplexers that you include in the diagram, and the read and write inputs of the memory.
Fig. 2-12
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