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When using the LDI instruction, how many times would the MDR and MAR registers be utilized?...

When using the LDI instruction, how many times would the MDR and MAR registers be utilized?

introduction to computer systems

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Answer #1

Following is the sequence that will be followed :

MAR = Address of instruction LDI

MDR = value in instruction LDI

MAR = the value currently in MDR

MDR =Value present at the address in MAR

The value in MDR is the final value.

So MAR and MDR are used 2 times each

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