Consider the following sequence of micro-operations.Which one of the following is a possible operation performed by this sequence?a)Instruction fetchb)Operand fetchc)Conditional branchd)Initiation of interrupt serviceCorrect answer is option 'D'. Can you explain this answer?

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Consider the following sequence of micro-operations.

Which one of the following is a possible operation performed by this sequence?

a)
Instruction fetch
b)
Operand fetch
c)
Conditional branch
d)
Initiation of interrupt service

Correct answer is option 'D'. Can you explain this answer?

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Consider the following sequence of micro-operations.Which one of the f...

Program counter holds the next instruction value to be executed.
Here, MBR <- PC means the value of the program counter will get stored in MBR.
MAR <- X means some address value X is storing in MAR so to access memory location X.
PC <- Y means storing new instruction value Y to the program counter to access new instruction.
Memory <- MBR means MBR register will store its value to Memory. This saves the previous value of PC to memory.

This sequence of instructions matches with Interrupt Service Routine (ISR) since the sequence of instructions saved the address of current instructions into memory.
Then started executing new address by loading new instruction value to Program counter.
Hence, the correct answer is “option 4”.

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Consider the following sequence of micro-operations.Which one of the f...

Program counter holds the next instruction value to be executed.
Here, MBR <- PC means the value of the program counter will get stored in MBR.
MAR <- X means some address value X is storing in MAR so to access memory location X.
PC <- Y means storing new instruction value Y to the program counter to access new instruction.
Memory <- MBR means MBR register will store its value to Memory. This saves the previous value of PC to memory.

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Consider the following sequence of micro-operations.Which one of the following is a possible operation performed by this sequence?a)Instruction fetchb)Operand fetchc)Conditional branchd)Initiation of interrupt serviceCorrect answer is option 'D'. Can you explain this answer?

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