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List and briefly define the possible states that define an instruction execution?
Wiki User
∙ 14y ago
The possible states that define an instruction execution are as follows:
Instruction address calculation - Determine the address of the next instruction to be executed.
Instruction fetch - Read instruction from its memory location into the processor.
Instruction operation decoding - Analyze instruction to determine type of operation to be performed and operand to be used.
Operand address calculation - If the operation involves reference to an operand in memory or available via I/O, then determine the address of the operand.
Operand fetch - Fetch the operand from memory or read it in from I/O.
Data operation - Perform the operation indicated in the instruction.
Operand store - Write the result into memory or out to I/O.
Wiki User
∙ 14y ago
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