Instruction Cycles An instruction cycle is a sequence of operations performed by the CPU to execute a single instruction. It typically consists of the follo...
Instruction Cycles
An instruction cycle is a sequence of operations performed by the CPU to execute a single instruction. It typically consists of the following steps:
Fetch: The CPU fetches the instruction from memory into a register.
Decode: The instruction is decoded to determine the operation to be performed.
Execute: The instruction is executed, and the results are stored in memory or other registers.
Store results: If the instruction involves writing data to memory, the results are stored in the designated memory location.
Example:
Consider the following instruction:
assembly
MOV A, #10
This instruction fetches the value 10 from memory into the register A.
Key Points:
An instruction cycle can take several clock cycles to complete.
Each instruction has its own specific sequence of operations.
The order of instructions is fixed and determined by the processor architecture.
The instruction cycle is one of the fundamental mechanisms by which the CPU executes instructions