Briefly explain the steps involved in a fetch cycle?

Briefly explain the steps involved in a fetch cycle?
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1 Answer

Answer :

Answer :Fetch cycle is the time required to fetch an opcode from a particular location in memory.

General Fetch Cycles consist of 3T states.
The first T state involves the sending of the memory address stored in the Program Counter to the memory.
During the second T state the contents of the addressed memory is read ( this generally is the opcode at the specified location)
In the third T state the opcode is sent to the Instruction register through the data bus for execution.
For slower memories the processors has the provision to get in to the WAIT cycles as well.
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