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What is the difference between instruction cycle and machine cycle?
an instruction cycle may consist of a number of machine cycles.
define the Fetch-Execute cycle?
the Fetch-Execute cycle is the process by which a computer retrieves a programmed instruction from its memory, determines what actions the instruction dictates, and carries out those actions.
Which step of the machine cycle retrieves the next program instruction from memory?
fetch
What are The process the CPU performs for each program instruction is called the?
Machine cycle
What is an instruction phase together with the execution phase called?
The instruction phase together with the execution phase is called a "Machine Cycle".
What is a cycling machine?
Each time the CPU executes an instruction, it takes a series of steps. The complete series of steps is called a machine cycle. A machine cycle can be divided into two smaller cycles. These are instruction cycle and execution cycle. Instruction cycle: In instruction cycle CPU takes two steps-- 1. Fetching: Before the CPU can execute an instruction, the control unit must retrieve or fetch a command or data from the computer's memory. 2. Decoding: Before a command can be executed, the control unit must decode the command into instruction set. Execution cycle: In execution cycle CPU also takes two steps-- 1. Executing: When the command is executed, the CPU carried out the instructions in order by converting them into macrocode. 2. Storing: The CPU may be required to store the result of an instruction in memory.
Why DAD instruction in 8085 used three machine cycle?
1 machine cycle for opcode fetch 2nd n 3rd are idle machine cycles as microprocessor is 8 bit therefore it cant perform 16 bit additon in one cycle !!
How many t states are required for opcode fetch machine cycle at the execution of sequential instruction?
three
Is a machine cycle step that is refer to the process of obtaining a program instruction or data item from memory?
Fetch.
What is instruction cycle with interrupts?
The instruction cycle is the basic operation cycle in a computer. This is what will take in data, process it and execute as required.
What frees processors from having to wait for one instruction to compleate the machine cycle before fetching the next?
pipelining
How many machine cycle required for the instance like move a b?
The MOV A,B instruction requires 1 machine cycle and 4 T-states, 3 to fetch the opcode, and 1 to decode/execute it.
