It fetches the next instruction.
it goes to queue for next instruction
The Instruction Pointer (IP) in an 8086 microprocessor contains the address of the next instruction to be executed. The processor uses IP to request memory data from the Bus Interface Unit, and then increments it by the size of the instruction.
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Suppose we give a 8-bit instruction ADD B to the microprocessor then this instruction is not at all understood by microprocessor as it only accepts binary inputs so first of all it stores the instruction in the INSTRUCTION REGISTOR then it decodes this instruction ADD B to its suitable binary code 80H in the INSTRUCTION DECODER.. after converting to 80H then the microprocessor understands that .. yes i have to add the content of the resistor B with that of A(accumulator) and store the result in the accumulator A this is a small example how microprocessor operates facing the instructions
pipelining
The fetch-execute cycle of a typical microprocessor involves fetching an instruction from memory, determining what actions the instruction requires it to do, and performing those actions. It is also simply called the Instruction Cycle.
stores next instructions
There are 74 instructions in the 8085 microprocessor.
Finishes the current executing instruction and then serves the interrupt.
this instruction is used to add the specified register content to that of the accumulator along with the carry flag value. this instruction is used in processes which involve continuous addition.
The address bus is a section of the bus that emits the address of the desired instruction or operand.
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