There are no instructions in the 8085 that execute in only one clock pulse. The minimum number of clock cycles is four; three for instruction fetch and one for instruction decode/execute.
How do you interface a clock and microprocessor?
There are binary patterns which when present on a microprocessor's input register, cause a fixed set of switching to occur within the processor, across a defined number of clock cycles. They comprise the instructions which cause the microprocessor to do things.
The clock signal in a microprocessor allows synchronization of several components of the microprocessor. The correctness of the computation of the microprocessor depends upon efficient and balanced distribution of the clock signal. The clock generator generates the clock signal.
Microprocessor processes something on each clock pulse
branch instruction
It fetches the next instruction.
it goes to queue for next instruction
The NOP instruction is a no-operation instruction. It does nothing to the state of the machine, except to use some time. In the case of the 8085, it uses four clock cycles plus however many wait states are need to access the NOP instruction from memory.
Special restart instruction used with interrupts
it has an instruction set of a few hundred instructions.
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.