HLT AND WAIT STATE:-
On the execution of HLT (Halt) instruction of 8086 ,CPU suspends its instruction execution and enters into an idle state .It waits for either an external hardware interrupt or treat or a reset pin (interrupt).When any one of these occurs ,CPU starts executing again. When the wait instruction is executed by 8086 .it internally checks the logic level existing at its TEST’ input .If TEST’ is at logic 1 state ,then CPU goes into an idle state .When TEST’ input assume a zero state execution resume from the next sequential instruction in the program.
