INSTRUCTION AND INSTRUCTION SEQUENCING

Data transfers between the memory and the registers (MOV, PUSH, POP, XCHG). Arithmetic and logic operations on data (ADD, SUB, MUL, DIV, AND, OR, NOT). Program sequencing and control(CALL. RET, LOOP, INT). I/0 transfers (IN, OUT).

MICROPROGRAMMED AND MIRCRO CONTROLLER

program made up of microinstructions is used to carry out a series of micro-operations.