CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 16h - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. - BASE MEMORY IN KB (high byte) Note: The value in 15h-16h should be the same as in 0:413h and that returned by INT 12h. A PCIBM PC having 640k (280h) of conventional memory will return 80h in byte 15h and 02h in byte 16h.