CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 2Fh - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. - Standard CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. Checksum, Low Byte 2Eh and 2Fh are as defined by the original IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PCIBM PC/ATIBM PC AT specification and represent a byte-wise additive sum of the values in locations 10h-2Dh only, 00h-0Fh and 30h-33h are not included. This definition is used by most clone manufacturers including AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985., Compaq, Tandon, NEC, and Zenith. The IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PS/2IBM PS/2, any model line does not follow this standard with the range 19h-31h being undefined. On the original HP Vectra, this checksum only covers locations 10h to 20h, with a separate checksum for bytes 29h-2Ch (see offset 28h).