Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

BCD AND ASCII APPLICATION PROGRAMSChecksum Byte

in ROM

‰To ensure the integrity of the ROM contents, every system must perform the checksum calculation

¾The process of checksum will detect any corruption of the contents of ROM¾The checksum process uses what is called a

checksum byteƒThe checksum byte is an extra byte that is tagged to the end of series of bytes of data