Definition: Programmed I/O


In a disk drive with an AT interface, data transfers between the drive and host using programmed I/O (PIO). The host uses PIO to write to the Command Block Registers (CBRs) when transmitting control information, such as the location of a read command.




DID YOU KNOW?  DATA RECOVERY FACTS AND TERMINOLOGY:

Data Recovery Fact

EOD

End Of Data. Electronic or magnetic sign, a part of the low-level format on tapes. EOD signals the end of data.

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