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ATA_NOP

The ATA_NOP function performs no operation across the interface and does not change the state of either the manager or the device. It returns noErr if the drive number is valid.

The manager function code for the ATA_NOP function is $00.

The parameter block associated with this function is defined below:

struct        ataNOP    /* ATA NOP structure */
{
    ataPBHdr              /* ataPBHdr parameter block */
    UInt16      Reserved[24];
}   ataNOP;

Field descriptions

ataPBHdr
See the definition of the ataPBHdr structure.
Reserved[24]
Reserved. All reserved fields should be set to 0.
RESULT CODES

See Table A-1 for possible result codes returned by the ATA Manager.

© 1999 Apple Computer, Inc. — (Last Updated 30 Oct 97)

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