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Overlapped I/O in DJTG (JTAG) API



Could you please help me understand what overlapped I/O is.

I can see APIs like the below one taking a last argument to specify if overlapped i/o is enabled.

DjtgPutTmsBits(HIF hif, BOOL fTdi, BYTE * rgbSnd, BYTE * rgbRcv, DWORD cbits, BOOL fOverlap)
fOverlap - TRUE if operation should be overlapped

Is it Asynchronous I/O? Could you please provide a use case and if possible sample code which uses this?

Regards, Akhil

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