User`s manual

Continuous Data Transfer 81
PCIS-DASK
Double-Buffered AI/DI Operation
AI_AsyncDblBufferHalfReady or
DI_AsyncDblBufferHalfReady
to check if data in the circular buffer is half full and ready for copy-
ing to the transfer buffer. Then you may call:
AI_AsyncDblBufferTransfer or
DI_AsyncDblBufferTransfer
to copy data from the ready half buffer to the transfer buffer.