Greetings,
Unfortunately, there are no C examples for simultaneously performing input and output with a PCI-6534. Yet, it should not be difficult to combine two of the examples that install with NI-DAQ to accomplish this task. Below are the examples I would suggest that you examine:
Finite Input
DIsingleBufPatternGen653x.C
Continuous Input
DIdoubleBufPatternGen653x.C
Finite Output
DOsingleBufPatternGen653x.C
Continuous Output
DOdoubleBufPatternGen653x.C
Good luck with your application.
Spencer S.