You should be able to find a basic example of most anything you would need to do with the 6534 in the shipping examples or on our
on-line example programs database. There are several different modes the 6534 can use for data transfer the most common being burst mode. For finite or continuous generation transfers, the driver will always preload the onboard 6534 memory with the data automatically (if it will all fit) so that operation doesn't really involve anything special.
If you are using LabVIEW, you can browse the shipping examples from under the Help menu. If you are using the NI-DAQ API, look in your ...NI-DAQ\Examples\ folder. I would suggest the "DOsingleBufBurstHandshake653x" example.
I hope this helps.
Russell
Applications Engineer
National Instruments
http://www.ni.com/support