Using NI-VISA 3.2 (with LabVIEW 7.1) on a 64-bit CompactPCI bus

[mlloyd]

I'm trying to communicate with a 3rd party device via register-level programming. The device is connected to the computer via a 64-bit CompactPCI bus. There are VIs created for 32-bit transfer (i.e. VISA Move In 32), but not 64-bit transfer. Can a 64-bit transfer be performed by using 2 32-bit transfer VIs in parallel?

[ryanm]

What you are trying to do is very similar to combining two VISA Move In 16s to make a 32-bit transfer. Assuming the offsets are correct, this will work fine. Granted no one would want to do this because VISA In 32 does the same thing and is less complicated. Since 64-bit transfers are not directly supported, combining two 32-bit transfers is the only way to go. With this being said, you should be able to perform 64-bit transfers to your register.