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Per the online data sheet the VME-GPIB is "High-performance DMA transfers, Full 24-bit addressing mode". Yet when we set up the board to do a DMA transfer the board "locks up". A VME trace of the traffic shows that the board attemts to do a A32 mode data transfer and the top 8-bits (31-24) are corrupted. If the board is "A24", why is the DMA doing an "A32" transfer?
The online data sheet is missing a line that says it does provide A32 or 32-bit addressing as well. Thanks for pointing out the discrepancy. We will work on correcting that.
Note that the datasheet does describe 32-bit and 64-bit data transfers also, which are pins that should be implemented in Row B of the J2/P2 connector. One possible explanation for the lock up you are seeing is that the A24-A31 pins are not set up in Row B. The NI-488DDK for VME-GPIB does the A32 transfer for DMA, as you noticed.
