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DMA Options with NI PXI to 3rd-party PCI Device with no DMA Controller

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Hi,

 

I need to pull data out of my 3rd-party PCI device at 22MB/sec.  The fastest I've been able to go using NI-VISA 5.4 in LabVIEW 2013 is 1.6MB/sec with the Move In 64 function.  There is no DMA controller on the 3rd-party device.  I was hoping to use the host's DMA controller and a VISA MEMACC object, but I stumbled across KnowledgeBase 3229I2RA: How Do NI PXI Controllers Support DMA (Direct Memory Access)? The KB states, "Our PXI controllers only support the PCI specification, and therefore do not need a DMA controller on the motherboard."  If there is no DMA controller on the 3rd-party PCI device, are there any DMA options for my 3rd-party device on NI PXI controllers?

 

Thanks for your time and thoughts,

 

Steve K


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