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how to specify which BAR space to use in a DMA transfer?

hi all:

 

I am currently develop a labview pci instrument driver for AMCC S5933, the referrnce design is the tutorial on the Ni.com and VMIC.zip file.

the memory allocation on my PCI card is

 

BAR0 : total: F long word spaces

BAR1 :total : 3FF long word spaces

 

i wonder how to specify which BAR space to use in DMA transfer?  I search the AMCC document and in vein

 

Thanks all!

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