Remap PCI-DIO-96 register space

[CharlieD]

WindowsXP SP3, Labview 7.1, NI-DAQ 7.4.4, (2) PCI-DIO-96 cards

I have an app that requires direct access the 82C55 registers on the cards.  Previously used the ISA version of the cards which mapped the registers (via switches/jumpers on the board) into low address space (0x180 & 0x2A0).  The new PCI cards are mapped by the OS into D000 & F000.  I do not seem to be able to access the registers at these base addresses.  From reading some of the posts on various forums, it sounds like I need to remap the registers into low address space by writing a new base address into one of the MITE ASIC registers.  Is this correct, and if so, is there a way to do this from inside LabView using the TDAQ/LabView VIs?

TIA

Charlie

[Brian_P]

Charlie,

Thank you for visiting the discussion forums. It definitly sound like you are on the right track.  I found a Knowledgebase Article that deals with this exact issue.  This article uses a .dll to access the hardware, you should be able to use that .dll in LabVIEW to call all of those function.  Here is an article on how to do that.  I hope this helps in your application.

Regards,

Brian P.