Accessing a hardware device

["David Dudley" <DavidDu%cctexas.com@localhost>]

Guys (and gals, too ;-),

I've got an application where I need to access the hardware registers
of a specific PCI device.  This device doesn't have a driver associated
with it (and my application doesn't need one either), and the
application is planned to handle direct interface to the hardware.

Got three questions for you.  Once I can do these things, I can get the
application going.

How do I:

1.) Find the device (I know the PCI Vendor ID, and the board id)?

2.) Map the device into my memory space?

3.) I assume I have to release the device before exiting my program. 
How do I do that?

The hardware is a standard PC type device, using a card that is PCI. 
Previously, the application used an ISA card that was mapped with a DIP
switch, but with PCI, that went away.

Thanks,

David

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