National Instruments 6508 PCI-DIO-96 - Manual (Page 52)

Chapter 6 Programming
PCI-DIO-96 User Manual 6-6 © National Instruments Corporation
)
{ unsigned short pciCommandRegister;
unsigned long cardBaseAddress,
miteBaseAddress;
// configure the i/o space of the board such
// that it is memory mapped.
ExpMgrConfigReadWord(deviceNode,
((LogicalAddress) 0x00000004L),
&pciCommandRegister);
ExpMgrConfigWriteWord(deviceNode,
((LogicalAddress) 0x00000004L),
(pciCommandRegister | 0x0002));
// get the base addresses for the board.
ExpMgrConfigReadLong(deviceNode,
((LogicalAddress) 0x00000010L),
&miteBaseAddress);
ExpMgrConfigReadLong(deviceNode,
((LogicalAddress) 0x00000014L),
&cardBaseAddress);
// activate the standard i/o window.
*((unsigned long *) (miteBaseAddress +
0x000000c0L)) =
EndianSwap32Bit(((cardBaseAddress &
0xffffff00L) | 0x00000080L));
// return the base address of the board.
return ((void *) cardBaseAddress);
}
Port Identification
This manual refers to each port as A, B, and C and each PPI (82C55A)
as A, B, C, and D. NI-DAQ and LabVIEW documentation use numbers
to identify each port and PPI. For example, this manual uses PPI A
port A to refer to port A of the 82C55A identified as PPI A. NI-DAQ,
LabWindows/CVI, LabVIEW, or other application software
documentation, however, refer to this port as 0. Table 6-1 shows the
correlation between the different port names.