Pci Initialization For The Ibm Compatible System - National Instruments PCI E Series Programmer's Manual

Chapter 4 Programming

PCI Initialization for the IBM Compatible System

1
The PCI SIG provides further information on the PCI BIOS calls.
PCI E Series RLPM
must configure the bus-related resources before attempting to execute a
register level program. Both the bus-related and data acquisition-related
PCI configurations are described in the PCI E Series User Manual.
PCI local bus boards can be used on any PCI bus system, however, this
manual only discusses IBM-compatible and Apple Macintosh systems. The
PCI E Series Register-Level Programmer Manual Companion Disk
contains different functions in C code for users to configure the
PCI E Series boards.
The following sections describe the outline of PCI initialization on the PC
and Macintosh. Detailed code and comments can be found on the
Companion Disk.
The PCI E Series boards use the MITE Application Specific Integrated
Circuit (ASIC) chip as the PCI bus interface. National Instruments
designed this ASIC specifically for data acquisition. In order for the board
to operate properly this chip must be configured. Ordinarily, NI-DAQ
performs this function, but if you are not using NI-DAQ, then you must
configure the MITE ASIC chip. The following sections explain how to
accomplish this.
The initialization is done by the
companion diskette.
Setup_Mite()
1. It detects whether the PCI bus is present using the Is_PCI() function
while utilizing PCI BIOS calls
present.
2. It scans the PCI bus for all National Instruments PCI E Series boards
using Find_NI_Devices() function. PCI BIOS calls are again used to
find PCI boards that contain the National Instruments Vendor ID
(0x1093) and a valid PCI E Series device ID (for example the device
ID of the PCI-MIO-16XE-50 is 0x0162). If a board is found matching
these requirements, its pertinent information is stored in a data
structure.
3. It configures the device windows of the MITE and re-maps the board
under 1 MB in the memory map. See the companion diskette and the
Re-mapping the PCI E Series Board
further information
Setup_Mite()
performs the following functions:
1
. This verifies that the PCI bus is
section in this chapter for
4-2
function found on the
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