I/o registers, How to find the i/o address, Ow to – Omega 1002 User Manual
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3. I/O Registers
3.1 How to Find the I/O Address
The Plug & Play BIOS will assign a valid I/O address to all OME-PCI-1002 cards in
the system during the computer’s power-on stage. The ID numbers of OME-PCI-1002
are shown below:
• Vendor ID = 1234
•
Device ID
= 1002
Associated Driver Functions:
1. P1002_DriverInit(&wBoard)
This function detects the number of OME-PCI-1002 cards in the system.
• wBoard=1 Æ only one OME-PCI-1002 in this PC system.
• wBoard=2 Æ there are two OME-PCI-1002 in this PC system.
2. P1002_GetConfigAddressSpace(wBoardNo, *wBase, *wIrq, *wPLX)
Use this function to determine the resources for all cards installed in the system.
This is used when writing directly to the card’s I/O addresses.
• wBoardNo=0 to N Æ totally N+1 cards of OME-PCI-1002
• wBase Æ base address of the board control word
• wIrq
Æ allocated IRQ channel number of this board
• wPLX Æ base address of PCI-interface-IC
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