3.2 The Assignment of I/O Address
The plug & play BIOS will assign the proper I/O address to the OME-
PIO/PISO series card. If there is only one OME-PIO/PISO board, the user can
identify the board as card_0. If there are two PIO/PISO boards in the system, the
user will be very difficult to identify which board is card_0? The software driver can
support 16 boards max. Therefore the user can install 16 boards of PIO/PSIO series
in one PC system. How to find the card_0 & card_1?
The simplest way to identify which card is card_0 is to use wSlotBus &
wSlotDevice as follows :
1.
Remove all OME-PIO-D56/OME-PIO-D24 from this PC
2.
Install one OME-PIO-D56/OME-PIO-D24 into the PC’s PCI_slot1, run
PIO_PISO.EXE & record the wSlotBus1 & wSlotDevice1
3.
Remove all OME-PIO-D56/OME-PIO-D24 from this PC
4.
Install one OME-PIO-D56/D24 into the PC’s PCI_slot2, run PIO_PISO.EXE &
record the wSlotBus2 & wSlotDevice2
5.
Repeat (3) & (4) for all PCI_slot?, record all wSlotBus? & wSlotDevice?
The records may be as follows:
PC’s PCI slot
wSlotBus
wSlotDevice
Slot_1 0
0x07
Slot_2 0
0x08
Slot_3 0
0x09
Slot_4 0
0x0A
PCI-BRIDGE
Slot_5 1
0x0A
Slot_6 1
0x08
Slot_7 1
0x09
Slot_8 1
0x07
The above procedure will record all wSlotBus? & wSlotDevice? in this PC. These
values will be mapped to this PC’s physical slot. This mapping will not be changed
for any PIO/PISO cards. So it can be used to identify the specified OME-PIO/PISO
card as follows:
Step 1: Record all wSlotBus? & wSlotDevice?
Step2: Use PIO_GetConfigAddressSpace(…) to get the specified card’s wSlotBus
& wSlotDevice
Step3: The user can identify the specified OME-PIO/PISO card if the compare
the wSlotBus & wSlotDevice in step2 to step1.
OME-
PIO-D56/PIO-D24 User Manual (Ver.2.1, Oct/2003, PPH-005-21) ---- 32
