re: Resource Conflict Problem on a PCI bus of a PC System Board

[frances_cohen@ptltd.com]

Hanan,
  The Phoenix BIOS will report a resource conflict for either lack of 
available resources - your card asked for more than what was available in 
the system,  or for a BAR that the BIOS is unable to interpret, because it 
is not following the Spec.  When this error occurs,  the card is set to the 
disabled state, and no configuration takes place.  I suggest  you evaluate 
your BAR's especially how they read after being written with 0ffffffffh.   

Frances Cohen
Phoenix Technologies
frances_cohen@ptltd.com
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Original Text
From "Rosenthal, Hanan" <Hanan_Rosenthal@cisnc.canon.com>, on 10/25/96 6:27 
PM:
To: SMTP@PTLNORWOOD3@Servers[Mailing List Recipients 
<pci-sig-request@znyx.com>]

Greetings, all.

After installing a new PCI board for debugging,  the BIOS reported 
a "Resource Conflict" error. 
In addition, the BIOS did not perform even basic configuration such as
allocating base addresses and interrupt lines.
The same message was repeated for all available PCI slots.

We ignored the message and resumed system boot. It seemed that the
system started successfully.
We were able to access the configuration registers, program the device
(using PCI BIOS calls) and perform run-time accesses, but performance
was degraded and sometimes erratic.

The message and the problems disappear if we unplug this new board.

Resetting PCI configuration process in the BIOS setup screen did not
help.

We are using a PC system board that contains two IDE controllers 
as well as a PCI/ISA bridge on the PCI bus. 
Our BIOS is Phoenix 4.05 .
 
Any ideas, solutions, suggested procedures or advice are most welcome.

Thanks in Advance!

Hanan Rosenthal 
Tel. (408) 342-2230

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