RE: PC bios recognizing PCI card

["Kevin Brace" <kevinbraceusenet@hotmail.com>]

570ms sounds too slow to me.
Try to get it programmed within 100ms if that's possible so that you can 
reset the FPGA through RST#.
The 100ms number I mentioned came from PCI 2.2 specification P. 135.



Kevin Brace (In general, don't respond to me directly, and respond within 
the newsgroup.)



>From: "Bhaskar Bose" <bose@derivation.com>
>To: "Pci-Sig" <pci-sig@znyx.com>
>Subject: RE: PC bios recognizing PCI card
>Date: Fri, 5 Apr 2002 17:06:35 -0800
>
>The FPGA design takes approximately 570ms to load.
>Is this too long? We can speed this up to 125ms if we have
>to, but it will take a little work.  Is the 125ms too slow
>also?
>
>-- Bhaskar
>
>
> > -----Original Message-----
> > From: Austin Franklin [mailto:austin@darkroom.com]
> > Sent: Friday, April 05, 2002 10:46 AM
> > To: PCI SIG Mailing List
> > Subject: RE: PC bios recognizing PCI card
> >
> >
> > This has been an issue.  There is nothing in the PCI spec (2.1 at
> > least) for
> > how long a card has to become "configured", per se...and since
> > your FPGA has
> > to take some time to configure, it is probably taking longer than
> > the PC is
> > taking to go look for it.
> >
> > What FPGA are you using, and how are you loading it?  Are there any 
>"fast"
> > modes available to speed up loading?  You can try having the BIOS do the
> > "long" memory/POST test, and possibly delay the BIOS PCI configuration 
>to
> > see if that's the problem...
> >
> > Try going into BIOS "setup" mode also, and see if it recognizes
> > it after you
> > then exit that...as it SHOULD re-check the PCI configuration after 
>exiting
> > (possibly providing your exit does a reboot, if not, just hit the reset
> > button to "exit" the BIOS setup and see if that helps).
> >
> > Austin Franklin
> > austin@darkroom.com
> >
> >
> > > -----Original Message-----
> > > From: Bhaskar Bose [mailto:bose@derivation.com]
> > > Sent: Friday, April 05, 2002 1:11 PM
> > > To: pci-sig@znyx.com
> > > Subject: PC bios recognizing PCI card
> > >
> > >
> > > I have a PCI interface running on an FPGA.
> > >
> > > For some reason, the PC does not recognize the card on boot.
> > > In the bios setting there is a flag for the PCI settings
> > > that is "Reset PCI Configuration Data".  When I set this,
> > > the PC sees the card.  This setting is disabled each time
> > > you boot.  So therefore, the next time I boot the system
> > > it does not see the card.  I have to set the "Reset PCI configuration
> > > data" flag each time.
> > >
> > > For some reason the BIOS is not seeing my PCI card.  On other PCs
> > > that have a different BIOS this is not a problem.
> > >
> > > Is there something PC related that I need to know about for PCI
> > > configuration process?
> > >
> > > -- Bhaskar
> > >
> > > 
>------------------------------------------------------------------------
> > > Dr. Bhaskar Bose                            Derivation Systems, Inc.
> > > bose@derivation.com                         5963 La Place Court, Ste 
>208
> > > Voice: (760) 431-1400 ext. 201              Carlsbad, CA  92008
> > >   Fax: (760) 431-1484                       U.S.A.
> > >  http://www.derivation.com
> > >
> > 
>-------------------------------------------------------------------------
> > >
> > >
> >
>




_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com