[AG-TECH] problem of BTTV cards in different PCI slots.
orser at cns.montana.edu
Mon Mar 26 09:41:35 CST 2001
Had the same problem. (see below for the reason)
I think we need a driver update, but I haven't tracked that down.
Until the driver update, I think we're limited to 3 camera's.
Gary Orser , (406) 994-6451, orser at nervana.montana.edu
Montana State University
Center for Computational Biology
1 Lewis Hall, Bozeman MT, 59717
On Mon, 26 Mar 2001, [ISO-8859-1] Â¬½£ wrote:
> I bought a DELL Precision 2 CPU 420 MT workstation for Video capturing. I want to use 4 Pinnacle miroVideo PCTV cards.
> This Dell 420 machine has 5 PCI slots. I find PCI1,PCI2,and PCI3 works correctly with PCTV cards and VIC.
> The problem is that when I put the card into PCI4 or PCI5, the command " modprobe bttv" is OK, but VIC doesn't capture image, it doesn't respond.
> I tried Linux kernel 2.2.16 and 2.2.14, neither works. But in Win98 and 2000, PCTV in PCI 4 and PCI 5 works good. and I also tried some other BT848 cards and find the same result.
> I cannt find any difference between these PCI slots. Can you tell me why in Linux PCTV and VIC works good in PCI1-3 slots, but refuse to work in PCI4&5 slots? Shall I change bttv drivers in Linux?
> Thanks in advance
> Lu Jian
> PCI Devices May Function Incorrectly on the Dell Precision?
> WorkStation x20 Systems
> Problem: Peripheral Component Interface (PCI) devices
> may function incorrectly on Dell Precision WorkStation
> x20 systems.<?xml:namespace prefix = o ns =
> "urn:schemas-microsoft-com:office:office" />
> Discussion: WorkStation x20 systems use the new Intel
> 820 and 840 chipsets, which incorporate the new hublink
> design architecture. In this design, interconnected hubs
> perform specialized functions. One of these hubs is called
> the I/O Control Hub (ICH). The PCI bus, which
> implements PCI 2.2, is connected directly to the ICH on
> the 820 and 840 chipsets. Because of this, PCI devices see
> the ICH as a bridge, which may present problems in
> firmware and/or drivers that cannot negotiate PCI
> bridging. In addition, an Intel 21152AB PCI-to-PCI bridge
> resides (electrically) behind the ICH. Some devices may
> work behind the ICH, but do not work correctly behind the
> Intel bridge. The following is a list of devices that are
> known to function incorrectly:
> Drivers and/or firmware for PCI devices that do not have
> the appropriate PCI bridging technology do not work in
> any of the PCI slots.
> Montego I and II PCI sound cards generate errors in the
> Microsoft Windows 98 operating system stating that
> the card should be moved to the primary PCI bus. These
> cards do not work in any of the PCI slots on WorkStation
> x20 systems.
> Creative Labs PCI64V sound cards do not work in PCI slots
> 4 and 5 (located behind the Intel PCI-to-PCI bridge chip)
> on WorkStation 420 systems. The PCI64V sound cards
> function correctly in PCI slots 1, 2, and 3.
> Under the Windows NT 4.0 operating system, 3Com
> Coyote modems work only in slots 4 and 5 (located behind
> the Intel PCI-to-PCI bridge chip) on WorkStation 420
> systems because PCI resources are incorrectly assigned
> in the Windows NT hal.dll file. Using the /PCILOCK
> switch in the boot.ini file causes Windows NT to reassign
> PCI resources and resolve the conflict. This problem only
> occurs with PCI devices that use prefetchable memory
> The PCI 2.2 specification does not allow for memory
> address ranges below 1 MB. If a PCI device attempts to
> access a memory address below 1 MB, a BIOS
> plug-and-play error message is generated.
> Solution: All factory-installed PCI devices offered by Dell
> (excluding Dell Plus configurations) are compatible with
> WorkStation x20 systems. If problems occur while you are
> installing a third-party PCI device, contact the
> manufacturer of the PCI device in question for
> information and a resolution to your problem. On
> WorkStation x20 systems, the card must follow the PCI 2.2
> specification and be able to negotiate PCI bridges in both
> firmware and drivers to work correctly with the system. If
> a PCI card does not meet these guidelines, Dell cannot
> guarantee that the card will function properly in these
> Possible solutions include:
> Clear the system NVRAM by entering the BIOS
> setup, activating the <Caps Lock>, <Scroll Lock>,
> and <Num Lock> keys, and then pressing <Alt><E>.
> Test the card in all of the slots located behind the
> ICH on the WorkStation x20 system.
> NOTE: On the WorkStation 420, slots 4 and 5 are
> behind the Intel 21152AB PCI-to-PCI bridge chip.
> If you are using Windows NT 4.0, try the /PCILOCK
> switch. Place the /PCILOCK switch in the boot.ini
> file, which is located in the root directory of the boot
> drive (typically c).
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