This nailed me, on a BE-6 as well.
I was attempting to install an Adaptec 2940 in what seemed to be slot 1
(Furthest left - slot on board...) (Slot 5!) and the doggon thing
wouldn't detect the attached SCSI devices. Said nothing was installed!
I assume some conflict w/ the card sitting next to it.
The Abit boards on the market really are having quite a few problems these
days...
Chad
> Hello!
>
> > Is there a way to _disable_ a PCI card's bus master capability?
> > I ask this because my brand new BP6 mainboard documentation
> > says that PCI slots 4 and 5 share the same bus master signal
> > and I cannot fill all 5 PCI slots and have all cards working.
> > Here's my machine setup:
> >
> > AGP videocard, shares IRQ with 1st PCI slot
> > 1st PCI: Hollywood Plus DVD decoder
> > 2nd PCI: SB Live!, does not share IRQ with other slots
> > 3rd PCI: Bt878 TV card, shares IRQ with the onboard HPT366
> > 4th PCI: presently nothing in it, shares IRQ and
> > bus master signal with 5th slot
> > 5th PCI: Symbios 53C875J SCSI card (Diamond Fireport 40)
> >
> > And I also have a 3Com 3c905B which I would like to use.
>
> Bus mastering can be disabled (bit 2 in the command register), but
> it's highly improbable that the card will continue working then :-)
>
> Older 3Com PIC NIC chips support both bus mastering and old-fashioned
> packet transfers using MMIO and the Linux driver supports both of them
> (actually, it needs to do so as many revisions have the bus master mode
> extremely buggy), but according to the comments at the start of the
> 3c59x driver, starting with the B revision, 3c90x cards work only
> in the bus master mode.
>
> Probably the wisest thing you can do is to get a motherboard with real
> PCI BUS.
>
> Have a nice fortnight
> --
> Martin `MJ' Mares <mj@ucw.cz> <mj@suse.cz> http://atrey.karlin.mff.cuni.cz/~mj/
> "Don't take life too seriously -- you'll never get out of it alive."
>
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This archive was generated by hypermail 2b29 : Sat Apr 15 2000 - 21:00:15 EST