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Date:      Fri, 13 Sep 1996 22:36:36 -0700 (PDT)
From:      Doug White <>
To:        vadik likholetov <>
Subject:   Re: SCSI NCR53C810 troubles
Message-ID:  <>
In-Reply-To: <>

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On Thu, 12 Sep 1996, vadik likholetov wrote:

> Good time of the day!
> I've run in some troubles.
>   I have a 486/sis496 machine. Also I have SCSI NCR53C810 controller installed
>   I have 3 versions(3 boads) of this controller. I have , as I mentioned, 
> SiS496 motherboard. Motherboard's Award BIOS does not have support for this SCSI
> controller.
> Every controller runs properly on OPTI486 with AmiBIOS SCSI controller support.
> But only one controller RUNS properly on *my* machine under FreeBSD 2.1.5.
> The second one fails after proper initialization during bus scanning phase
> with 'error' message & controller register dump. Also it hangs the system.
> The third one can't even initialize properly. It says '...on pci:9 irq ??...
> ...invalid irq 255...'.

You need to go into BIOS setup and assign IRQs for each of the PCI slots.
The NCRs won't auto-assign IRQs.  I had the same problem with my 53C815
with onboard BIOS.

Doug White                              | University of Oregon  
Internet:    | Residence Networking Assistant    | Computer Science Major

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