Subject: Re: Config of PCI-SCSI hostadapters in an Alpha 255/300
To: NetBSD alpha <>
From: Steve Kirk <>
List: port-alpha
Date: 02/01/2006 15:02:56
On Tue, Jan 31, 2006 at 09:53:58PM +0100, Manuel Bouyer wrote:
> On Mon, Jan 30, 2006 at 04:10:56PM +0100, Uwe Lienig wrote:
> > Dear all NetBSD alpha users,
> > 
> > To replace my old DEC 5000/125 mail server that gets more and more 
> > behind its task I thought of putting together a AlphaStation 255/300 

> > 1. Which one to use?
> >    I have a spare Dawicontrol DC-2976UW, which uses a NCR 53C875E.
> >    NetBSD-2.1 configures this card perfectly, but is it tested
> >    thouroughly?
> Yes. All my SCSI boxes uses NCR controllers (875, 895 and 1010),
> some of them with 36 drives over 6 busses.
> >    ahc0: aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs
> >    scsibus1 at ahc0: 16 targets, 8 luns per target
> > 
> > 2. What about the BIOS config these cards offer under PC-BIOSes?
> >    Do I have to switch off the SCSI-BIOS. How should I configure
> >    the SCSI hostadapter under the PC-BIOS. The Dawicontrol does not
> >    offer a lot of config settings. The Adaptec has a lot of settings.
> >    Will the Alpha SRM use or even touch these settings?
> The SRM should work properly with the NCR controller, or it won't touch
> the PC settings. It won't probably not handle the Adaptec, and won't touch
> the setting either.

When I first received my AlphaServer 1200, this system had an Adaptec
2940UW SCSI controller. The SRM console just saw this as an
unrecognised SCSI device, and could not use it to boot.
If I booted of another recognised device, the Adaptec card was
recognised as an ahc device, and worked fine.

This was the case with the adaptec card after an upgrade to SRM v6.0-4