If you do not require boot support (i.e. the disks on the 53c875 will be
data disks), then SRM support is not necessary. Once the OS loads, it will
pick up the controller regardless of whether the SRM had recognized it. One
thing to consider is that the device driver (itpsa) under Tru64 that
controls all Symbios chips 875 and later (i.e. 875,895,896,1010) will only
work with adapters licensed explicitly by IntraServer or Compaq. If the
adapter is 875 based and is not seen as licensed by the driver, then we will
pass control off to the psiop driver (the one that controls the 810 SCSI-2
chip), and the psiop driver will run the 875 as if it was an 810 (i.e. at
SCSI-II speeds, not Ultra SCSI speeds).
hope this helps,
Kevin
IntraServer Technology, Inc.
508.429.0425 x 241
mocklin@intraserver.com
http://www.intraserver.com/
> -----Original Message-----
> From: Robert Parnell [mailto:robparnell@yahoo.com]
> Sent: Thursday, January 13, 2000 1:40 AM
> To: axp-list@redhat.com
> Cc: jmd@infinet.com
> Subject: Re: (pc64-275) SRM v4.8 SCSI controllers
>
>
> Hi Jeff,
>
> Thanks for your reply :)
>
> --- jmd <jmd@infinet.com> wrote:
>
> >
> > This was posted a month or so ago:
> >
> > http://ftp.digital.com/pub/DEC/Alpha/firmware/
> >
> > follow the PC64 link.
>
> I did do this and upgraded my SRM console to v4.8.
> The docs on gatekeeper and the SDK still only mention
> the QLogic ISP1020 and NCR 810 - I was wondering
> whether the driver in this SRM would be
> upwards-compatible with the QLA1040/1080 however...
>
> >
> > >
> > > I've also tried a Symbios NCR53c875 controller,
> > but it
> > > was not recognized by the SRM firmware either!
> >
> > I am curious if you can get this controller to work
> > with SRM. Please let
> > me know.
>
> Nope, the NCR53c875 does not work at all :(
>
> sho conf shows the SCSI PCI device, but
>
> sho dev does not show the host adapter or SCSI
> devices...
>
> I've just borrowed a NCR53c810 controller and it was
> recognized immediately - I was rather hoping the
> driver in this SRM would be upwards compatible with
> later > NCR53c810 host adapters since unfortunately I
> still do require a wide/UW SCSI controller.
>
> Thanks again,
> Rob Parnell
>
> PS - I was thinking about posting the original
> question on the tru64-managers-list since I'm sure
> this issue has arisen, especially with the recent
> Compaq Tru64 hobbyist license...
>
> I'm sure other PC64-275 owners are running into this
> SRM/SCSI controller compatibility situation - I'd be
> interested to see how others have resolved this.
>
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