Subject: Re: KA655 on-board ethernet; was: Re: Bragging Time...
To: Tom Ivar Helbekkmo <tih@KPNQwest.NO>
From: Johnny Billquist <bqt@Update.UU.SE>
List: port-vax
Date: 02/14/2000 18:52:59
On 14 Feb 2000, Tom Ivar Helbekkmo wrote:

> Chuck McManis <> writes:
> > The CPU btw is a KA655 which is a really nice CPU, [...]
> I've got one of these (in a BA215) running Ultrix, but there's a
> problem with it: the on-board ethernet is unreliable.  It will
> generate single bit errors in data packets that the networking stack
> don't notice, thus corrupting NFS, ftp transfers, whatever, without
> Ultrix ever realizing that something is wrong.
> Does anyone have any ideas as to what might be wrong?  DMA logic?  A
> CMOS static RAM buffer chip used by the ethernet chip and the DMA
> circuitry?  Something else?  I'd love to get this thing working...

Could be almost anything. The problem is that Ultrix probably runs UDP
without checksums enabled. Otherwise this would be catched.
Change OS atleast. :-)


Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email:           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol