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Re: declance on 2100

To: linux-mips@fnet.fr
Subject: Re: declance on 2100
From: Richard van den Berg <R.vandenBerg@inter.NL.net>
Date: Wed, 6 Jan 1999 18:16:10 +0100 (MET)
In-reply-to: <19990105223012.41667@execpc.com>
On Tue, 5 Jan 1999, Mitchell Blank Jr wrote:

> Thomas Riemer wrote:
> > Interestingly, packets do actually make it to the net - but entirely
> > garbled... 
> 
> That's pretty common - if you have a DMA or shared memory problem but the
> control registers are still reachable you can often send and receive packets
> but with random (or often all 00 or all FF) contents.

That's exactly the problem, the 3 possible LANCE's for DECstations are
onboard in [23]100 codenamed pmax LANCE, onboard in 5000's codenamed
IOASIC LANCE and TURBOchannel option cards codenamed PMAD LANCE and
all 3 use different memory access mechanisms, read the comments in
drivers/net/declance.c. :-)

Regards,
Richard

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