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Re: [Qemu-devel] Network: DEC21040 "tulip" emulation?

From: Christoph Hellwig
Subject: Re: [Qemu-devel] Network: DEC21040 "tulip" emulation?
Date: Thu, 20 Mar 2008 10:03:17 +0100
User-agent: Mutt/1.3.28i

On Tue, Mar 18, 2008 at 08:47:19PM +0100, Adam wrote:
> Hi!
> I wonder if there are any plans for emulating an DEC21040/21140 PCI-type
> NIC?
> We use an old LynxOS 2.3 system at work. The machines and the old
> coax-network is getting old and we still needs the system.
> I've done a transfer to an disk-image and it runs perfectly in QEMU on
> Linux. The only sad thing is that none of the supported nic's have any
> support in LynxOS 2.3
> The cards we currently are using SMC EtherPower PCI who are DEC21040-based.
> But actually, MS VirtualPC 07' that uses DEC21140 emulation i think, it
> works! But it sucks, and it runs at very high cpu-usage even on idle-times
> compared to qemu.
> DEC21040 or "tulip" as it called sometimes i think, is a very popular
> adaptor on various platforms, maybe it would be an good idea to implent
> it..?

Sure.  Implementing PCI drivers for qemu is quite easy, so take a look
at the public 21040 docs aswell as the existing qemu ethernet hardware
emulations and start writing one :)

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