[tulip-bug] Collision detection

[Tim]

Hello,

        I'm looking for a method of seeing a collision on a network in
rx mode
only.  I'm using the tulip driver on the 21143 and cant seem to show any
collisions.  Usually you will only see collisions while transmitting,
but what I'm trying to do is detect them whilst in rx only.  I was
thinking I could try to pass up the 'jam' bits but cant seem to get the
driver to do so.  Ive set the correct csr to pass all frames including
bad ones...Any ideas?

Tim