On Sun, 28 Apr 2002, Aurel Wisse wrote:

I am trying to modify the bmac to force the PHY to
abandon autonegotiation and to use 10Mb/s and half
duplex. "Reverse engineering" the bmac code leads
nowhere. The bmac_init_phy doesn't give a lot of info,
except a couple of undocumented constants written via
bmac_mif_write, and the mif_write writes to the MIFCSR
register which is undocumented in the bmac.h file.

This is terribly frustrating as Apple is obviously
able to do it with their Duplex tool hack. Hence, it
*can* be done. Why can't they just send us their
sourcecode for the Duplex tool? Does anybody have a
direct line to Apple?

Looked at the Darwin sources lately?  BMacEnet::miiInitializePHY appears
to describe the "normal" setup in a way that should make it pretty obvious
how to set it up in non-normal ways -- or perhaps not -- I've never dealt
with the chip, personally -- but it's a good starting point, anyway.


Later,
David

---------------------------------------------------------------------
David A. Gatwood                                dgatwood@gatwood.net
Developer Docs Writer                             dgatwood@apple.com
Apple Computer                                  dgatwood@mklinux.org

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