From owner-freebsd-hackers  Thu Mar 13 07:42:49 1997
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To: bag@sinbin.demos.su (Alex G. Bulushev)
cc: hackers@freebsd.org
Subject: Re: Q about 100Mb ether cards 
In-reply-to: Your message of "Thu, 13 Mar 1997 16:18:27 +0300."
             <199703131318.QAA00365@sinbin.demos.su> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 13 Mar 1997 07:40:36 -0800
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>>    I want to support full duplex in the fxp (Pro/100B) driver, but I haven't
>> been able to get it to work. The Pro/100B is well supported; it's what I'm
>> using in wcarchive and I haven't had any problems. It consumes about half
>> the CPU time that the de driver does and has about the same level of
>> performance (actually slightly better than the DEC chip).
>
>as we found for Intel EE pro/100 in fbsd2.2-G full duplex not supported ...
>in half duplex mode speed up to 4 MByte/sec (via ftp  fbsd<->solaris[sparc])
>
>one problem: soft/hard reset of HUB lead to card freezing (driver?)
>after reboot all ok ...
>HUB: SynOptics 28115

   Yes, this is a known bug in the "rev 1" version of the 82557 chip. The
receiver goes dead whenever it gets certain types of garbage. It should be
fixed in "rev 2" versions, but I haven't verified this.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project