From owner-freebsd-hackers  Tue Dec 31 11:02:39 1996
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Date: Tue, 31 Dec 1996 14:02:35 -0500 (EST)
From: John Fieber <jfieber@indiana.edu>
To: hackers@freebsd.org
Subject: New motherboard breaks tape drive
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I have an Archive Viper 150 tape drive that has served me well
for many years.  I have never had difficulty getting the maximum
performance of about 100K/second writing speed from it...

...until upgrade my old 486DX33 motherboard to a Pentium 100
(ASUS).  Now the tape drive will no longer stream and typical
writing speed has dropped to about 50K/second. 

My first thought was something with the new SCSI controller (ASUS
SC200) was the problem so I put my old Adaptec 1542C in, but the
result was the same (I even tried putting the drive alone on the
bus). I tried team, but it didn't help. 

I'm fishing for where to look next.  Ideas?

-john