Ref: 08040017
Title: Sperry HT (Leading Edge) & 3+ Compatibility; 5C Int Error
Date:  07-20-88

Copyright 3Com Corporation, 1991.  All rights reserved.

When using 3+ 1.0 with the Sperry (Leading Edge) station, there
is a problem with their internal card scheme.  If you disable the
internal clock jumper (by the disk drives), the system will work.

If you do not disable this jumper, the system locks up at random times
or, when loading NetBIOS, gets a 5C interrupt call error.

It is presumed that this is a problem with later revisions as
well though this has not been verified.
