Sleep dies w. illegal instruction on '060

[Rob <dickrp%wckn.dorm.clarkson.edu@localhost>]

Sleep, with the argument 2, 3, or 4 dumps core on my system.
It works fine if I have it wait 1 or 5 seconds.  This is odd.
Have others noticed this problem?  Is this an '060 thing?

-Robert Dick (dickrp%wckn.dorm.clarkson.edu@localhost)-
/*==========================================================================*/
NetBSD-1.2, Generic Kernel, screen-3.7.1
A3000
MK-II '060, 16 M SIMM
4 M SCZIP fast, 2 M DIP chip
Rev 8 WD SCSI chip
SCSI BUS has active terms at both ends