Guys,
	It seems that if you plug in a newer (ie. sparc-classic style)
keyboard into an older sun4c (like my Sparcstation SLC 4/20) at boot
the machine can hang at:

found boot device sd0

One has to break to the prom and then just type 'go' to get it out of
the rut. This seems like it may be a console driver bug or a prom
problem of some sort if those routines are being called. The problem
went away immediately when I starting using /dev/ttya as a console
hooked up to a remote machine via the serial port.

Later,
David S. Miller
davem@nadzieja.rutgers.edu