Here's a transcript of what happens when I try to netboot my SLC:
(netbooting from a pc running i386/1.3)

>b le()

Booting from: le(0,0,0) 

>> NetBSD/sparc Secondary Boot, Revision 1.7

>> (pk@flambard, Fri Jan  2 00:10:58 MET 1998)

boot: client IP address: 172.16.0.9

boot: client name: bock.snork.org

root addr=172.16.0.8 path=/export/bock/root

Booting netbsd @ 0x4000

1376256+116880+73776+[77844+91083]=0x1abca7

console is ttya
Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.  All rights
reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993    The Regents of the
University of California.  All rights reserved.
NetBSD 1.3 (GENERIC) #0: Thu Jan  1 18:26:28 MET 1998   
pk@flambard:/usr/src1/sys/arch/sparc/compile/GENERIC
real mem = 16723968
avail mem = 14217216
using 128 buffers containing 524288 bytes of memory
bootpath: /sbus0/le0
mainbus0 (root): Sun 4/20
cpu0 at mainbus0: MB86900/1A or L64801 @ 20 MHz, WTL3170/2 FPU
cpu0: 64K byte write-through, 16 bytes/line, sw flush: cache enabled
memreg0 at mainbus0 ioaddr 0x

At this point, the machine freezes. If I have it hooked up via ttya, the
Sparc's screen goes black, and all i/o on ttya ceases. If I have the
keyboard plugged in and am using the onboard console, the video goes
wacky and loses sync.

When I first power on the machine, I get something along the lines of:

3e0 bad 3e0 bad 3e0 bad

while it's testing the cache. Then it goes ahead an enables the cache
anyway, and then starts to boot.

Is the cache what's causing the lockup? If so, can I either disable it
or replace it?

-- 
George L. Coulouris - http://www.tc.cornell.edu/~glc5/
NetBSD 1.3 - free, multiplatform unix. http://www.netbsd.org/