Hi,
as I have to shut down the server for OS upgrade, I tried to boot
NetBSD/sparc64 on it. This is an enterprise420, with 4 CPU and 4G RAM.
The install kernel boots to sysinst, so it should be usable under NetBSD.
I could use the network, and mount the solaris root partition.
Here is the boot message:

{0} ok boot net -sv 
Resetting ... 

Sun Enterprise 420R (4 X UltraSPARC-II 450MHz), No Keyboard
OpenBoot 3.23, 4096 MB memory installed, Serial #15249750.
Ethernet address 8:0:20:e8:b1:56, Host ID: 80e8b156.



Rebooting with command: boot net -sv                                  
Boot device: /pci@1f,4000/network@1,1  File and args: -sv
Timeout waiting for ARP/RARP packet
13a00 >> NetBSD/sparc64 OpenFirmware Boot, Revision 
>> (autobuild@cs20.apochromatic.org, Sun May 18 13:04:16 UTC 2003)
bootp: no reply
Using BOOTPARAMS protocol: ip address: 132.227.67.121, hostname: rachmaninov
root addr=132.227.67.21 path=/home/NetBSD/sparc64
loadfile: reading header
elf64_exec: Booting /pci@1f,4000/network@1,1/netbsd
4593216@0x1000000+5395720@0x1800000+2992888@0x1d25508 
symbols @ 0xfff4a300 96 start=0x1000000
chain: calling OF_chain(800000, d2e0, 1000000, fff83a80, 18)
Kernel size exceeds 4MB
console is /pci@1f,4000/ebus@1/se@14,400000:a
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
    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 1.6T (INSTALL) #0: Sun May 18 13:33:22 UTC 2003
        autobuild@cs20.apochromatic.org:/autobuilder/build/HEAD/sparc64/OBJ/autobuilder/build/HEAD/src/sys/arch/sparc64/compile/INSTALL
total memory = 4096 MB
avail memory = 3787 MB
using 14272 buffers containing 204 MB of memory
bootpath: /pci@1f,4000/network@1,1
mainbus0 (root): SUNW,Ultra-80
cpu0 at mainbus0: SUNW,UltraSPARC-II @ 450.027 MHz, version 0 FPU
cpu0: 32K instruction (32 b/l), 16K data (32 b/l), 4096K external (64 b/l)
psycho0 at mainbus0 addr 0xfffb4000
SUNW,psycho: impl 0, version 4: ign 7c0 bus range 0 to 0; PCI bus 0
DVMA map: fe000000 to ffffe000
IOTSB: 12e64000 to 12e6c000
pci0 at psycho0
pci0: i/o space, memory space enabled
ebus0 at pci0 dev 1 function 0
ebus0: Sun Microsystems, Inc. PCIO Ebus2, revision 0x01
auxio0 at ebus0 addr 726000-726003, 728000-728003, 72a000-72a003, 72c000-72c003, 72f000-72f003
power at ebus0 addr 724000-724003 ipl 37 not configured
SUNW,pll at ebus0 addr 504000-504002 not configured
sc at ebus0 addr 500000-500007 not configured
sab0 at ebus0 addr 400000-40007f ipl 43: rev 3.2
sabtty0 at sab0 port 0: console i/o
sabtty1 at sab0 port 1
com0 at ebus0 addr 3083f8-3083ff ipl 41: ns16550a, working fifo
kbd0 at com0
com1 at ebus0 addr 3062f8-3062ff ipl 42: ns16550a, working fifo
ms0 at com1
lpt0 at ebus0 addr 3043bc-3043cb, 300398-300399, 700000-70000f ipl 34
fdthree at ebus0 addr 3023f0-3023f7, 706000-70600f, 720000-720003 ipl 39 not configured
clock0 at ebus0 addr 0-1fff: mk48t59: hostid 80e8b156
flashprom at ebus0 addr 0-fffff not configured
hme0 at pci0 dev 1 function 1: Sun Happy Meal Ethernet, rev. 1
hme0: interrupting at ivec 3021
hme0: Ethernet address 08:00:20:e8:b1:56
ukphy0 at hme0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x0006b8, model 0x000c, rev. 1
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
siop0 at pci0 dev 3 function 0: Symbios Logic 53c875 (ultra-wide scsi)
siop0: using on-board RAM
siop0: interrupting at ivec 20
scsibus0 at siop0: 16 targets, 8 luns per target
siop1 at pci0 dev 3 function 1: Symbios Logic 53c875 (ultra-wide scsi)
siop1: using on-board RAM
siop1: interrupting at ivec 26
scsibus1 at siop1: 16 targets, 8 luns per target
psycho1 at mainbus0 addr 0xfffc6000
SUNW,psycho: impl 0, version 4: ign 7c0 bus range 128 to 128; PCI bus 128
pci1 at psycho1
pci1: i/o space, memory space enabled
timer0 at mainbus0 addr 0xfff9fc00 irq vectors 7ec and 7ed
pcons at mainbus0 not configured
Kernelized RAIDframe activated
md0: internal 5120 KB image area
scsibus0: waiting 2 seconds for devices to settle...
scsibus1: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <FUJITSU, MAG3091L SUN9.0G, 1111> disk fixed
sd0: 8637 MB, 4926 cyl, 27 head, 133 sec, 512 bytes/sect x 17689267 sectors
sd0: sync (50.00ns offset 16), 16-bit (40.000MB/s) transfers, tagged queueing
sd1 at scsibus0 target 1 lun 0: <FUJITSU, MAG3091L SUN9.0G, 1111> disk fixed
sd1: 8637 MB, 4926 cyl, 27 head, 133 sec, 512 bytes/sect x 17689267 sectors
sd1: sync (50.00ns offset 16), 16-bit (40.000MB/s) transfers, tagged queueing
cd0 at scsibus0 target 6 lun 0: <TOSHIBA, DVD-ROM SD-M1401, 1007> cdrom removable
cd0: sync (50.00ns offset 16), 8-bit (20.000MB/s) transfers
root on md0a dumps on md0b
root file system type: ffs
erase ^?, werase ^W, kill ^U, intr ^C

If you are using a SUN type 4 keyboard, please enter "sun-type4".
Terminal type (just hit ENTER for 'sun'): 


-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 24 ans d'experience feront toujours la difference
--