I stumbled across this the other day, Giano, a simulation framework.

Included is a bunch of stuff, like a basic x86 / cepc (with Windows CE 6.0 image), an Xbox 360 emulator, a SPOT emulator, some eval boards (AT91EB63?) with both MIPS and ARM cpus that even include a doom kernel like experience! A Macintosh G5 (I wonder if it’d boot with Apple ROMS..?) Oh and..

A VAX.

The VAX code is taken from SIMH but I guess to show how extensible the framework is, they mashed in enough microvax to get it going.

SIMH in a way you’ve never seen it…

At any rate, here is some other screen shots of Giano in action….

CEPC

And of course….

DOOM

Also buried in there is a new MIPS variant, the emips along with a donated NetBSD port!

Sadly I had no luck running NetBSD….

Default: 0/ace(0,0)/netbsd
boot: 0/ace(1,0)/netbsd
Loading: 0/ace(1,0)/netbsd
5085072+70448=0x4eae14
Starting at 0x80020000

memory segment 0 start 00000000 size 10000000
memory segment 1 start 10000000 size 00100000
Too much memory in cluster 0, trimming memory to range 00000000..08000000
Too much memory, ignoring memory range 10000000..10100000
pmap_steal_memory: seg 0: 0x50b 0x50b 0x7fff 0x7fff
pmap_steal_memory: seg 0: 0x54b 0x54b 0x7fff 0x7fff
pmap_steal_memory: seg 0: 0x54d 0x54d 0x7fff 0x7fff
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009, 2010, 2011
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 5.99.48 (RAMDISK) #0: Tue Mar 15 01:01:14 UTC 2011
[email protected]:/home/builds/ab/HEAD/emips/201103142200Z-obj/home/builds/ab/HEAD/src/sys/arch/emips/compile/RAMDISK
Xilinx ML50x (eMIPS)
total memory = 128 MB
avail memory = 120 MB
sysctl_createv: sysctl_create(no_sa_support) returned 22
mainbus0 (root)
cpu0 at mainbus0: Toshiba or Microsoft eMIPS CPU (0x70401) Rev. 1 with software emulated floating point
cpu0: 64 TLB entries
ebus0 at mainbus0
pid 0(system): trap: cpu0, TLB miss (load or instr. fetch) in kernel mode
status=0x2000000, cause=0x8, epc=0x8002d5c8, vaddr=0xd0000000
tf=0x8054cc78 ksp=0x8054cd18 ra=0x8002d5b8 ppl=0xd0000000
kernel: TLB miss (load or instr. fetch) trap
Stopped in pid 0.1 (system) at 0x8002d5c8: lw v0,0(s0)
db>

Maybe someone else will have better luck.

— edit, it seems Microsoft has a NetBSD 4.01 download, here. And it boots!