<s>
VirtualAcorn	B-Operating_System
is	O
the	O
brand	O
name	O
of	O
several	O
commercial	O
emulators	B-Application
of	O
Acorn	O
Computers	O
computer	O
hardware	O
platforms	O
.	O
</s>
<s>
VirtualAcorn	B-Operating_System
is	O
developed	O
by	O
Graeme	O
Barnes	O
and	O
Aaron	O
Timbrell	O
.	O
</s>
<s>
It	O
is	O
a	O
commercial	O
version	O
of	O
the	O
freeware	B-License
emulator	B-Application
Red	O
Squirrel	O
,	O
developed	O
by	O
Barnes	O
.	O
</s>
<s>
Virtual	O
A5000	B-Device
is	O
an	O
emulator	B-Application
of	O
Acorn	O
Computers	O
A5000	B-Device
computer	O
.	O
</s>
<s>
It	O
included	O
a	O
copy	O
of	O
RISC	B-Operating_System
OS	I-Operating_System
3.11	I-Operating_System
.	O
</s>
<s>
Virtual	O
A5000	B-Device
was	O
released	O
at	O
BETT	O
2002	O
and	O
stopped	O
shipping	O
in	O
2004	O
.	O
</s>
<s>
It	O
is	O
now	O
commercially	O
available	O
again	O
from	O
riscos.com	O
with	O
the	O
latest	O
version	O
dated	O
2014	O
.	O
</s>
<s>
VirtualRPC	O
is	O
an	O
emulator	B-Application
of	O
Acorn	O
Computers	O
 '	O
Risc	B-Device
PC	I-Device
computer	O
.	O
</s>
<s>
In	O
2003	O
,	O
the	O
developers	O
reached	O
an	O
agreement	O
with	O
RISCOS	B-Operating_System
Ltd	O
to	O
license	O
its	O
OS	O
.	O
</s>
<s>
VirtualRPC	O
comes	O
in	O
four	O
versions	O
,	O
with	O
support	O
for	O
emulating	B-Application
ARM7	O
or	O
ARM7	O
and	O
StrongARM	B-Device
each	O
coming	O
with	O
either	O
RISC	B-Operating_System
OS	I-Operating_System
4.02	O
or	O
RISC	B-Operating_System
OS	I-Operating_System
Adjust	O
4.39	O
.	O
</s>
