<s>
Xcopilot	B-Application
is	O
a	O
Palm	B-Device
Pilot	I-Device
emulator	O
that	O
runs	O
under	O
Unix/X11	O
.	O
</s>
<s>
It	O
offers	O
emulation	O
of	O
the	O
timer	O
,	O
serial	B-Protocol
ports	I-Protocol
,	O
touch	O
pad	O
and	O
LCD	O
along	O
with	O
Motorola	B-Device
68000	I-Device
emulation	O
(	O
m68k	O
)	O
,	O
specifically	O
the	O
Freescale	B-Device
DragonBall	I-Device
used	O
in	O
Palm	B-Device
Pilots	I-Device
until	O
they	O
switched	O
to	O
Intel	B-Application
XScale	I-Application
ARM	O
processors	O
(	O
later	O
DragonBalls	B-Device
were	O
based	O
on	O
an	O
ARM	O
core	O
not	O
a	O
68000	B-Device
but	O
retained	O
the	O
same	O
name	O
,	O
however	O
were	O
not	O
used	O
by	O
Palm	O
.	O
)	O
</s>
<s>
Xcopilot	B-Application
was	O
originally	O
developed	O
by	O
Ivan	O
Curtis	O
with	O
contributions	O
from	O
Ian	O
Goldberg	O
,	O
Jef	O
Dionne	O
,	O
Kresten	O
Krab	O
Thorup	O
,	O
and	O
Andrew	O
Pfiffer	O
based	O
on	O
the	O
Windows	B-Application
program	O
Copilot	O
.	O
</s>
<s>
While	O
the	O
original	O
Copilot	O
application	O
eventually	O
turned	O
into	O
the	O
Palm	B-Application
OS	I-Application
Emulator	I-Application
,	O
the	O
Unix/X11	O
port	O
branched	O
off	O
and	O
enjoyed	O
its	O
own	O
popularity	O
.	O
</s>
<s>
Written	O
in	O
1997	O
,	O
Xcopilot	B-Application
was	O
aimed	O
at	O
developers	O
of	O
applications	O
on	O
the	O
Palm	B-Operating_System
OS	I-Operating_System
platform	O
,	O
freeing	O
them	O
from	O
the	O
drudgery	O
of	O
interfacing	O
to	O
the	O
real	O
hardware	O
during	O
the	O
development	O
process	O
.	O
</s>
<s>
Xcopilot	B-Application
found	O
a	O
new	O
role	O
in	O
the	O
2000s	O
with	O
the	O
development	O
of	O
uCLinux	B-Application
,	O
a	O
version	O
of	O
Linux	O
meant	O
for	O
very	O
low-end	O
microprocessors	O
without	O
an	O
MMU	B-General_Concept
.	O
</s>
<s>
Today	O
Xcopilot	B-Application
is	O
no	O
longer	O
maintained	O
but	O
is	O
still	O
useful	O
for	O
trying	O
out	O
uClinux	B-Application
.	O
</s>
