<s>
X00	B-Protocol
was	O
a	O
popular	O
DOS-based	O
FOSSIL	B-Protocol
driver	B-Application
which	O
was	O
commonly	O
used	O
in	O
the	O
mid-1980s	O
to	O
the	O
late	O
1990s	O
and	O
is	O
even	O
still	O
used	O
today	O
.	O
</s>
<s>
FOSSIL	B-Protocol
drivers	O
were	O
mainly	O
used	O
to	O
run	O
BBS	B-Application
software	O
under	O
MS-DOS	B-Application
.	O
</s>
<s>
X00	B-Protocol
can	O
also	O
be	O
run	O
under	O
Windows	B-Application
,	O
or	O
even	O
Linux	B-Application
and	O
DOSEMU	B-Application
environments	O
,	O
to	O
allow	O
FOSSIL-aware	O
MS-DOS	B-Application
based	O
applications	O
to	O
function	O
.	O
</s>
<s>
X00	B-Protocol
was	O
developed	O
by	O
Raymond	O
L	O
.	O
Gwinn	O
from	O
1989	O
until	O
1993	O
.	O
</s>
<s>
X00	B-Protocol
is	O
free	O
for	O
non-commercial	O
usage	O
.	O
</s>
<s>
X00	B-Protocol
included	O
many	O
enhancements	O
to	O
the	O
FOSSIL	B-Protocol
revision	O
5	O
specifications	O
,	O
which	O
were	O
later	O
used	O
in	O
other	O
FOSSIL	B-Protocol
drivers	O
such	O
as	O
ADF	O
and	O
NetFoss	B-Protocol
.	O
</s>
<s>
Gwinn	O
moved	O
on	O
to	O
develop	O
a	O
replacement	O
serial	O
port	O
driver	B-Application
for	O
OS/2	B-Application
called	O
SIO	B-Protocol
.	O
</s>
<s>
SIO	B-Protocol
contained	O
a	O
virtualized	O
FOSSIL	B-Protocol
(	O
VX00	O
)	O
that	O
could	O
be	O
loaded	O
if	O
applications	O
needed	O
FOSSIL	B-Protocol
support	O
.	O
</s>
