<s>
CrossDOS	B-Application
is	O
a	O
file	B-Application
system	I-Application
handler	O
for	O
accessing	O
FAT	B-Application
formatted	O
media	O
on	O
Amiga	B-Device
computers	I-Device
.	O
</s>
<s>
It	O
was	O
bundled	O
with	O
AmigaOS	B-Application
2.1	O
and	O
later	O
.	O
</s>
<s>
Its	O
function	O
was	O
to	O
allow	O
working	O
with	O
disks	O
formatted	O
for	O
PCs	O
and	O
Atari	B-Device
STs	I-Device
(	O
and	O
others	O
)	O
.	O
</s>
<s>
In	O
the	O
1990s	O
it	O
became	O
a	O
commonly	O
used	O
method	O
of	O
file	O
exchange	O
between	O
Amiga	B-Device
systems	O
and	O
other	O
platforms	O
.	O
</s>
<s>
CrossDOS	B-Application
supported	O
both	O
double	O
density	O
(	O
720KB	O
)	O
and	O
high	O
density	O
(	O
1.44MB	O
)	O
floppy	B-Device
disks	I-Device
on	O
compatible	O
disk	O
drives	O
.	O
</s>
<s>
As	O
with	O
AmigaDOS	B-Operating_System
disk	O
handling	O
,	O
it	O
allowed	O
automatic	O
disk-change	O
detection	O
for	O
FAT	B-Application
formatted	O
floppy	B-Device
disks	I-Device
.	O
</s>
<s>
The	O
file	B-Application
system	I-Application
was	O
also	O
used	O
with	O
hard	B-Device
disks	I-Device
and	O
other	O
media	O
for	O
which	O
CrossDOS	B-Application
provided	O
hard	B-Device
disk	I-Device
configuration	O
software	O
.	O
</s>
<s>
However	O
,	O
the	O
versions	O
of	O
CrossDOS	B-Application
bundled	O
with	O
AmigaOS	B-Application
did	O
not	O
support	O
long	O
filenames	O
,	O
an	O
extension	O
to	O
FAT	B-Application
that	O
was	O
introduced	O
with	O
Microsoft	O
's	O
Windows	B-Application
95	I-Application
.	O
</s>
<s>
CrossDOS	B-Application
was	O
originally	O
developed	O
as	O
a	O
stand-alone	O
commercial	O
product	O
by	O
Consultron	O
,	O
which	O
was	O
available	O
for	O
AmigaOS	B-Application
1.2	O
and	O
1.3	O
.	O
</s>
<s>
In	O
1992	O
Commodore	O
included	O
a	O
version	O
of	O
CrossDOS	B-Application
with	O
AmigaOS	B-Application
2.1	O
(	O
and	O
with	O
later	O
versions	O
)	O
,	O
so	O
that	O
users	O
could	O
work	O
with	O
PC	O
formatted	O
disks	O
.	O
</s>
<s>
In	O
fact	O
,	O
the	O
bundled	O
version	O
will	O
also	O
work	O
with	O
version	O
2.0	O
of	O
AmigaOS	B-Application
.	O
</s>
<s>
The	O
bundled	O
CrossDOS	B-Application
replaced	O
an	O
obscure	O
tool	O
in	O
earlier	O
versions	O
of	O
AmigaOS	B-Application
that	O
could	O
access	O
FAT	B-Application
formatted	O
disks	O
on	O
a	O
secondary	O
floppy	B-Device
disk	I-Device
drive	I-Device
only	O
(	O
this	O
tool	O
was	O
not	O
a	O
complete	O
file	B-Application
system	I-Application
but	O
a	O
user	O
program	O
to	O
read	O
files	O
from	O
a	O
FAT	B-Application
formatted	O
disk	O
)	O
.	O
</s>
<s>
Development	O
of	O
CrossDOS	B-Application
continued	O
after	O
being	O
bundled	O
with	O
the	O
OS	O
.	O
</s>
<s>
CrossDOS	B-Application
7	O
was	O
the	O
last	O
version	O
released	O
and	O
included	O
support	O
for	O
long	O
filenames	O
and	O
other	O
features	O
not	O
available	O
in	O
the	O
bundled	O
version	O
.	O
</s>
