<s>
Cromemco	B-Operating_System
DOS	I-Operating_System
or	O
CDOS	O
(	O
an	O
abbreviation	O
for	O
Cromemco	B-Operating_System
Disk	I-Operating_System
Operating	I-Operating_System
System	I-Operating_System
)	O
is	O
a	O
CP/M	B-Application
-like	I-Application
operating	B-General_Concept
system	I-General_Concept
by	O
Cromemco	O
designed	O
to	O
allow	O
users	O
of	O
Cromemco	O
microcomputer	B-Architecture
systems	O
to	O
create	O
and	O
manipulate	O
disk	O
files	O
using	O
symbolic	O
names	O
.	O
</s>
<s>
CDOS	O
was	O
written	O
in	O
Zilog	B-General_Concept
Z80	I-General_Concept
machine	B-Language
code	I-Language
.	O
</s>
<s>
Due	O
to	O
the	O
number	O
of	O
available	O
programs	O
available	O
to	O
run	O
under	O
Digital	B-Application
Research	I-Application
CP/M	I-Application
at	O
that	O
time	O
,	O
CDOS	O
was	O
designed	O
to	O
be	O
upwards	O
CP/M	B-Application
-compatible	O
.	O
</s>
<s>
Many	O
programs	O
written	O
for	O
CP/M	B-Application
versions	O
up	O
to	O
and	O
including	O
version	O
1.33	O
run	O
without	O
modification	O
under	O
CDOS	O
.	O
</s>
<s>
However	O
,	O
programs	O
written	O
for	O
CDOS	O
generally	O
do	O
not	O
run	O
under	O
CP/M	B-Application
.	O
</s>
<s>
The	O
Cromemco	B-Architecture
Z-2	I-Architecture
had	O
the	O
ability	O
to	O
run	O
Cromemco	B-Operating_System
DOS	I-Operating_System
.	O
</s>
<s>
Besides	O
CP/M	B-Application
2.2	O
and	O
Cromix	O
,	O
the	O
Cromemco	O
System	O
One	O
can	O
also	O
run	O
Cromemco	B-Operating_System
DOS	I-Operating_System
.	O
</s>
<s>
The	O
Cromemco	O
C-10	O
personal	B-Device
computer	I-Device
,	O
introduced	O
in	O
1982	O
,	O
also	O
ran	O
CDOS	O
.	O
</s>
<s>
An	O
emulator	B-Application
for	O
a	O
Cromemco	O
CDOS	O
system	O
exists	O
.	O
</s>
<s>
The	O
following	O
list	O
of	O
commands	O
are	O
supported	O
by	O
Cromemco	B-Operating_System
DOS	I-Operating_System
.	O
</s>
<s>
Later	O
versions	O
also	O
support	O
the	O
ATTR	O
command	B-Application
.	O
</s>
<s>
Later	O
versions	O
also	O
support	O
the	O
MEMTEST	O
command	B-Application
.	O
</s>
