<s>
CMS-2	B-Language
is	O
an	O
embedded	B-Architecture
systems	I-Architecture
programming	O
language	O
used	O
by	O
the	O
United	O
States	O
Navy	O
.	O
</s>
<s>
CMS-2	B-Language
was	O
developed	O
primarily	O
for	O
the	O
US	O
Navy	O
’s	O
tactical	O
data	O
systems	O
(	O
NTDS	B-Device
)	O
.	O
</s>
<s>
CMS-2	B-Language
was	O
developed	O
by	O
RAND	O
Corporation	O
in	O
the	O
early	O
1970s	O
and	O
stands	O
for	O
"	O
Compiler	O
Monitor	B-Application
System	O
"	O
.	O
</s>
<s>
The	O
name	O
"	O
CMS-2	B-Language
"	O
is	O
followed	O
in	O
literature	O
by	O
a	O
letter	O
designating	O
the	O
type	O
of	O
target	O
system	O
.	O
</s>
<s>
For	O
example	O
,	O
CMS-2M	O
targets	O
Navy	O
16-bit	O
processors	O
,	O
such	O
as	O
the	O
AN/AYK	B-Device
-14	I-Device
.	O
</s>
<s>
CMS-2	B-Language
was	O
developed	O
for	O
FCPCPAC	O
(	O
Fleet	O
Computer	O
Programming	O
Center	O
-	O
Pacific	O
)	O
in	O
San	O
Diego	O
,	O
CA	O
.	O
</s>
<s>
The	O
language	O
continued	O
to	O
be	O
developed	O
,	O
eventually	O
supporting	O
a	O
number	O
of	O
computers	O
including	O
the	O
AN/UYK	B-Device
-7	I-Device
and	O
AN/UYK	B-Device
-43	I-Device
and	O
UYK-20	O
and	O
UYK-44	O
computers	O
.	O
</s>
<s>
CMS-2	B-Language
was	O
designed	O
to	O
encourage	O
program	O
modularization	O
,	O
permitting	O
independent	O
compilation	O
of	O
portions	O
of	O
a	O
total	O
system	O
.	O
</s>
<s>
A	O
CMS-2	B-Language
program	O
is	O
composed	O
of	O
statements	O
.	O
</s>
<s>
CMS-2	B-Language
statements	O
are	O
free	O
form	O
and	O
terminated	O
by	O
a	O
dollar	O
sign	O
.	O
</s>
<s>
A	O
CMS-2	B-Language
source	O
program	O
is	O
composed	O
of	O
two	O
basic	O
types	O
of	O
statement	O
.	O
</s>
<s>
Data	O
designs	O
and	O
procedures	O
are	O
further	O
grouped	O
to	O
form	O
system	O
elements	O
of	O
a	O
CMS-2	B-Language
program	O
.	O
</s>
<s>
Major	O
CMS-2	B-Language
operators	O
are	O
summarized	O
below	O
.	O
</s>
<s>
Input/output	O
statements	O
provide	O
communication	O
with	O
hardware	O
devices	O
while	O
running	O
in	O
a	O
non-realtime	O
environment	O
under	O
a	O
monitor	B-Application
system	O
.	O
</s>
<s>
The	O
Compiler	O
Monitor	B-Application
System	O
2	O
(	O
CMS-2	B-Language
)	O
was	O
a	O
system	O
that	O
ran	O
on	O
the	O
UNIVAC	O
CP-642B	O
(	O
AN/USQ	B-Device
-20	I-Device
)	O
.	O
</s>
<s>
The	O
system	O
software	O
included	O
the	O
monitor	B-Application
,	O
compiler	O
,	O
librarian	O
,	O
CP-642	B-Device
Loader	O
,	O
tape	O
utility	O
and	O
flow	O
charter	O
.	O
</s>
<s>
A	O
batch	O
processing	O
operating	O
system	O
that	O
controls	O
execution	O
of	O
CMS-2	B-Language
components	O
and	O
user	O
jobs	O
run	O
on	O
the	O
CP-642	B-Device
computer	O
.	O
</s>
<s>
A	O
compiler	O
for	O
the	O
CS-1	O
and	O
CMS-2	B-Language
languages	O
that	O
generates	O
object	O
code	O
for	O
the	O
CP-642	B-Device
,	O
L-304	O
,	O
AN/UYK	B-Device
-7	I-Device
,	O
1830A	O
and	O
1218/1219	O
computers	O
.	O
</s>
<s>
During	O
the	O
1970s	O
there	O
were	O
different	O
versions	O
of	O
the	O
CMS-2	B-Language
compiler	O
,	O
depending	O
on	O
which	O
computer	O
was	O
used	O
to	O
compile	O
the	O
code	O
.	O
</s>
<s>
And	O
the	O
different	O
versions	O
of	O
CMS-2	B-Language
had	O
problems	O
with	O
the	O
debugging	O
tools	O
.	O
</s>
<s>
An	O
extended	O
CMS-2	B-Language
compiler	O
,	O
adding	O
language	O
features	O
for	O
the	O
AN/UYK	B-Device
-7	I-Device
computer	O
.	O
</s>
<s>
It	O
only	O
generates	O
AN/UYK	B-Device
-7	I-Device
object	O
code	O
.	O
</s>
<s>
The	O
flowcharter	O
software	O
processes	O
flowcharter	O
statements	O
in	O
CMS-2	B-Language
source	O
code	O
and	O
outputs	O
a	O
flowchart	O
to	O
a	O
high-speed	O
printer	O
.	O
</s>
