<s>
BATCH-11/DOS	B-Operating_System
-11	I-Operating_System
,	O
also	O
known	O
simply	O
as	O
DOS-11	B-Operating_System
,	O
is	O
a	O
discontinued	O
operating	B-General_Concept
system	I-General_Concept
by	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
of	O
Maynard	O
,	O
Massachusetts	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
DOS-11	B-Operating_System
(	O
V08-02	O
)	O
was	O
released	O
in	O
1970	O
and	O
was	O
the	O
first	O
operating	B-General_Concept
system	I-General_Concept
to	O
run	O
on	O
the	O
Digital	O
PDP-11	B-Device
minicomputer	B-Architecture
.	O
</s>
<s>
DOS-11	B-Operating_System
was	O
not	O
known	O
to	O
be	O
easy	O
to	O
use	O
even	O
in	O
its	O
day	O
and	O
became	O
much	O
less	O
used	O
in	O
1973	O
with	O
the	O
release	O
of	O
the	O
RT-11	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
DOS-11	B-Operating_System
included	O
:	O
</s>
<s>
DOS-11	B-Operating_System
came	O
with	O
XXDP	O
,	O
a	O
diagnostics	O
and	O
monitor	O
program	O
for	O
the	O
PDP-11	B-Device
.	O
</s>
<s>
Like	O
other	O
Digital	O
operating	B-General_Concept
systems	I-General_Concept
,	O
DOS-11	B-Operating_System
also	O
had	O
a	O
FORTRAN-IV	O
(	O
Ansi-66	O
)	O
compiler	B-Language
.	O
</s>
<s>
FORTRAN-IV	O
was	O
not	O
supported	O
on	O
PDP-11	B-Device
systems	O
with	O
less	O
than	O
12K	O
of	O
memory	O
.	O
</s>
<s>
DOS-11	B-Operating_System
systems	O
running	O
in	O
8K	O
and	O
12K	O
configurations	O
ran	O
a	O
limited	O
version	O
of	O
the	O
MACRO-11	B-Device
Assembler	B-Application
(	O
PAL-11R	B-Device
in	O
overlaid	O
form	O
)	O
.	O
</s>
<s>
The	O
DOS-11	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
kernel	O
was	O
one	O
file	O
called	O
MONLIB.LCL	O
.	O
</s>
<s>
An	O
LICIL	O
could	O
be	O
stored	O
on	O
any	O
type	O
of	O
media	O
that	O
the	O
DOS-11	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
was	O
distributed	O
on	O
(	O
disk	O
,	O
DECtape	O
,	O
punched	O
tape	O
or	O
magnetic	O
tape	O
)	O
.	O
</s>
<s>
Core	O
,	O
was	O
the	O
term	O
for	O
the	O
core	B-General_Concept
memory	I-General_Concept
systems	O
common	O
to	O
the	O
PDP-11	B-Device
.	O
</s>
<s>
A	O
MONLIBCIL	O
typically	O
contained	O
the	O
resident	B-Application
monitor	I-Application
(	O
RMON	O
)	O
,	O
the	O
keyboard	O
command	O
routine	O
,	O
device	O
drivers	O
,	O
EMT	O
routines	O
,	O
the	O
clock	O
routines	O
and	O
the	O
transient	O
monitor	O
.	O
</s>
<s>
DOS-11	B-Operating_System
was	O
used	O
to	O
compile	B-Language
and	O
install	O
early	O
versions	O
of	O
the	O
RSTS-11	B-Operating_System
and	O
RSTS/E	B-Operating_System
operating	B-General_Concept
systems	I-General_Concept
however	O
it	O
is	O
an	O
ancestor	O
to	O
the	O
RSX-11	B-Application
family	O
of	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
