<s>
MACRO-11	B-Device
is	O
an	O
assembly	B-Language
language	I-Language
with	O
macro	O
facilities	O
,	O
designed	O
for	O
PDP-11	B-Device
minicomputer	B-Architecture
family	O
from	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
Program	O
Assembler	B-Language
Loader	O
(	O
PAL-11R	B-Device
)	O
,	O
an	O
earlier	O
version	O
of	O
the	O
PDP-11	B-Device
assembly	B-Language
language	I-Language
without	O
macro	O
facilities	O
.	O
</s>
<s>
MACRO-11	B-Device
was	O
supported	O
on	O
all	O
DEC	B-Device
PDP-11	I-Device
operating	O
systems	O
.	O
</s>
<s>
PDP-11	B-Device
Unix	B-Application
systems	I-Application
also	O
include	O
an	O
assembler	B-Language
(	O
named	O
as	B-Device
)	O
,	O
structurally	O
similar	O
to	O
MACRO-11	B-Device
,	O
but	O
with	O
different	O
syntax	O
and	O
fewer	O
features	O
.	O
</s>
<s>
The	O
MACRO-11	B-Device
assembler	B-Language
(	O
and	O
programs	O
created	O
by	O
it	O
)	O
could	O
also	O
run	O
under	O
the	O
RSX-11	B-Application
compatibility	O
mode	O
of	O
OpenVMS	B-Operating_System
on	O
VAX	B-Device
.	O
</s>
<s>
program	O
in	O
PDP-11	B-Device
macro	O
assembler	B-Language
,	O
to	O
run	O
under	O
RT-11	B-Operating_System
:	O
</s>
<s>
The	O
.MCALL	O
pseudo-op	O
warns	O
the	O
assembler	B-Language
that	O
the	O
code	O
will	O
be	O
using	O
the	O
.TTYOUT	O
and	O
.EXIT	O
macros	O
.	O
</s>
<s>
The	O
.TTYOUT	O
and	O
.EXIT	O
macros	O
are	O
defined	O
in	O
the	O
standard	O
system	O
macro	O
library	O
to	O
expand	O
to	O
the	O
EMT	O
instructions	O
to	O
call	O
the	O
RT-11	B-Operating_System
monitor	O
to	O
perform	O
the	O
requested	O
functions	O
.	O
</s>
<s>
If	O
this	O
file	O
is	O
,	O
the	O
RT-11	B-Operating_System
commands	B-Application
to	O
assemble	O
,	O
link	O
and	O
run	O
(	O
with	O
console	O
output	O
shown	O
)	O
are	O
as	B-Device
follows	O
:	O
</s>
<s>
For	O
a	O
more	O
complicated	O
example	O
of	O
MACRO-11	B-Device
code	O
,	O
two	O
examples	O
chosen	O
at	O
random	O
are	O
Kevin	O
Murrell	O
's	O
KPUN.MAC	O
,	O
or	O
Farba	O
Research	O
's	O
JULIAN	O
routine	O
.	O
</s>
<s>
More	O
extensive	O
libraries	O
of	O
PDP-11	B-Device
code	O
can	O
be	O
found	O
in	O
the	O
Metalab	O
freeware	O
and	O
Trailing	O
Edge	O
archives	O
.	O
</s>
