<s>
Interlisp	B-Language
(	O
also	O
seen	O
with	O
a	O
variety	O
of	O
capitalizations	O
)	O
is	O
a	O
programming	B-Application
environment	I-Application
built	O
around	O
a	O
version	O
of	O
the	O
programming	O
language	O
Lisp	B-Language
.	O
</s>
<s>
Interlisp	B-Language
development	O
began	O
in	O
1966	O
at	O
Bolt	O
,	O
Beranek	O
and	O
Newman	O
(	O
renamed	O
BBN	O
Technologies	O
)	O
in	O
Cambridge	O
,	O
Massachusetts	O
with	O
Lisp	B-Language
implemented	O
for	O
the	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
PDP-1	B-Device
computer	O
by	O
Danny	O
Bobrow	O
and	O
D	O
.	O
L	O
.	O
Murphy	O
.	O
</s>
<s>
In	O
1970	O
,	O
Alice	O
K	O
.	O
Hartley	O
implemented	O
BBN	B-Language
LISP	I-Language
,	O
which	O
ran	O
on	O
PDP-10	B-Device
machines	O
running	O
the	O
operating	B-General_Concept
system	I-General_Concept
TENEX	B-Operating_System
(	O
renamed	O
TOPS-20	B-Operating_System
)	O
.	O
</s>
<s>
In	O
1973	O
,	O
when	O
Danny	O
Bobrow	O
,	O
Warren	O
Teitelman	O
and	O
Ronald	O
Kaplan	O
moved	O
from	O
BBN	O
to	O
the	O
Xerox	O
Palo	O
Alto	B-Device
Research	O
Center	O
(	O
PARC	O
)	O
,	O
it	O
was	O
renamed	O
Interlisp	B-Language
.	O
</s>
<s>
Interlisp	B-Language
became	O
a	O
popular	O
Lisp	B-Language
development	O
tool	O
for	O
artificial	B-Application
intelligence	I-Application
(	O
AI	B-Application
)	O
researchers	O
at	O
Stanford	O
University	O
and	O
elsewhere	O
in	O
the	O
community	O
of	O
the	O
Defense	O
Advanced	O
Research	O
Projects	O
Agency	O
(	O
DARPA	O
)	O
.	O
</s>
<s>
Interlisp	B-Language
was	O
notable	O
for	O
integrating	O
interactive	O
development	O
tools	O
into	O
an	O
integrated	B-Application
development	I-Application
environment	I-Application
(	O
IDE	O
)	O
,	O
such	O
as	O
a	O
debugger	B-Application
,	O
an	O
automatic	O
correction	O
tool	O
for	O
simple	O
errors	O
(	O
via	O
do	O
what	O
I	O
mean	O
(	O
DWIM	O
)	O
software	O
design	O
)	O
,	O
and	O
analysis	O
tools	O
.	O
</s>
<s>
At	O
Xerox	O
PARC	O
,	O
an	O
early	O
attempt	O
was	O
made	O
to	O
define	O
a	O
virtual	B-Architecture
machine	I-Architecture
to	O
facilitate	O
porting	O
,	O
termed	O
the	O
Interlisp	B-Language
virtual	B-Architecture
machine	I-Architecture
.	O
</s>
<s>
Peter	O
Deutsch	O
defined	O
a	O
byte-coded	O
instruction	O
set	O
for	O
Interlisp	B-Language
,	O
and	O
implemented	O
it	O
as	O
a	O
microcode	B-Device
emulator	O
for	O
the	O
Xerox	B-Device
Alto	I-Device
.	O
</s>
<s>
Interlisp	B-Language
implementations	O
for	O
these	O
were	O
known	O
collectively	O
as	O
Interlisp-D	B-Language
.	O
</s>
<s>
Commercially	O
,	O
these	O
were	O
sold	O
as	O
Lisp	B-Operating_System
machines	I-Operating_System
and	O
branded	O
as	O
Xerox	O
AI	B-Application
Workstations	O
when	O
Larry	O
Masinter	O
was	O
the	O
chief	O
scientist	O
of	O
that	O
group	O
.	O
</s>
<s>
The	O
same	O
designs	O
,	O
but	O
with	O
different	O
software	O
,	O
were	O
also	O
sold	O
under	O
different	O
names	O
(	O
e.g.	O
,	O
when	O
running	O
the	O
Viewpoint	O
system	O
,	O
the	O
1186	O
Daybreak	O
was	O
sold	O
as	O
the	O
Xerox	B-Device
6085	I-Device
.	O
)	O
</s>
<s>
Releases	O
of	O
Interlisp-D	B-Language
were	O
named	O
according	O
to	O
a	O
musical	O
theme	O
,	O
which	O
ended	O
with	O
Koto	O
,	O
Lyric	O
,	O
and	O
Medley	O
.	O
</s>
<s>
Later	O
versions	O
included	O
an	O
implementation	O
of	O
pre-American	O
National	O
Standards	O
Institute	O
(	O
ANSI	O
)	O
Common	B-Language
Lisp	I-Language
,	O
named	O
Xerox	O
Common	B-Language
Lisp	I-Language
.	O
</s>
<s>
LOOPS	O
,	O
the	O
object	B-Language
system	I-Language
for	O
Interlisp-D	B-Language
,	O
became	O
,	O
along	O
with	O
Symbolics	O
 '	O
Flavors	B-Language
system	O
,	O
the	O
basis	O
for	O
the	O
Common	B-Application
Lisp	I-Application
Object	I-Application
System	I-Application
(	O
CLOS	B-Application
)	O
.	O
</s>
<s>
In	O
1974	O
,	O
DARPA	O
awarded	O
a	O
contract	O
to	O
the	O
University	O
of	O
California	O
,	O
San	O
Diego	O
(	O
UCSD	O
)	O
to	O
implement	O
Interlisp	B-Language
on	O
the	O
Burroughs	B-Device
B6700	I-Device
.	O
</s>
<s>
The	O
motivation	O
was	O
the	O
larger	O
virtual	O
memory	O
addressing	O
space	O
afforded	O
by	O
the	O
B6700	O
architecture	O
compared	O
to	O
the	O
PDP-10	B-Device
.	O
</s>
<s>
However	O
,	O
by	O
the	O
time	O
the	O
software	O
was	O
released	O
(	O
1975	O
)	O
,	O
the	O
PDP-10	B-Device
'	O
s	O
address	O
space	O
had	O
been	O
increased	O
,	O
and	O
Interlisp-10	B-Language
remained	O
the	O
standard	O
of	O
the	O
day	O
for	O
AI	B-Application
research	I-Application
.	O
</s>
<s>
UCSD	O
Interlisp	B-Language
included	O
a	O
compiler	O
which	O
emitted	O
"	O
p-code	O
"	O
,	O
which	O
was	O
could	O
be	O
intermixed	O
with	O
standard	O
LISP	B-Language
code	O
during	O
interpretation	O
.	O
</s>
<s>
This	O
p-code	O
appears	O
to	O
have	O
preceded	O
UCSD	B-Language
Pascal	I-Language
p-code	O
by	O
a	O
year	O
or	O
two	O
.	O
</s>
<s>
The	O
PDP-10	B-Device
version	O
of	O
Interlisp	B-Language
became	O
Interlisp-10	B-Language
;	O
BBN	O
had	O
an	O
internal	O
project	O
to	O
build	O
Interlisp-Jericho	O
and	O
there	O
was	O
a	O
1982	O
port	O
to	O
Berkeley	B-Operating_System
Software	I-Operating_System
Distribution	I-Operating_System
(	O
BSD	B-Operating_System
)	O
Unix	B-Application
on	O
the	O
VAX	B-Device
by	O
Stanford	O
University	O
,	O
Information	O
Sciences	O
Institute	O
(	O
ISI	O
)	O
and	O
Xerox	O
PARC	O
,	O
called	O
Interlisp-VAX	O
.	O
</s>
<s>
In	O
1981	O
,	O
Warren	O
Teitelman	O
and	O
Larry	O
Masinter	O
published	O
a	O
paper	O
on	O
Interlisp	B-Language
in	O
IEEE	O
Computer	O
providing	O
an	O
overview	O
of	O
the	O
system	O
and	O
its	O
design	O
philosophy	O
,	O
setting	O
starts	O
used	O
for	O
the	O
platform	O
.	O
</s>
<s>
Also	O
in	O
1981	O
,	O
a	O
variant	O
for	O
the	O
MOS	B-General_Concept
Technology	I-General_Concept
6502	I-General_Concept
processor	O
,	O
INTER-LISP/65	O
,	O
was	O
released	O
by	O
Datasoft	B-Application
for	O
the	O
Atari	B-Device
800	I-Device
.	O
</s>
<s>
In	O
1985	O
to	O
1987	O
,	O
a	O
team	O
from	O
Fuji	O
Xerox	O
developed	O
an	O
implementation	O
of	O
the	O
microcoded	B-Device
bytecode	O
interpreter	B-Application
in	O
the	O
language	O
C	B-Language
,	O
and	O
,	O
together	O
with	O
Xerox	O
AI	B-Application
Systems	O
(	O
XAIS	O
)	O
in	O
Sunnyvale	O
,	O
California	O
,	O
completed	O
the	O
port	O
of	O
the	O
environment	O
and	O
emulator	O
to	O
the	O
Sun	O
Microsystems	O
SPARC	B-Architecture
4	O
architecture	O
.	O
</s>
<s>
Interlisp-D	B-Language
release	O
timeline	O
:	O
</s>
<s>
In	O
1992	O
,	O
an	O
Association	O
for	O
Computing	O
Machinery	O
(	O
ACM	O
)	O
Software	O
System	O
Award	O
recognized	O
the	O
team	O
of	O
Daniel	O
G	O
.	O
Bobrow	O
,	O
Richard	O
R	O
.	O
Burton	O
,	O
L	O
.	O
Peter	O
Deutsch	O
,	O
Ronald	O
Kaplan	O
,	O
Larry	O
Masinter	O
,	O
Warren	O
Teitelman	O
for	O
their	O
pioneering	O
work	O
on	O
Interlisp	B-Language
.	O
</s>
<s>
The	O
Medley	O
Interlisp	B-Language
source	O
code	O
and	O
the	O
source	O
code	O
for	O
the	O
virtual	B-Architecture
machine	I-Architecture
emulator	O
have	O
both	O
been	O
open-sourced	O
by	O
the	O
.	O
</s>
