<s>
The	O
VAXstation	B-Device
is	O
a	O
discontinued	O
family	O
of	O
workstation	B-Device
computers	I-Device
developed	O
and	O
manufactured	O
by	O
Digital	O
Equipment	O
Corporation	O
using	O
processors	O
implementing	O
the	O
VAX	B-Device
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
.	O
</s>
<s>
VAXstation	B-Device
systems	O
were	O
typically	O
shipped	O
with	O
either	O
the	O
OpenVMS	B-Operating_System
or	O
ULTRIX	B-Operating_System
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Many	O
members	O
of	O
the	O
VAXstation	B-Device
family	O
had	O
corresponding	O
MicroVAX	B-Device
variants	O
,	O
which	O
primarily	O
differ	O
by	O
the	O
lack	O
of	O
graphics	O
hardware	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
100	I-Device
was	O
a	O
VAXstation-branded	O
graphics	B-General_Concept
terminal	I-General_Concept
introduced	O
in	O
May	O
1983	O
.	O
</s>
<s>
It	O
used	O
a	O
Motorola	B-Device
68000	I-Device
microprocessor	I-Device
and	O
connected	O
to	O
its	O
VAX	B-Device
host	O
via	O
Unibus	B-Device
.	O
</s>
<s>
It	O
was	O
used	O
for	O
developing	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
The	O
VAXstation	B-Device
500	O
was	O
a	O
VAXstation-branded	O
successor	O
to	O
the	O
VAXstation	B-Device
100	I-Device
with	O
color	O
graphics	O
,	O
introduced	O
in	O
October	O
1985	O
.	O
</s>
<s>
It	O
consisted	O
of	O
a	O
MicroVAX	B-Device
I	O
and	O
a	O
Tektronix	O
4125	O
colour	O
terminal	O
.	O
</s>
<s>
Introduced	O
in	O
October	O
1984	O
,	O
it	O
was	O
code	O
named	O
"	O
Seahorse	O
"	O
,	O
and	O
used	O
the	O
KD32	O
CPU	O
module	O
containing	O
a	O
4MHz	O
(	O
250	O
ns	O
)	O
MicroVAX	B-Device
I	O
processor	O
.	O
</s>
<s>
Code	O
named	O
"	O
Mayflower	O
"	O
,	O
it	O
used	O
the	O
KA630	O
CPU	O
module	O
containing	O
a	O
5MHz	O
(	O
200	O
ns	O
)	O
MicroVAX	B-Device
78032	I-Device
microprocessor	B-Architecture
.	O
</s>
<s>
It	O
was	O
essentially	O
a	O
MicroVAX	B-Device
II	O
in	O
a	O
workstation	B-Device
configuration	O
.	O
</s>
<s>
A	O
short-lived	O
,	O
lower-cost	O
"	O
Reduced	O
Configuration	O
"	O
variant	O
of	O
the	O
VAXstation	B-Device
II	O
.	O
</s>
<s>
Compared	O
with	O
the	O
standard	O
VAXstation	B-Device
II	O
,	O
a	O
number	O
of	O
the	O
slots	O
on	O
the	O
backplane	O
were	O
filled	O
with	O
epoxy	O
to	O
limit	O
the	O
system	O
's	O
upgradability	O
.	O
</s>
<s>
It	O
was	O
discontinued	O
when	O
Digital	O
discovered	O
that	O
enterprising	O
customers	O
were	O
removing	O
the	O
epoxy	O
,	O
or	O
replacing	O
the	O
backplane	O
in	O
order	O
to	O
convert	O
the	O
RC	O
into	O
a	O
standard	O
VAXstation	B-Device
II	O
.	O
</s>
<s>
Introduced	O
in	O
December	O
1985	O
,	O
it	O
was	O
code	O
named	O
"	O
Caylith	O
"	O
,	O
and	O
was	O
a	O
variant	O
of	O
the	O
VAXstation	B-Device
II	O
with	O
hardware-enhanced	O
,	O
high-performance	O
color	O
graphics	O
.	O
</s>
<s>
Introduced	O
in	O
February	O
1987	O
,	O
it	O
was	O
code	O
named	O
"	O
VAXstar	O
"	O
or	O
"	O
Kapri	O
"	O
,	O
and	O
used	O
the	O
KA410	O
CPU	O
module	O
containing	O
a	O
5MHz	O
MicroVAX	B-Device
II	O
processor	O
with	O
no	O
cache	O
.	O
</s>
<s>
It	O
was	O
essentially	O
a	O
MicroVAX	B-Device
2000	O
in	O
a	O
workstation	B-Device
configuration	O
.	O
</s>
<s>
Code	O
named	O
"	O
PVAX	O
"	O
,	O
it	O
used	O
the	O
KA42-A	O
CPU	O
module	O
containing	O
an	O
11.12MHz	O
(	O
90	O
ns	O
)	O
CVAX	B-Device
microprocessor	B-Architecture
with	O
a	O
64KB	O
external	O
cache	O
.	O
</s>
<s>
The	O
VT1300	O
X	B-Protocol
terminal	I-Protocol
was	O
essentially	O
a	O
diskless	O
VAXstation	B-Device
3100	O
Model	O
30	O
,	O
running	O
the	O
VAXELN	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Code	O
named	O
"	O
PVAX	O
rev	O
#7	O
"	O
,	O
it	O
used	O
the	O
KA42-B	O
CPU	O
module	O
containing	O
a	O
16.67MHz	O
(	O
60	O
ns	O
)	O
CVAX+	B-Device
microprocessor	B-Architecture
with	O
a	O
64KB	O
external	O
cache	O
.	O
</s>
<s>
Code	O
named	O
"	O
PVAX	O
"	O
,	O
it	O
used	O
the	O
KA42-A	O
CPU	O
module	O
containing	O
an	O
11.12MHz	O
(	O
90	O
ns	O
)	O
CVAX	B-Device
microprocessor	B-Architecture
with	O
a	O
64KB	O
external	O
cache	O
.	O
</s>
<s>
Code	O
named	O
"	O
PVAX	O
rev	O
#7	O
"	O
,	O
it	O
used	O
the	O
KA42-B	O
CPU	O
module	O
containing	O
a	O
16.67MHz	O
(	O
60	O
ns	O
)	O
CVAX+	B-Device
microprocessor	B-Architecture
with	O
a	O
64KB	O
external	O
cache	O
.	O
</s>
<s>
Code	O
named	O
"	O
RigelMAX	O
"	O
,	O
it	O
used	O
the	O
KA43-A	O
CPU	O
module	O
containing	O
a	O
35.71MHz	O
(	O
28	O
ns	O
)	O
Rigel	O
microprocessor	B-Architecture
with	O
a	O
128KB	O
external	O
cache	O
.	O
</s>
<s>
The	O
VXT	O
2000	O
was	O
an	O
X	B-Protocol
terminal	I-Protocol
using	O
the	O
SOC	B-Device
microprocessor	B-Architecture
.	O
</s>
<s>
This	O
system	O
was	O
essentially	O
a	O
VAXstation	B-Device
3100	O
Model	O
30	O
without	O
any	O
mass	O
storage	O
and	O
set	O
up	O
to	O
network	O
boot	O
a	O
VAXeln	B-Operating_System
image	O
that	O
allowed	O
it	O
to	O
be	O
an	O
X-Windows	B-Operating_System
terminal	O
.	O
</s>
<s>
Code	O
named	O
"	O
Mayfair/GPX	O
"	O
,	O
it	O
used	O
the	O
KA650	O
CPU	O
module	O
containing	O
a	O
CVAX	B-Device
chip	O
set	O
operating	O
at	O
11.12MHz	O
(	O
90	O
ns	O
cycle	O
time	O
)	O
with	O
64KB	O
of	O
external	O
secondary	O
cache	O
.	O
</s>
<s>
As	O
such	O
,	O
they	O
were	O
effectively	O
workstation	B-Device
configurations	O
of	O
the	O
MicroVAX	B-Device
III	O
and	O
MicroVAX	B-Device
3500	O
respectively	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
3520	O
and	O
VAXstation	B-Device
3540	O
,	O
code	O
named	O
"	O
Firefox	O
"	O
,	O
were	O
multiprocessor	O
computers	O
with	O
two	O
or	O
four	O
CVAX	B-Device
chip	O
sets	O
respectively	O
,	O
contained	O
on	O
KA60	O
CPU	O
modules	O
running	O
at	O
12.5MHz	O
(	O
80	O
ns	O
cycle	O
time	O
)	O
.	O
</s>
<s>
They	O
were	O
based	O
the	O
experimental	O
DEC	B-Device
Firefly	I-Device
multiprocessor	O
workstation	B-Device
,	O
and	O
were	O
positioned	O
as	O
mid-range	O
workstations	B-Device
.	O
</s>
<s>
The	O
first	O
official	O
announcement	O
from	O
Digital	O
regarding	O
these	O
workstations	B-Device
was	O
on	O
10	O
January	O
1989	O
,	O
although	O
it	O
was	O
a	O
"	O
programme	O
announcement	O
"	O
with	O
no	O
dates	O
or	O
prices	O
provided	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
VLC	O
(	O
Very	O
Low	O
Cost	O
)	O
,	O
aka	O
VAXstation	B-Device
4000	O
M30	O
,	O
was	O
an	O
entry-level	O
workstation	B-Device
introduced	O
on	O
30	O
October	O
1991	O
.	O
</s>
<s>
It	O
used	O
the	O
KA48	O
CPU	O
module	O
containing	O
a	O
25MHz	O
(	O
40	O
ns	O
cycle	O
time	O
)	O
SOC	B-Device
microprocessor	B-Architecture
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
60	O
,	O
code	O
named	O
"	O
PMariah	O
"	O
,	O
was	O
announced	O
on	O
30	O
October	O
1991	O
and	O
became	O
available	O
on	O
25	O
November	O
1991	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
VAX	B-Device
system	O
to	O
use	O
the	O
TURBOchannel	B-Device
interconnect	O
.	O
</s>
<s>
The	O
upgrade	O
path	O
was	O
to	O
the	O
VAXstation	B-Device
4000	O
Model	O
96	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
90	O
,	O
code	O
named	O
"	O
Cougar	O
"	O
,	O
was	O
a	O
further	O
development	O
of	O
the	O
VAXstation	B-Device
4000	O
Model	O
60	O
.	O
</s>
<s>
Development	O
of	O
the	O
VAXstation	B-Device
4000	O
Model	O
90	O
began	O
in	O
mid-1991	O
.	O
</s>
<s>
The	O
workstation	B-Device
used	O
the	O
KA49-A	O
CPU	O
module	O
containing	O
a	O
NVAX	B-Device
microprocessor	B-Architecture
operating	O
at	O
74.43MHz	O
(	O
14	O
ns	O
cycle	O
time	O
)	O
with	O
a	O
256KB	O
external	O
secondary	O
cache	O
.	O
</s>
<s>
The	O
NVAX	B-Device
had	O
a	O
64-bit	O
data	O
bus	O
to	O
the	O
NMC	O
(	O
NVAX	B-Device
Memory	O
Controller	O
)	O
two	O
gate	O
array	O
.	O
</s>
<s>
The	O
system	O
module	O
contained	O
eight	O
SIMM	O
slots	O
,	O
and	O
the	O
workstation	B-Device
supported	O
16	O
to	O
128MB	O
of	O
memory	O
with	O
parity	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
90	O
supported	O
3D	O
graphics	O
hardware	O
,	O
the	O
SPXg	O
and	O
SPXgt	O
options	O
.	O
</s>
<s>
One	O
of	O
the	O
buses	O
interfaced	O
to	O
a	O
TURBOchannel	B-Device
slot	O
,	O
the	O
firmware	O
contained	O
within	O
ROMs	O
and	O
the	O
graphics	O
options	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
90	O
could	O
be	O
upgraded	O
to	O
a	O
VAXstation	B-Device
4000	O
Model	O
96	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
90A	O
,	O
code	O
named	O
"	O
Cougar+	O
"	O
,	O
was	O
a	O
faster	O
version	O
of	O
the	O
Model	O
90	O
.	O
</s>
<s>
It	O
used	O
the	O
KA49-A	O
CPU	O
module	O
containing	O
a	O
NVAX	B-Device
microprocessor	B-Architecture
operating	O
at	O
83MHz	O
(	O
12	O
ns	O
cycle	O
time	O
)	O
but	O
was	O
otherwise	O
the	O
same	O
.	O
</s>
<s>
The	O
upgrade	O
path	O
was	O
to	O
the	O
VAXstation	B-Device
4000	O
Model	O
96	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
4000	O
Model	O
96	O
,	O
code	O
named	O
"	O
Cougar++	O
"	O
,	O
was	O
a	O
faster	O
version	O
of	O
the	O
Model	O
90A	O
.	O
</s>
<s>
It	O
used	O
the	O
KA49-C	O
CPU	O
module	O
containing	O
a	O
NVAX	B-Device
microprocessor	B-Architecture
operating	O
at	O
100MHz	O
(	O
10	O
ns	O
cycle	O
time	O
)	O
but	O
was	O
otherwise	O
the	O
same	O
.	O
</s>
<s>
The	O
VAXstation	B-Device
8000	O
,	O
code	O
named	O
"	O
Lynx	O
"	O
,	O
was	O
a	O
high-end	O
workstation	B-Device
introduced	O
on	O
2	O
February	O
1988	O
.	O
</s>
<s>
It	O
was	O
essentially	O
a	O
VAX	B-Device
8250	O
packaged	O
in	O
a	O
deskside	O
enclosure	O
with	O
a	O
3D	O
graphics	O
pipeline	O
developed	O
jointly	O
with	O
Evans	O
&	O
Sutherland	O
.	O
</s>
<s>
It	O
was	O
the	O
only	O
VAXstation	B-Device
to	O
use	O
a	O
Full	O
VAX	B-Device
processor	O
instead	O
of	O
a	O
MicroVAX	B-Device
as	O
its	O
main	O
CPU	O
.	O
</s>
<s>
DTP	O
software	O
for	O
VMS	B-Operating_System
on	O
the	O
VAXstation	B-Device
included	O
Interleaf	O
IWPS/IWPS	O
-Plus	O
,	O
CGS	O
Digi-Design/ORIS	O
,	O
DECwrite	O
and	O
WordPerfect	B-Application
.	O
</s>
<s>
FEM	B-Application
pre	O
-	O
and	O
postprocessing	O
,	O
I-DEAS	B-Algorithm
)	O
,	O
</s>
