<s>
A	O
silicon	B-General_Concept
compiler	I-General_Concept
is	O
a	O
software	O
system	O
that	O
takes	O
a	O
user	O
's	O
specifications	O
and	O
automatically	O
generates	O
an	O
integrated	O
circuit	O
(	O
IC	O
)	O
.	O
</s>
<s>
Convert	O
a	O
hardware-description	O
language	O
such	O
as	O
Verilog	B-Language
or	O
VHDL	B-Language
into	O
logic	O
(	O
typically	O
in	O
the	O
form	O
of	O
a	O
"	O
netlist	O
"	O
)	O
.	O
</s>
<s>
Silicon	B-General_Concept
compilers	I-General_Concept
typically	O
use	O
standard-cell	O
libraries	O
so	O
that	O
they	O
do	O
not	O
have	O
to	O
worry	O
about	O
the	O
actual	O
integrated-circuit	O
layout	O
and	O
can	O
focus	O
on	O
the	O
placement	O
.	O
</s>
<s>
Johannsen	O
,	O
Mead	O
,	O
and	O
Edmund	O
K	O
.	O
Cheng	O
subsequently	O
founded	O
Silicon	B-General_Concept
Compilers	I-General_Concept
Inc	O
.	O
(	O
SCI	O
)	O
in	O
1981	O
.	O
</s>
<s>
John	O
Wawrzynek	O
at	O
Caltech	O
used	O
some	O
of	O
the	O
earliest	O
silicon	B-General_Concept
compilers	I-General_Concept
in	O
1982	O
as	O
part	O
of	O
the	O
"	O
Yet	O
Another	O
Processor	O
Project	O
"	O
(	O
YAPP	O
)	O
.	O
</s>
<s>
In	O
1983	O
–	O
84	O
,	O
the	O
SCI	O
team	O
designed	O
and	O
implemented	O
the	O
data-path	O
chip	O
used	O
in	O
the	O
MicroVAX	B-Device
in	O
seven	O
months	O
.	O
</s>
<s>
MicroVAX	B-Device
's	O
data-path	O
chip	O
contains	O
the	O
entire	O
32-bit	O
processor	O
,	O
except	O
its	O
microcode	O
store	O
and	O
control-store	O
sequencer	O
,	O
and	O
contains	O
37,000	O
transistors	O
.	O
</s>
<s>
Including	O
those	O
seven	O
months	O
,	O
Digital	O
Equipment	O
Corporation	O
completed	O
the	O
design	O
and	O
implementation	O
of	O
the	O
MicroVAX	B-Device
within	O
one	O
year	O
.	O
</s>
