<s>
The	O
Open	B-Device
Core	I-Device
Protocol	I-Device
(	O
OCP	O
)	O
is	O
a	O
protocol	O
for	O
on-chip	O
subsystem	O
communications	O
.	O
</s>
<s>
Legacy	O
IP	B-Architecture
cores	I-Architecture
can	O
be	O
adapted	O
to	O
OCP	O
,	O
while	O
new	O
implementations	O
may	O
take	O
advantage	O
of	O
advanced	O
features	O
:	O
designers	O
select	O
only	O
those	O
features	O
and	O
signals	O
encompassing	O
a	O
core	O
’s	O
specific	O
data	O
,	O
control	O
and	O
test	O
configuration	O
.	O
</s>
<s>
both	O
soft	B-Device
microprocessor	I-Device
and	O
hard-macro	O
processor	O
.	O
</s>
<s>
Advanced	B-Protocol
eXtensible	I-Protocol
Interface	I-Protocol
(	O
AXI	O
)	O
,	O
</s>
<s>
and	O
the	O
Wishbone	B-Architecture
bus	I-Architecture
.	O
</s>
<s>
FPGA	B-Architecture
vendor	O
Altera	O
joined	O
the	O
Open	B-Device
Core	I-Device
Protocol	I-Device
International	O
Partnership	O
in	O
2010	O
.	O
</s>
<s>
Neither	O
Altera	O
nor	O
Xilinx	O
,	O
the	O
two	O
largest	O
FPGA	B-Architecture
vendors	O
,	O
supports	O
this	O
protocol	O
.	O
</s>
