<s>
The	O
Freedom	B-Application
U540	I-Application
is	O
a	O
microprocessor	O
using	O
the	O
RISC-V	B-Device
open	O
architecture	O
by	O
fabless	O
semiconductor	O
company	O
SiFive	O
that	O
is	O
used	O
to	O
power	O
the	O
HiFive	B-Device
Unleashed	I-Device
computer	O
.	O
</s>
<s>
The	O
U540	O
is	O
one	O
of	O
the	O
first	O
commercially	O
available	O
microprocessors	O
to	O
use	O
the	O
RISC-V	B-Device
architecture	I-Device
,	O
which	O
is	O
in	O
contrast	O
to	O
the	O
majority	O
of	O
the	O
market	O
,	O
which	O
uses	O
mostly	O
proprietary	O
x86	B-Operating_System
and	O
ARM	B-Architecture
microarchitectures	O
.	O
</s>
<s>
The	O
U540	O
has	O
a	O
partial	O
compatibility	O
with	O
coreboot	B-Device
.	O
</s>
