<s>
PreonVM	B-Language
is	O
an	O
implementation	O
of	O
the	O
Java	B-Language
virtual	I-Language
machine	I-Language
developed	O
by	O
Virtenio	O
.	O
</s>
<s>
The	O
PreonVM	B-Language
was	O
initially	O
developed	O
to	O
run	O
on	O
the	O
Atmel	B-Architecture
AVR	I-Architecture
ATmega256	O
,	O
but	O
has	O
been	O
ported	O
to	O
ARM	O
Cortex-M3	O
systems	O
.	O
</s>
<s>
Therefore	O
the	O
VM	O
can	B-Protocol
run	O
on	O
a	O
microcontroller	O
with	O
8	O
kB	O
RAM	O
and	O
256	O
kB	O
ROM	O
at	O
a	O
minimum	O
.	O
</s>
<s>
The	O
PreonVM	B-Language
requires	O
no	O
additional	O
operating	O
system	O
and	O
runs	O
directly	O
on	O
the	O
microcontroller	O
.	O
</s>
<s>
The	O
ClassLinker	O
builds	O
a	O
.vmm	O
file	O
which	O
combines	O
all	O
application	O
class	O
files	O
in	O
a	O
special	O
format	O
which	O
can	B-Protocol
be	O
read	O
and	O
executed	O
by	O
the	O
PreonVM	B-Language
on	O
the	O
microcontroller	O
.	O
</s>
<s>
The	O
VM	O
supports	O
all	O
Java	B-Language
data	O
types	O
incl	O
.	O
</s>
<s>
long	O
and	O
double	O
,	O
threads	O
,	O
synchronization	O
,	O
Garbage	O
collection	O
with	O
memory	O
defragmentation	O
,	O
exceptions	O
,	O
system	O
properties	O
and	O
IRQ/event	O
system	O
.	O
</s>
<s>
The	O
PreonVM	B-Language
comes	O
with	O
a	O
library	O
of	O
driver	O
classes	O
for	O
IO	O
like	O
I2C	O
,	O
SPI	B-Architecture
,	O
USART	O
,	O
CAN	B-Protocol
,	O
PWM	B-Algorithm
,	O
IRQ	B-General_Concept
,	O
RTC	O
,	O
GPIO	B-Architecture
,	O
ADC	O
,	O
DAC	O
and	O
with	O
drivers	O
for	O
some	O
sensors	O
and	O
IC	O
's	O
.	O
</s>
