<s>
LISA	B-Language
(	O
Language	O
for	O
Instruction	B-General_Concept
Set	I-General_Concept
Architectures	I-General_Concept
)	O
is	O
a	O
language	O
to	O
describe	O
the	O
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
of	O
a	O
processor	B-Architecture
.	O
</s>
<s>
LISA	B-Language
captures	O
the	O
information	O
required	O
to	O
generate	O
software	B-Application
tools	I-Application
(	O
compiler	B-Language
,	O
assembler	B-Language
,	O
instruction	B-Application
set	I-Application
simulator	I-Application
,	O
...	O
)	O
and	O
implementation	O
hardware	O
(	O
in	O
VHDL	B-Language
or	O
Verilog	B-Language
)	O
of	O
a	O
given	O
processor	B-Architecture
.	O
</s>
<s>
LISA	B-Language
has	O
been	O
used	O
to	O
re-implement	O
the	O
hardware	O
of	O
existing	O
processor	B-Architecture
cores	O
,	O
keeping	O
the	O
binary	B-General_Concept
compatibility	I-General_Concept
with	O
the	O
legacy	O
version	O
,	O
as	O
all	O
software	B-Application
tools	I-Application
did	O
already	O
exist	O
and	O
legacy	O
compiled	B-Language
software	I-Language
images	O
could	O
be	O
executed	O
on	O
the	O
newly	O
created	O
hardware	O
.	O
</s>
<s>
Another	O
application	O
has	O
been	O
to	O
generate	O
the	O
ISS	O
(	O
instruction	B-Application
set	I-Application
simulator	I-Application
)	O
for	O
RISC	O
processors	O
such	O
the	O
ARM	B-Architecture
architecture	I-Architecture
ISSes	O
.	O
</s>
<s>
LISA	B-Language
 '	O
is	O
not	O
focused	O
on	O
the	O
modeling	O
of	O
other	O
on-chip	O
components	O
around	O
the	O
processor	B-Architecture
core	O
itself	O
,	O
such	O
as	O
peripherals	O
,	O
hardware	O
accelerators	O
,	O
buses	O
and	O
memories	O
;	O
Other	O
languages	O
such	O
as	O
SystemC	B-Language
can	O
be	O
used	O
for	O
these	O
.	O
</s>
<s>
LISA	B-Language
was	O
initially	O
developed	O
at	O
Institute	O
for	O
Integrated	O
Signal	O
Processing	O
Systems	O
(	O
ISS	O
)	O
Aachen	O
,	O
belonging	O
to	O
RWTH	O
Aachen	O
University	O
,	O
in	O
Germany	O
.	O
</s>
<s>
The	O
current	O
official	O
version	O
from	O
RWTH	O
Aachen	O
is	O
LISA	B-Language
2.0	O
.	O
</s>
<s>
The	O
language	O
is	O
still	O
in	O
evolution	O
to	O
cover	O
research	O
on	O
processors	O
,	O
including	O
Reconfigurable	B-Architecture
computing	I-Architecture
(	O
in	O
LISA	B-Language
3.0	O
)	O
,	O
multi-core	B-Architecture
,	O
parallel	B-Operating_System
programming	I-Operating_System
.	O
</s>
<s>
One	O
noticeable	O
branch	O
called	O
LISA+	O
has	O
been	O
created	O
for	O
handling	O
the	O
modeling	O
of	O
peripherals	O
such	O
as	O
interrupt	O
controllers	O
,	O
timers	O
,	O
etc	O
.	O
</s>
