<s>
A64	B-Device
is	O
a	O
Commodore	O
64	O
emulator	B-Application
for	O
the	O
Amiga	B-Device
.	O
</s>
<s>
It	O
was	O
developed	O
and	O
published	O
by	O
QuesTronix	O
and	O
distributed	O
as	O
shareware	B-License
.	O
</s>
<s>
The	O
registered	O
version	O
removes	O
the	O
time	O
limit	O
and	O
comes	O
with	O
a	O
hardware	O
adapter	O
to	O
connect	O
a	O
Commodore	B-Device
1541	I-Device
disk	O
drive	O
to	O
the	O
Amiga	B-Device
's	O
parallel	B-Device
port	I-Device
.	O
</s>
<s>
A64	B-Device
has	O
some	O
extras	O
that	O
a	O
real	O
Commodore	O
64	O
is	O
inherently	O
unable	O
to	O
provide	O
.	O
</s>
<s>
The	O
most	O
useful	O
of	O
these	O
is	O
an	O
integrated	O
MOS	B-General_Concept
6510	I-General_Concept
machine	B-Language
language	I-Language
monitor	O
,	O
which	O
can	O
be	O
invoked	O
at	O
any	O
time	O
during	O
the	O
emulation	B-Application
.	O
</s>
<s>
While	O
in	O
the	O
monitor	O
,	O
the	O
emulated	B-Application
Commodore	O
64	O
is	O
frozen	O
in	O
place	O
,	O
giving	O
the	O
user	O
full	O
reign	O
over	O
its	O
internal	O
memory	O
and	O
registers	O
.	O
</s>
<s>
The	O
emulator	B-Application
also	O
allows	O
machine	B-Language
language	I-Language
program	O
input	O
through	O
6510	B-General_Concept
mnemonic	O
codes	O
,	O
rather	O
than	O
raw	O
numeric	O
values	O
.	O
</s>
<s>
Another	O
extra	O
feature	O
is	O
that	O
the	O
16-colour	O
palette	O
of	O
the	O
Commodore	O
64	O
is	O
fully	O
customisable	O
from	O
the	O
Amiga	B-Device
's	O
palette	O
of	O
4096	O
hues	O
.	O
</s>
<s>
A64	B-Device
supports	O
Commodore	O
64	O
disk	O
drives	O
as	O
the	O
devices	O
8	O
through	O
11	O
,	O
just	O
like	O
a	O
real	O
Commodore	O
64	O
.	O
</s>
<s>
These	O
drives	O
can	O
be	O
either	O
simulated	O
,	O
mapped	O
onto	O
directories	O
on	O
the	O
Amiga	B-Device
's	O
filesystem	B-Application
,	O
or	O
real	O
1541	O
compatible	O
drives	O
accessed	O
through	O
the	O
hardware	O
adapter	O
.	O
</s>
<s>
A64	B-Device
does	O
not	O
support	O
the	O
Commodore	B-Device
Datasette	I-Device
.	O
</s>
