<s>
blueMSX	B-Application
is	O
a	O
portable	O
open-source	B-Application
MSX	B-Operating_System
emulator	B-Application
that	O
uses	O
an	O
emulation	B-Application
model	O
to	O
achieve	O
the	O
highest	O
level	O
of	O
accuracy	O
possible	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
the	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
system	I-Application
and	O
is	O
ported	O
to	O
multiple	O
other	O
systems	O
.	O
</s>
<s>
blueMSX	B-Application
includes	O
a	O
powerful	O
debugger	O
with	O
support	O
for	O
several	O
assembly	O
formats	O
and	O
a	O
machine	O
configuration	O
editor	O
that	O
allows	O
advanced	O
users	O
to	O
set	O
up	O
practically	O
any	O
MSX	B-Operating_System
computer	O
system	O
ever	O
made	O
.	O
</s>
<s>
blueMSX	B-Application
was	O
initially	O
released	O
in	O
2003	O
and	O
soon	O
became	O
one	O
of	O
the	O
most	O
accurate	O
and	O
user	O
friendly	O
emulators	B-Application
.	O
</s>
<s>
Like	O
many	O
other	O
MSX	B-Operating_System
emulators	B-Application
,	O
blueMSX	B-Application
started	O
as	O
a	O
clone	O
of	O
fMSX	B-Device
.	O
</s>
<s>
The	O
feature	O
that	O
made	O
the	O
first	O
release	O
,	O
in	O
November	O
2003	O
,	O
unique	O
to	O
the	O
MSX	B-Operating_System
emulator	B-Application
scene	O
at	O
the	O
time	O
,	O
was	O
the	O
addition	O
of	O
monitor	O
simulation	O
.	O
</s>
<s>
Initially	O
,	O
blueMSX	B-Application
's	O
emulation	B-Application
was	O
quite	O
poor	O
and	O
suffered	O
from	O
the	O
same	O
limitations	O
and	O
flaws	O
as	O
its	O
mother	O
fMSX	B-Device
.	O
</s>
<s>
However	O
,	O
during	O
the	O
first	O
year	O
the	O
development	O
focused	O
on	O
improving	O
and	O
replacing	O
the	O
misbehaving	O
emulation	B-Application
code	O
,	O
as	O
well	O
as	O
redesigning	O
the	O
software	O
architecture	O
.	O
</s>
<s>
With	O
better	O
architecture	O
,	O
emulation	B-Application
of	O
new	O
devices	O
became	O
easier	O
,	O
and	O
was	O
n't	O
very	O
long	O
before	O
most	O
audio	O
devices	O
and	O
ROM	O
types	O
were	O
supported	O
.	O
</s>
<s>
In	O
August	O
2004	O
blueMSX	B-Application
became	O
the	O
first	O
MSX	B-Operating_System
emulator	B-Application
to	O
support	O
skins	O
.	O
</s>
<s>
In	O
November	O
2004	O
,	O
blueMSX	B-Application
was	O
finally	O
100%	O
free	O
of	O
fMSX	B-Device
code	O
.	O
</s>
<s>
The	O
November	O
release	O
was	O
also	O
a	O
big	O
milestone	O
since	O
it	O
brought	O
support	O
for	O
the	O
Turbo-R	O
,	O
the	O
last	O
MSX	B-Operating_System
produced	O
.	O
</s>
<s>
On	O
top	O
of	O
that	O
,	O
it	O
was	O
the	O
first	O
release	O
that	O
included	O
emulation	B-Application
for	O
the	O
ColecoVision	B-Device
and	O
the	O
Spectravideo	O
SV-328	B-Device
.	O
</s>
<s>
Since	O
the	O
November	O
2004	O
milestone	O
,	O
developer	O
focus	O
has	O
been	O
on	O
improving	O
the	O
user	O
interface	O
and	O
emulation	B-Application
accuracy	O
,	O
as	O
well	O
as	O
extending	O
the	O
emulation	B-Application
to	O
include	O
more	O
exotic	O
devices	O
such	O
as	O
the	O
Konami	O
Keyboard	O
Master	O
,	O
an	O
unreleased	O
speech	O
synthesis	O
ROM	O
.	O
</s>
<s>
The	O
emulation	B-Application
core	O
was	O
extended	O
to	O
support	O
any	O
Z80	O
based	O
computer	O
systems	O
and	O
is	O
now	O
supporting	O
multiple	O
systems	O
,	O
such	O
as	O
SG-1000	B-Operating_System
,	O
Spectravideo	O
,	O
and	O
ColecoVision	B-Device
.	O
</s>
<s>
Later	O
additions	O
to	O
the	O
emulation	B-Application
include	O
support	O
for	O
digitizers	O
,	O
IDE	O
and	O
SCSI	O
hard	O
drives	O
,	O
and	O
emulation	B-Application
of	O
the	O
extensions	O
in	O
the	O
Yamaha	O
CX5-M	O
music	O
computer	O
.	O
</s>
<s>
A	O
big	O
effort	O
to	O
make	O
the	O
emulator	B-Application
portable	O
to	O
other	O
platforms	O
started	O
in	O
2007	O
and	O
since	O
then	O
the	O
emulator	B-Application
has	O
been	O
ported	O
to	O
multiple	O
other	O
systems	O
.	O
</s>
<s>
The	O
current	O
architecture	O
of	O
the	O
emulator	B-Application
makes	O
it	O
easy	O
to	O
compile	O
to	O
any	O
system	O
with	O
a	O
c	O
compiler	O
and	O
does	O
not	O
depend	O
on	O
any	O
graphics	O
,	O
audio	O
,	O
or	O
user	O
input	O
libraries	O
.	O
</s>
<s>
The	O
emulation	B-Application
engine	O
in	O
blueMSX	B-Application
is	O
cycle	O
accurate	O
,	O
which	O
means	O
that	O
the	O
timing	O
and	O
synchronization	O
between	O
emulated	B-Application
hardware	O
components	O
appear	O
the	O
same	O
as	O
on	O
a	O
real	O
MSX	B-Operating_System
.	O
</s>
<s>
The	O
goal	O
is	O
to	O
replicate	O
each	O
individual	O
component	O
as	O
accurately	O
as	O
possible	O
,	O
which	O
means	O
that	O
the	O
emulator	B-Application
requires	O
a	O
more	O
high	O
end	O
PC	O
than	O
emulators	B-Application
optimized	O
for	O
speed	O
.	O
</s>
<s>
Most	O
hardware	O
released	O
for	O
the	O
MSX	B-Operating_System
system	O
is	O
emulated	B-Application
and	O
the	O
emulator	B-Application
includes	O
a	O
configuration	O
editor	O
to	O
mimic	O
real	O
MSX	B-Operating_System
systems	O
by	O
choosing	O
components	O
such	O
as	O
floppy	O
drives	O
,	O
memory	O
,	O
sound	O
chips	O
and	O
video	O
chips	O
.	O
</s>
<s>
Common	O
emulator	B-Application
features	O
are	O
supported	O
,	O
like	O
screen	O
shots	O
,	O
AVI	O
rendering	O
,	O
and	O
a	O
cheat	O
system	O
.	O
</s>
<s>
The	O
emulator	B-Application
has	O
a	O
theme-based	O
GUI	O
with	O
buttons	O
to	O
control	O
the	O
emulation	B-Application
,	O
a	O
virtual	B-Device
keyboard	I-Device
,	O
and	O
controls	O
to	O
change	O
sound	O
and	O
video	O
settings	O
at	O
runtime	O
.	O
</s>
<s>
blueMSX	B-Application
is	O
capable	O
of	O
emulating	B-Application
major	O
sound	O
chips	O
including	O
programmable	O
sound	O
generator	O
sound	O
chips	O
(	O
AY-3-8910	B-Device
,	O
SN76489	B-Device
)	O
,	O
Konami	O
SCC	O
,	O
Moonsound	O
(	O
OPL4	O
)	O
,	O
FM-PAC	O
(	O
YM2413	O
)	O
,	O
MSX-AUDIO	O
(	O
Y8950	O
sound	O
chip	O
)	O
and	O
a	O
couple	O
of	O
different	O
PCM	O
devices	O
.	O
</s>
<s>
blueMSX	B-Application
simulates	O
six	O
different	O
monitor	O
types	O
,	O
from	O
sharp	O
modern	O
monitors	O
to	O
old	O
TV	O
sets	O
.	O
</s>
<s>
The	O
emulator	B-Application
has	O
controls	O
for	O
real	O
time	O
modification	O
of	O
gamma	O
,	O
brightness	O
,	O
contrast	O
,	O
saturation	O
and	O
color	O
shifting	O
,	O
and	O
it	O
supports	O
horizontal	O
and	O
vertical	O
stretch	O
,	O
as	O
well	O
as	O
a	O
slider	O
for	O
adaptable	O
scanlines	O
on	O
all	O
monitor	O
modes	O
to	O
make	O
the	O
ratio	O
of	O
the	O
video	O
output	O
match	O
a	O
real	O
system	O
.	O
</s>
<s>
blueMSX	B-Application
includes	O
a	O
graphical	O
debugger	O
with	O
register	O
windows	O
,	O
memory	O
windows	O
,	O
call	O
stack	O
windows	O
,	O
breakpoints	O
,	O
trace	O
and	O
other	O
features	O
.	O
</s>
<s>
This	O
makes	O
blueMSX	B-Application
a	O
good	O
development	O
platform	O
for	O
the	O
supported	O
systems	O
.	O
</s>
