<s>
Bochs	B-Language
(	O
pronounced	O
"	O
box	O
"	O
)	O
is	O
a	O
portable	O
IA-32	B-Device
and	O
x86-64	B-Device
IBM	O
PC	O
compatible	O
emulator	B-Application
and	O
debugger	B-Application
mostly	O
written	O
in	O
C++	B-Language
and	O
distributed	O
as	O
free	B-Application
software	I-Application
under	O
the	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
.	O
</s>
<s>
It	O
supports	O
emulation	B-Application
of	O
the	O
processor(s )	O
(	O
including	O
protected	B-Application
mode	I-Application
)	O
,	O
memory	O
,	O
disks	O
,	O
display	O
,	O
Ethernet	O
,	O
BIOS	B-Operating_System
and	O
common	O
hardware	O
peripherals	O
of	O
PCs	O
.	O
</s>
<s>
Many	O
guest	O
operating	B-General_Concept
systems	I-General_Concept
can	O
be	O
run	O
using	O
the	O
emulator	B-Application
including	O
DOS	B-Device
,	O
several	O
versions	O
of	O
Microsoft	B-Application
Windows	I-Application
,	O
BSDs	B-Operating_System
,	O
Linux	B-Application
,	O
Xenix	B-Application
and	O
Rhapsody	B-Operating_System
(	O
precursor	O
of	O
Mac	B-Application
OS	I-Application
X	O
)	O
.	O
</s>
<s>
Bochs	B-Language
runs	O
on	O
many	O
host	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
Android	B-Application
,	O
Linux	B-Application
,	O
macOS	B-Application
,	O
PlayStation	B-Device
2	I-Device
,	O
Windows	B-Application
,	O
and	O
Windows	B-Operating_System
Mobile	I-Operating_System
.	O
</s>
<s>
Bochs	B-Language
is	O
mostly	O
used	O
for	O
operating	B-General_Concept
system	I-General_Concept
development	O
(	O
when	O
an	O
emulated	B-Application
operating	B-General_Concept
system	I-General_Concept
crashes	I-General_Concept
,	O
it	O
does	O
not	O
crash	B-General_Concept
the	O
host	O
operating	B-General_Concept
system	I-General_Concept
,	O
so	O
the	O
emulated	B-Application
OS	O
can	O
be	O
debugged	O
)	O
and	O
to	O
run	O
other	O
guest	O
operating	B-General_Concept
systems	I-General_Concept
inside	O
already	O
running	O
host	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Bochs	B-Language
started	O
as	O
a	O
program	O
with	O
a	O
commercial	O
license	O
,	O
at	O
the	O
price	O
of	O
US$25	O
,	O
for	O
use	O
as-is	O
.	O
</s>
<s>
That	O
changed	O
on	O
22	O
March	O
2000	O
,	O
when	O
Mandrakesoft	O
(	O
later	O
Mandriva	O
)	O
bought	O
Bochs	B-Language
from	O
lead	O
developer	O
Kevin	O
Lawton	O
and	O
released	O
it	O
for	O
Linux	B-Application
under	O
the	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
.	O
</s>
<s>
Bochs	B-Language
emulates	B-Application
the	O
hardware	O
needed	O
by	O
PC	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
hard	O
drives	O
,	O
CD	O
drives	O
,	O
and	O
floppy	O
drives	O
.	O
</s>
<s>
It	O
does	O
n't	O
utilize	O
any	O
host	O
CPU	O
virtualization	B-General_Concept
features	O
,	O
therefore	O
is	O
slower	O
than	O
most	O
virtualization	B-General_Concept
(	O
as	O
opposed	O
to	O
emulation	B-Application
)	O
software	O
.	O
</s>
<s>
Bochs	B-Language
also	O
has	O
extensive	O
debugging	O
features	O
.	O
</s>
<s>
BFE	O
,	O
described	O
as	O
a	O
"	O
Graphical	O
Debugger	B-Application
Interface	O
for	O
the	O
Bochs	B-Language
PC	B-Application
Emulator	I-Application
"	O
,	O
is	O
a	O
graphical	O
interface	O
for	O
the	O
debugger	B-Application
within	O
the	O
Bochs	B-Language
PC	B-Application
emulator	I-Application
that	O
makes	O
it	O
possible	O
to	O
debug	O
software	O
step-by-step	O
at	O
the	O
instruction	O
and	O
register	O
level	O
,	O
much	O
like	O
Borland	O
's	O
Turbo	B-Application
Debugger	I-Application
.	O
</s>
<s>
Class	O
Device	O
Video	B-Device
card	I-Device
Cirrus	O
Logic	O
CL-GD5430	O
ISA	B-Architecture
Cirrus	O
Logic	O
CL-GD5446	O
PCI	B-Protocol
3dfx	O
Interactive	O
Voodoo	O
Banshee	O
/	O
Voodoo3	O
Sound	B-Device
card	I-Device
Sound	B-Device
Blaster	I-Device
16	I-Device
(	O
ISA	B-Architecture
,	O
no	O
Plug	B-Device
&	I-Device
Play	I-Device
)	O
,	O
ES1370	O
(	O
PCI	B-Protocol
)	O
,	O
Basic	O
Sound	O
Device	O
NE2000	O
(	O
ISA/PCI	O
)	O
Ethernet	O
or	O
Intel(R )	O
82540EM	O
Gigabit	O
Ethernet	B-Protocol
adapter	I-Protocol
(	O
PCI	B-Protocol
)	O
Chipset	B-Device
Intel	O
430FX	O
PCI	B-Protocol
,	O
Intel	B-Device
440FX	I-Device
PCI	B-Protocol
and	O
Intel	B-Device
440BX	I-Device
AGP	O
northbridge	O
.	O
</s>
<s>
For	O
PCI	B-Protocol
cards	I-Protocol
there	O
are	O
5	O
PCI	B-Protocol
slots	I-Protocol
.	O
</s>
<s>
USB	B-Protocol
Root	O
hub	O
and	O
the	O
devices	O
mouse	O
(	O
optional	O
)	O
,	O
tablet	O
,	O
keypad	O
(	O
default	O
)	O
,	O
disk	O
.	O
</s>
<s>
SMP	B-Operating_System
Can	O
simulate	O
up	O
to	O
8	O
CPUs	O
.	O
</s>
<s>
Enhanced	O
BIOS	B-Operating_System
or	O
SeaBIOS	B-Language
ElTorito	B-Device
,	O
EDD	O
,	O
APM	B-Device
,	O
PCIBIOS	B-Operating_System
,	O
PCI	B-Protocol
interrupt	O
routing	O
table	O
,	O
PnP	B-Device
,	O
ACPI	B-Device
,	O
SMM	B-Architecture
,	O
MPS	B-Device
and	O
VBE	B-Device
.	O
</s>
