<s>
The	O
Mega	B-Device
PC	I-Device
is	O
a	O
computer	O
manufactured	O
and	O
released	O
by	O
Amstrad	O
in	O
1993	O
under	O
license	O
from	O
Sega	O
.	O
</s>
<s>
It	O
was	O
similar	O
but	O
unrelated	O
to	O
the	O
Sega	B-Device
TeraDrive	I-Device
.	O
</s>
<s>
It	O
is	O
a	O
standard	O
Amstrad	O
PC	O
with	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
hardware	O
bundled	O
inside	O
;	O
the	O
system	O
was	O
wired	O
to	O
share	O
the	O
dual-sync	O
monitor	O
and	O
speakers	O
with	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
on	O
a	O
separate	O
circuit	O
board	O
.	O
</s>
<s>
Initially	O
released	O
in	O
PAL	O
areas	O
such	O
as	O
Europe	O
and	O
Australia	O
in	O
1993	O
,	O
its	O
success	O
was	O
short-lived	O
due	O
to	O
its	O
high	O
price	O
of	O
£999.99	O
(	O
later	O
reduced	O
to	O
£599	O
)	O
and	O
a	O
CPU	B-Device
that	O
was	O
outdated	O
by	O
the	O
time	O
of	O
its	O
release	O
.	O
</s>
<s>
It	O
was	O
slightly	O
easier	O
to	O
acquire	O
an	O
Amstrad	B-Device
Mega	I-Device
PC	I-Device
than	O
the	O
Sega	B-Device
TeraDrive	I-Device
system	O
due	O
to	O
higher	O
manufacturing	O
volumes	O
.	O
</s>
<s>
The	O
Mega	B-Device
PC	I-Device
was	O
as	O
a	O
more	O
robust	O
unit	O
than	O
Sega	O
's	O
TeraDrive	B-Device
and	O
had	O
more	O
efficient	O
air	O
circulation	O
.	O
</s>
<s>
The	O
Mega	B-Device
PC	I-Device
was	O
IBM-compatible	O
and	O
had	O
a	O
Mega	B-Operating_System
Drive	I-Operating_System
ISA	O
card	O
,	O
a	O
Mega	B-Operating_System
Drive	I-Operating_System
Controller	O
,	O
Keyboard	O
,	O
Mouse	O
,	O
Monitor	O
,	O
Joystick	O
and	O
Internal	O
Speakers	O
.	O
</s>
<s>
The	O
machine	O
shipped	O
with	O
1MB	O
of	O
RAM	B-Architecture
,	O
provided	O
by	O
4×	O
256KB	O
30-pin	O
SIMM	B-General_Concept
sticks	O
.	O
</s>
<s>
Although	O
it	O
boasted	O
a	O
higher	O
specification	O
than	O
the	O
Sega	B-Device
TeraDrive	I-Device
(	O
having	O
more	O
RAM	B-Architecture
and	O
a	O
faster	O
processor	O
)	O
,	O
the	O
specification	O
of	O
the	O
Mega	B-Device
PC	I-Device
's	O
CPU	B-Device
was	O
a	O
generation	O
old	O
.	O
</s>
<s>
The	O
newer	O
Intel	B-General_Concept
80486	I-General_Concept
was	O
on	O
the	O
market	O
and	O
the	O
first	O
Pentium	B-General_Concept
processors	O
were	O
released	O
the	O
same	O
year	O
as	O
the	O
Mega	B-Device
PC	I-Device
.	O
</s>
<s>
The	O
system	O
was	O
unable	O
to	O
act	O
as	O
a	O
Software	B-Application
Development	I-Application
Kit	I-Application
due	O
to	O
its	O
inability	O
to	O
simultaneously	O
use	O
the	O
PC	O
and	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
hardware	O
.	O
</s>
<s>
A	O
cover	O
on	O
the	O
front	O
of	O
the	O
unit	O
prevented	O
the	O
insertion	O
of	O
a	O
Mega	B-Operating_System
Drive	I-Operating_System
game	B-Protocol
cartridge	I-Protocol
while	O
using	O
the	O
PC	O
hardware	O
.	O
</s>
<s>
These	O
include	O
two	O
serial	B-Protocol
ports	I-Protocol
,	O
a	O
25-pin	O
parallel	B-Device
port	I-Device
,	O
a	O
VGA	B-Protocol
port	I-Protocol
with	O
combined	O
signals	O
for	O
a	O
standard	O
VGA	B-Protocol
monitor	I-Protocol
and	O
sound	O
(	O
Amstrad	O
monitor	O
only	O
)	O
,	O
a	O
speaker/headphone	O
jack	O
,	O
and	O
a	O
15	O
pin	O
game	B-Protocol
port	I-Protocol
for	O
a	O
joystick	O
.	O
</s>
<s>
The	O
motherboard	B-Device
includes	O
a	O
16	B-Device
bit	I-Device
ISA	O
slot	O
connected	O
to	O
a	O
riser	O
card	O
,	O
providing	O
a	O
total	O
of	O
two	O
16	B-Device
bit	I-Device
ISA	O
slots	O
.	O
</s>
<s>
One	O
of	O
these	O
slots	O
is	O
populated	O
with	O
an	O
ISA	O
card	O
,	O
which	O
provides	O
connections	O
for	O
sound	O
at	O
the	O
rear	O
of	O
the	O
machine	O
and	O
a	O
connection	O
for	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
cartridge	B-Protocol
at	O
the	O
front	O
.	O
</s>
<s>
The	O
other	O
slot	O
was	O
left	O
free	O
for	O
expansion	O
(	O
such	O
as	O
the	O
addition	O
of	O
a	O
modem	B-Application
or	O
Network	B-Protocol
Interface	I-Protocol
Card	I-Protocol
)	O
.	O
</s>
<s>
The	O
Sega	B-Device
TeraDrive	I-Device
includes	O
stereo	O
RCA	B-Protocol
jacks	I-Protocol
and	O
composite	O
NTSC	O
video	O
output	O
for	O
connection	O
to	O
a	O
TV	O
,	O
whereas	O
the	O
Mega	B-Device
PC	I-Device
lacks	O
this	O
feature	O
,	O
but	O
could	O
be	O
connected	O
to	O
a	O
PAL	O
TV	O
through	O
SCART	O
.	O
</s>
<s>
Outputs	O
from	O
both	O
the	O
PC	O
and	O
Mega	B-Operating_System
Drive	I-Operating_System
units	O
are	O
available	O
from	O
a	O
shared	O
VGA	B-Protocol
connector	I-Protocol
,	O
but	O
since	O
video	O
output	O
from	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
is	O
still	O
15kHz	O
RGB	O
it	O
works	O
fine	O
when	O
connected	O
to	O
a	O
TV	O
using	O
SCART	O
.	O
</s>
<s>
When	O
using	O
the	O
PC	O
hardware	O
,	O
only	O
a	O
Multisync	O
or	O
VGA	B-Protocol
monitor	I-Protocol
can	O
be	O
used	O
,	O
as	O
the	O
unit	O
outputs	O
video	O
at	O
31kHz	O
.	O
</s>
<s>
Amstrad	O
bundled	O
several	O
peripherals	O
with	O
its	O
Mega	B-Device
PC	I-Device
,	O
including	O
:	O
</s>
<s>
Amstrad	O
advertised	O
,	O
but	O
never	O
released	O
,	O
a	O
successor	O
to	O
the	O
Mega	B-Device
PC	I-Device
named	O
the	O
Amstrad	O
Mega	O
Plus	O
.	O
</s>
<s>
It	O
boasted	O
slightly	O
higher	O
specifications	O
,	O
with	O
the	O
processor	O
upgraded	O
to	O
a	O
Cyrix	B-Device
Cx486SLC	I-Device
running	O
at	O
33MHz	O
and	O
a	O
RAM	B-Architecture
upgrade	O
of	O
4×	O
1MB	O
SIMM	B-General_Concept
modules	O
(	O
4MB	O
)	O
.	O
</s>
