<s>
The	O
Torch	B-Device
Triple	I-Device
X	I-Device
(	O
or	O
XXX	O
)	O
was	O
a	O
UNIX	B-Device
workstation	I-Device
computer	O
produced	O
by	O
the	O
British	O
company	O
Torch	O
Computers	O
,	O
and	O
launched	O
in	O
1985	O
.	O
</s>
<s>
It	O
was	O
based	O
on	O
the	O
Motorola	B-Device
68010	I-Device
microprocessor	B-Architecture
and	O
ran	O
a	O
version	O
of	O
UNIX	B-Operating_System
System	I-Operating_System
V	I-Operating_System
.	O
</s>
<s>
The	O
Triple	O
X	O
was	O
based	O
on	O
an	O
8	O
MHz	O
68010	B-Device
CPU	B-General_Concept
,	O
with	O
a	O
Hitachi	O
6303	O
"	O
service	O
processor	O
"	O
.	O
</s>
<s>
The	O
CPU	B-General_Concept
was	O
accompanied	O
by	O
a	O
68451	B-Device
memory	B-General_Concept
management	I-General_Concept
unit	I-General_Concept
and	O
a	O
68450	O
DMA	B-General_Concept
controller	I-General_Concept
.	O
</s>
<s>
Both	O
VMEbus	B-Architecture
and	O
a	O
BBC	O
Micro-compatible	O
"	O
1MHz	O
bus	O
"	O
expansion	O
buses	O
were	O
provided	O
,	O
as	O
was	O
a	O
SCSI	B-Architecture
host	O
adapter	O
,	O
and	O
an	O
optional	O
Ethernet	O
interface	O
.	O
</s>
<s>
Both	O
RS-423	O
and	O
X.25-compatible	O
synchronous	O
serial	O
ports	O
were	O
provided	O
.	O
</s>
<s>
This	O
latter	O
feature	O
made	O
the	O
Triple	O
X	O
attractive	O
to	O
the	O
UK	O
academic	O
community	O
,	O
where	O
X.25	B-Protocol
networks	O
were	O
prevalent	O
at	O
the	O
time	O
.	O
</s>
<s>
Standard	O
RAM	O
capacity	O
was	O
1	O
MB	O
,	O
expandable	O
to	O
7	O
MB	O
via	O
VME	B-Architecture
cards	I-Architecture
.	O
</s>
<s>
A	O
720	O
kB	O
,	O
5.25	O
in	O
floppy	B-Device
disk	I-Device
drive	I-Device
and	O
ST-506-compatible	O
20	O
MB	O
hard	B-Device
disk	I-Device
were	O
fitted	O
as	O
standard	O
,	O
interfaced	O
to	O
the	O
SCSI	B-Architecture
bus	O
via	O
an	O
OMTI	O
adapter	O
.	O
</s>
<s>
When	O
switching	O
off	O
,	O
this	O
commanded	O
the	O
operating	B-General_Concept
system	I-General_Concept
to	O
shut	O
down	O
gracefully	O
before	O
powering	O
down	O
.	O
</s>
<s>
The	O
native	O
operating	B-General_Concept
system	I-General_Concept
was	O
Uniplus+	B-Operating_System
UNIX	B-Operating_System
System	I-Operating_System
V	I-Operating_System
Release	O
2	O
.	O
</s>
<s>
A	O
graphical	B-Application
user	I-Application
interface	I-Application
called	O
OpenTop	O
was	O
also	O
included	O
as	O
standard	O
.	O
</s>
<s>
The	O
Quad	O
X	O
was	O
an	O
enhanced	O
version	O
of	O
the	O
Triple	O
X	O
,	O
with	O
a	O
68020	B-Device
processor	O
and	O
three	O
VME	O
expansion	O
slots	O
.	O
</s>
