<s>
The	O
Acorn	B-Device
Online	I-Device
Media	I-Device
Set	I-Device
Top	I-Device
Box	I-Device
was	O
produced	O
by	O
the	O
Online	O
Media	O
division	O
of	O
Acorn	O
Computers	O
Ltd	O
for	O
the	O
Cambridge	O
Cable	O
and	O
Online	O
Media	O
Video	B-Application
on	I-Application
Demand	I-Application
trial	O
and	O
launched	O
early	O
1996	O
.	O
</s>
<s>
The	O
STB1	O
was	O
a	O
customised	O
Risc	B-Device
PC	I-Device
based	O
system	O
,	O
with	O
a	O
Wild	O
Vision	O
Movie	O
Magic	O
expansion	O
card	O
in	O
a	O
podule	O
slot	O
,	O
and	O
a	O
network	O
card	O
based	O
on	O
Asynchronous	O
Transfer	O
Mode	O
.	O
</s>
<s>
The	O
STB20	O
was	O
a	O
new	O
PCB	O
based	O
around	O
the	O
ARM7500	O
System	B-Architecture
On	I-Architecture
Chip	I-Architecture
.	O
</s>
<s>
Operating	O
system	O
:	O
RISC	B-Operating_System
OS	I-Operating_System
3.61	O
,	O
a	O
version	O
specific	O
for	O
this	O
STB	O
,	O
held	O
in	O
4	O
MiB	O
ROM	O
.	O
</s>
