<s>
It	O
was	O
based	O
on	O
the	O
Jazz	B-Device
architecture	O
developed	O
by	O
Microsoft	O
and	O
supported	O
the	O
MIPS	O
Technologies	O
R4000	B-General_Concept
or	O
R4400	B-General_Concept
microprocessors	O
.	O
</s>
<s>
The	O
chipset	O
was	O
designed	O
for	O
computers	O
that	O
run	O
Windows	B-Device
NT	I-Device
,	O
and	O
therefore	O
used	O
ARC	B-Device
firmware	B-Application
to	O
boot	O
Windows	B-Device
NT	I-Device
.	O
</s>
<s>
The	O
chipset	O
consisted	O
of	O
six	O
chips	O
:	O
a	O
CPU	O
and	O
secondary	O
cache	O
controller	O
,	O
a	O
buffer	O
,	O
a	O
I/O	O
cache	O
and	O
bus	O
controller	O
,	O
a	O
memory	B-General_Concept
controller	I-General_Concept
,	O
and	O
two	O
data	O
buffers	O
.	O
</s>
<s>
PICA	O
was	O
used	O
by	O
Acer	O
in	O
its	O
Formula	O
4000	O
personal	O
workstation	O
,	O
which	O
NEC	O
sold	O
under	O
the	O
OEM	O
name	O
RISCstation	B-Device
Image	I-Device
.	O
</s>
