<s>
The	O
Cray	B-Device
APP	I-Device
(	O
Attached	O
Parallel	B-Operating_System
Processor	I-Operating_System
)	O
was	O
a	O
parallel	B-Operating_System
computer	I-Operating_System
sold	O
by	O
Cray	O
Research	O
from	O
1992	O
onwards	O
.	O
</s>
<s>
It	O
was	O
based	O
on	O
the	O
Intel	B-General_Concept
i860	I-General_Concept
microprocessor	B-Architecture
and	O
could	O
be	O
configured	O
with	O
up	O
to	O
84	O
processors	O
.	O
</s>
<s>
The	O
APP	O
was	O
marketed	O
as	O
a	O
"	O
matrix	O
co-processor	O
"	O
system	O
and	O
required	O
a	O
SPARC-based	O
host	O
system	O
to	O
operate	O
,	O
such	O
as	O
the	O
Cray	B-Device
S-MP	I-Device
.	O
</s>
<s>
Connection	O
to	O
the	O
host	O
system	O
was	O
via	O
VMEbus	B-Architecture
or	O
HiPPI	B-Architecture
.	O
</s>
