Xerox 550 - Main Memory

Memory
Unit
Core
Memory
Modules
(CMM)
Memory
Memory
Unit
Driver
(MD)
P P P P P P
1 2
3 4 5 6
r
- --
--,
I
-
Memory
I
Interface
I
r--
•
I
I
Basic
I
r--
Processor
I
I
en
::l
co
L-
I
a>
....
en
::l
I
u
t---
MIOP
I
I
r
Processor
I
'---
Interface
Core
Memory
Modules
(CMM)
Memory
Memory
Unit
Driver
(MD)
P P P P
P P
1 2
3 4
5 6
Memory Bus 1
1
Memory Bus 2
Processor
Cluster
To Processor Bus(es)
.
(Maximum
of eight)
Core
Core
Memory
Memory
Modules
Modules
(CMM)
(CMM)
Memory
Memory
Memory
Unit
.
Driver
Driver
(MD)
(MD)
P P P P P P
P P
P
P P
1
2
3
4 5 6
1 2
3
4 5
,---i---ll
~ Memory I
..-- Interface
L-
a>
....
en
::l
U
I--
MIOP
Processor
Interface
I
I
I
I
I
I
I
I
I
I
L ______ --.J
P
6
Processor
Cluster
To Processor Bus(es)
Figure
4. Main Memory
Main Memory 15