System Block Diagram - DEC 4000 AXP Service Manual

Figure 6–1 System Block Diagram
Serial Control Bus
Serial Control Bus
TM Data
d i i g t a l
T al k
SD RD CD T R SI
SCHOLAR
Plus
Indicates Optional
Power Subsystem
Front Power
End System DC5 DC3
Unit Contr
CPU 0
Operator
Control
Panel
Ethernet Port 0
Ethernet Port 1
Asynchronous Serial Line
Tes t Off
Loop On
(with modem control)
Asynchronous Serial Line
(Console Line)
Futurebus+ Option 6
Futurebus+ Option 5
Futurebus+ Option 4
Futurebus+ Option 3
Futurebus+ Option 2
Futurebus+ Option 1
To Outlet
Memory 2
CPU 1 Memory 1
Memory 0
64, 128 MB
System Bus
DSSI/SCSI Bus A
DSSI/SCSI Bus B
I/O
DSSI/SCSI Bus C
Module
DSSI/SCSI Bus D
SCSI Only Bus E
(Removable Media)
Futurebus+
System Configuration and Setup 6–3
Memory 3
MLO-009365