User`s guide

KA52/53/54 CPU Module Description
1.1 KA52/53/54 CPU Module
Figure 1–3 KA52/53/54 Controls, Indicators, Ports, and Connectors
DSW42
Logic Board
Connectors
DHW42
Logic Board
Connectors
Basic
System
Memory
Connector
Memory
Expansion
Connectors
DHW42
I/O Connector
DSW42
I/O Connector
MMJ Port 0
MMJ Port 1
Internal SCSI Connector
Basic System
Memory Connector
Memory Expansion
Connectors
External SCSI
Connector
Power
Connector
ThinWire
Ethernet Port
Ethernet
Standard
Ethernet Port
LED Display
Break/Enable LED
Break/Enable Switch
Halt Push Button
Asynchronous Modem
Control Port 2
MMJ Port 3
DSSI
Connector
Switch
Q-Bus Connector
MLO-009882
Table 1–1 Functions of Controls, Indicators, Connectors
Component Description
DSSI connector An internal logic board connector for mounting a DSSI logic
board which provides one or two DSSI buses inside the
system enclosure.
(continued on next page)
1–6 KA52/53/54 CPU Module Description