Alpha Microsystems Eagle 250 Service-Handbuch - Seite 10
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AM-138 Board Connectors
The following table provides a brief overview of the connectors on the AM-138 board.
Connector
Connector
Number
J1
UPS
J2
Parallel port
J4
Ethernet
J7
Ports 10-17
J8
Ports 20-27
J9
Ports 30-37
J10
Bank 0
J11
Bank 1
J13
SCSI-2 Wide
P1
Ports 0 - 3
P2
Ports 4 - 7
P3
Power
P4
Power
P5
Option
Connector
P6
Program
P7
SCSI-2
Run
P8
Disk
Power
Reset
P9
P10
Rev. 01
Connector
Name
Type
9-pin
25-pin
TPI
42-pin
42-pin
42-pin
SIMM
SIMM
68-pin
40-pin
40-pin
Molex
Molex
50-pin
2-pin
2-pin
2-pin
2-pin
26-pin
20-pin
Table 2: AM-138 Connectors
Cable Description and How to Use
Cable pin-1 up, use keyed cable
Cable pin-1 up, use keyed cable
RJ-45. Cannot use both this and J3.
Serial expansion (full Eagle 250 only)
Serial expansion (full Eagle 250 only)
Serial expansion (full Eagle 250 only)
First memory SIMM
Second memory SIMM
Cable pin-1 down, use keyed cable. Cannot use
both this and P7.
First four on-board ports
Second four on-board ports (full Eagle 250 only)
For +5V, +12V, -12V and GND
For +5V and GND
FOR FUTURE USE
FOR FACTORY USE ONLY
Cable pin-1 down, use keyed cable. Cannot use
both this and J13.
Run light if using 20-pin front panel display at P10
Disk activity light if using 20-pin front panel
display at P10
Power light if using 20-pin front panel display at
P10
Optionally, connect PDB-10323-00 to inner pin.
Front panel status display (AM-966-10)
Front panel status
Page 7