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# ZENITH DATA SYSTEMS
LN-90
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA/16-bit ISA
Topology Linear Bus
Star
Wiring Type RG-58A/U 50ohm coaxial
AUI transceiver via DB-15 port
Boot ROM Not available
IMG IMG 1
+------------------------------------------------------------+
| CABLE TYPE |
|------------------------------------------------------------|
| Type | E3/A-G |
|--------------------------------+---------------------------|
| RG-58A/U 50ohm coaxial | Pins 1 & 2 closed |
|--------------------------------+---------------------------|
| AUI transceiver via DB-15 port | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HEARTBEAT FUNCTION CONFIGURATION |
|------------------------------------------------------------|
| Mode | E6 |
|-----------------------------------+------------------------|
| » | Heartbeat function enabled | Pins 1 & 2 closed |
|---+-------------------------------+------------------------|
| | Heartbeat function disabled | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA TRANSFER SIZE SELECTION |
|------------------------------------------------------------|
| Size | E8 |
|----------------------------+-------------------------------|
| » | 16-bit | Pins 1 & 2 closed |
|---+------------------------+-------------------------------|
| | 8-bit | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | E1 |
|----------------------------+-------------------------------|
| 2/9 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3 | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 4 | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 5 | Pins 7 & 8 closed |
|----------------------------+-------------------------------|
| 6 | Pins 9 & 10 closed |
|----------------------------+-------------------------------|
| 7 | Pins 11 & 12 closed |
|----------------------------+-------------------------------|
| 10 | Pins 13 & 14 closed |
|----------------------------+-------------------------------|
| 11 | Pins 15 & 16 closed |
|----------------------------+-------------------------------|
| 12 | Pins 17 & 18 closed |
|----------------------------+-------------------------------|
| 13 | Pins 19 & 20 closed |
|----------------------------+-------------------------------|
| 14 | Pins 21 & 22 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS |
|------------------------------------------------------------|
| Address | E2 |
|--------------------------+---------------------------------|
| » | 220h | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|---+----------------------+---------------------------------|
| | 228h | Pins 1 & 2, 3 & 4, closed |
|---+----------------------+---------------------------------|
| | 230h | Pins 1 & 2, 5 & 6 closed |
|---+----------------------+---------------------------------|
| | 238h | Pins 1 & 2 closed |
|---+----------------------+---------------------------------|
| | 240h | Pins 3 & 4, 5 & 6 closed |
|---+----------------------+---------------------------------|
| | 248h | Pins 3 & 4 closed |
|---+----------------------+---------------------------------|
| | 250h | Pins 5 & 6 closed |
+------------------------------------------------------------+