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# INFORMTECH INTERNATIONAL, INC.
IT-NE20/IT-NE20T
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 16-bit ISA
Topology Linear Bus
Wiring Type AUI transceiver via DB-15 port
RG58A/U 50ohm coaxial
Unshielded twisted pair
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | JP6/A | JP6/B | JP6/C | JP6/D | JP6/E | JP6/F |
|--------+--------+--------+--------+--------+-------+-------|
|»| | Closed | Open | Open | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ3 | Open | Closed | Open | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ4 | Open | Open | Closed | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ5 | Open | Open | Open | Closed | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ6 | Open | Open | Open | Open |Closed | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ7 | Open | Open | Open | Open | Open |Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CABLE TYPE SELECT |
|------------------------------------------------------------|
| LAN Type | JP9/A |JP9/B |JP9/C |JP9/D |JP9/E |JP9/F |
|-----------------+-------+------+------+------+------+------|
| AUI transceiver | All | All | All | All | All | All |
| via DB-15 port | open | open | open | open | open | open |
|-----------------+-------+------+------+------+------+------|
| RG58A/U 50ohm |Pins 1 |Pins 1|Pins 1|Pins 1|Pins 1|Pins 1|
| coaxial | & 2 | & 2 | & 2 | & 2 | & 2 | & 2 |
|-----------------+-------+------+------+------+------+------|
| Unshielded |Pins 2 |Pins 2|Pins 2|Pins 2|Pins 2|Pins 2|
| twisted pair | & 3 | & 3 | & 3 | & 3 | & 3 | & 3 |
|------------------------------------------------------------|
| Note: All Pins designated should be placed in the |
| closed position. IT-NE20 has a BNC connector, |
| IT-NE20T has a RJ11. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS SELECT |
|------------------------------------------------------------|
| Address | JP7/A | JP7/B | JP7/C |
|----------------+--------------+--------------+-------------|
| » | 300h | Closed | Open | Closed |
|---+------------+--------------+--------------+-------------|
| | 200h | Open | Open | Open |
|---+------------+--------------+--------------+-------------|
| | 240h | Open | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | 280h | Closed | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | 2A0h | Open | Open | Closed |
|---+------------+--------------+--------------+-------------|
| | 320h | Closed | Open | Open |
|---+------------+--------------+--------------+-------------|
| | 340h | Open | Closed | Closed |
|---+------------+--------------+--------------+-------------|
| | 360h | Closed | Closed | Closed |
+------------------------------------------------------------+
+----------------------------------------------------------------+
| ROM ADDRESS SELECT |
|----------------------------------------------------------------|
|Address |JP8/A |JP8/B |JP8/C |JP8/D |JP8/E |JP8/F |JP8/G |JP8/H |
|--------+------+------+------+------+------+------+------+------|
|»|C8000h| Open | Open |Closed| Open | Open | Open | Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |C0000h|Closed| Open | Open | Open | Open | Open | Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |C4000h| Open |Closed| Open | Open | Open | Open | Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |CC000h| Open | Open | Open |Closed| Open | Open | Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |D0000h| Open | Open | Open | Open |Closed| Open | Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |D4000h| Open | Open | Open | Open | Open |Closed| Open | Open |
|-+------+------+------+------+------+------+------+------+------|
| |D8000h| Open | Open | Open | Open | Open | Open |Closed| Open |
|-+------+------+------+------+------+------+------+------+------|
| |DC000h| Open | Open | Open | Open | Open | Open | Open |Closed|
+----------------------------------------------------------------+