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# NETWORK DEVELOPMENT CORPORATION
MEGANET MASTER BOARD
NIC Type Device Network Architecture (DNA)
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Linear bus
Wiring Type Shielded twisted pair
Unshielded twisted pair (2 male DB-9 connectors)
Boot ROM Not available
IMG IMG 1
+------------------------------------------------------------+
| I/O BASE ADDRESS |
|------------------------------------------------------------|
| Address | JP1A | JP1B | JP1C |
|----------------+--------------+--------------+-------------|
| » | 2E0h | Open | Open | Open |
|---+------------+--------------+--------------+-------------|
| | 2E2h | Open | Open | Closed |
|---+------------+--------------+--------------+-------------|
| | 2E4h | Open | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | 2E6h | Open | Closed | Closed |
|---+------------+--------------+--------------+-------------|
| | 2E8h | Closed | Open | Open |
|---+------------+--------------+--------------+-------------|
| | 2EAh | Closed | Open | Closed |
|---+------------+--------------+--------------+-------------|
| | 2ECh | Closed | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | 2EEh | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP2A | JP2B | JP2C | JP2D |
|--------------+------------------+--------+--------+--------|
| | 2 | Closed | Open | Open | Open |
|---+----------+------------------+--------+--------+--------|
| | 3 | Open | Closed | Open | Open |
|---+----------+------------------+--------+--------+--------|
| | 4 | Open | Open | Closed | Open |
|---+----------+------------------+--------+--------+--------|
| » | 5 | Open | Open | Open | Closed |
|---+----------+------------------+--------------------------|
| | Disabled | Pins one of JP2A | |
| | | & JP2B closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLOT EIGHT ENABLE |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------------------+-------------------|
| » | Disabled | Closed |
|--------------+-------------------------+-------------------|
| | Enabled | Open |
|------------------------------------------------------------|
| Note:If the card is installed in slot 8 of an IBM XT or |
| compatible this option must be enabled. |
+------------------------------------------------------------+