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# ABC COMPUTER COMPANY, LTD.
ETHERNET A3251
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 16-bit ISA
Topology Linear Bus
Wiring Type RG-58A/U 50ohm coaxial
AUI transceiver via DB-15 port
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP6 | JP7 | JP8 | JP9 |
|-----------+------------+-----------+-----------+-----------|
| | 2 | Closed | Open | Open | Open |
|---+-------+------------+-----------+-----------+-----------|
| » | 3 | Open | Closed | Open | Open |
|---+-------+------------+-----------+-----------+-----------|
| | 4 | Open | Open | Closed | Open |
|---+-------+------------+-----------+-----------+-----------|
| | 5 | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM |
|------------------------------------------------------------|
| Type | JP1 |
|----------------------------+-------------------------------|
| » | Enabled | Pins 1 & 2 Closed |
|---+------------------------+-------------------------------|
| | Disabled | Pins 2 & 3 Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CABLE TYPE |
|------------------------------------------------------------|
| Type | JP10 - JP13 & | JP16 - JP18 & |
| | JP15 | JP20 - JP21 |
|----------------------------+---------------+---------------|
| » | RG-58A/U 50ohm coaxial | Closed | Open |
|---+------------------------+---------------+---------------|
| | AUI transceiver via | Open | Closed |
| | DB-15 port | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS |
|------------------------------------------------------------|
| I/O Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
|----------------+----------+----------+----------+----------|
| | 280-29F | On | On | On | On |
|---+------------+----------+----------+----------+----------|
| » | 2A0-2BF | On | Off | On | On |
|---+------------+----------+----------+----------+----------|
| | 2C0-2DF | On | On | Off | On |
|---+------------+----------+----------+----------+----------|
| | 2E0-2FF | On | Off | Off | On |
|---+------------+----------+----------+----------+----------|
| | 300-31F | On | On | On | Off |
|---+------------+----------+----------+----------+----------|
| | 320-33F | On | Off | On | Off |
|---+------------+----------+----------+----------+----------|
| | 340-35F | On | On | Off | Off |
|---+------------+----------+----------+----------+----------|
| | 360-37F | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY ADDRESS |
|------------------------------------------------------------|
| Base Address | SW1/5 | SW1/6 |
|------------------------+-----------------+-----------------|
| | C0000-C3FFF | On | On |
|---+--------------------+-----------------+-----------------|
| | C4000-C7FFF | Off | On |
|---+--------------------+-----------------+-----------------|
| | C8000-CBFFF | On | Off |
|---+--------------------+-----------------+-----------------|
| » | CC000- CFFFF | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS NOTES |
|------------------------------------------------------------|
| Different drivers must be used for the National & the |
| Fujitsu chipset cards, & are not interchangeable. Fujitsu |
| adapters may be used for either 8 or 16 bit Fujitsu cards. |
| While the National chipset cards require a different |
| driver for an 8 or 16 bit card. |
+------------------------------------------------------------+