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# 3COM CORPORATION
ETHERLINK II (3C503; ASSY.#2227)
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Linear Bus
Wiring Type RG-58A/U 50ohm coaxial
DIX transceiver via DB-15 port
Boot ROM Available
(IMG) IMG 1
+------------------------------------------------------------+
| BOOT ROM ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | JP1 | JP2 | JP3 | JP4 | JP5 |
|--------------+---------+--------+--------+--------+--------|
| ยป | Disabled | Closed | Open | Open | Open | Open |
|---+----------+---------+--------+--------+--------+--------|
| | C8000h | Open | Open | Open | Open | Closed |
|---+----------+---------+--------+--------+--------+--------|
| | CC000h | Open | Open | Open | Closed | Open |
|---+----------+---------+--------+--------+--------+--------|
| | D8000h | Open | Open | Closed | Open | Open |
|---+----------+---------+--------+--------+--------+--------|
| | DC000h | Open | Closed | Open | Open | Open |
+------------------------------------------------------------+
+---------------------------------------------------------------+
| I/O BASE ADDRESS SELECTION |
|---------------------------------------------------------------|
|Address| JP6 | JP7 | JP8 | JP9 | JP10 | JP11 | JP12 | JP13 |
|-------+------+------+------+------+------+------+------+------|
| 250h | Open | Open | Open | Open |Closed| Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 280h | Open | Open | Open | Open | Open |Closed| Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 2A0h | Open | Open | Open | Open | Open | Open |Closed| Open |
|-------+------+------+------+------+------+------+------+------|
| 2E0h | Open | Open | Open | Open | Open | Open | Open |Closed|
|-------+------+------+------+------+------+------+------+------|
| 300h |Closed| Open | Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 310h | Open |Closed| Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 330h | Open | Open |Closed| Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 350h | Open | Open | Open |Closed| Open | Open | Open | Open |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| The interrupt request and cable type are set using the |
| software that comes with the card. |
+------------------------------------------------------------+