AMERICAN RESEARCH CORPORATION
=============================

   ETHERFLEX PLUS 8B, PCN014

   NIC Type         Ethernet                                      
   Transfer Rate    10Mbps                                        
   Data Bus         8-bit ISA                                     
   Topology         Star                                          
                                                                  
                    Linear Bus                                    
   Wiring Type      Unshielded twisted pair                       
                                                                  
                    RG-58A/U 50ohm coaxial                        
                                                                  
                    AUI transceiver via DB-15 port                
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/A-B/40195-1.png>
   

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |   Address    |   SW1/1   |   SW1/2   |  SW1/3   |  SW1/4   |
   |--------------+-----------+-----------+----------+----------|
   |   |   200h   |    On     |    On     |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   220h   |    Off    |    On     |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   240h   |    On     |    Off    |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   260h   |    Off    |    Off    |    On    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |>> |   280h   |    On     |    On     |   Off    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   2A0h   |    Off    |    On     |   Off    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   2C0h   |    On     |    Off    |   Off    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   2E0h   |    Off    |    Off    |   Off    |    On    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   300h   |    On     |    On     |    On    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   320h   |    Off    |    On     |    On    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   340h   |    On     |    Off    |    On    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   360h   |    Off    |    Off    |    On    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   380h   |    On     |    On     |   Off    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   3A0h   |    Off    |    On     |   Off    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   3C0h   |    On     |    Off    |   Off    |   Off    |
   |---+----------+-----------+-----------+----------+----------|
   |   |   3E0h   |    Off    |    Off    |   Off    |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          BOOT ROM                          |
   |------------------------------------------------------------|
   |             Setting             |          SW1/5           |
   |---------------------------------+--------------------------|
   |>> |          Disabled           |           Off            |
   |---+-----------------------------+--------------------------|
   |   |           Enabled           |            On            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      BOOT ROM ADDRESS                      |
   |------------------------------------------------------------|
   |    Address     |  SW1/6   |  SW1/7   |  SW1/8   |  SW1/9   |
   |----------------+----------+----------+----------+----------|
   |   |   C0000h   |    On    |    On    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   C4000h   |    On    |    On    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   C8000h   |    On    |    On    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   CC000h   |    On    |    On    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   D0000h   |    On    |   Off    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   D4000h   |    On    |   Off    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   D8000h   |    On    |   Off    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |>> |   DC000h   |    On    |   Off    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   E0000h   |   Off    |    On    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   E4000h   |   Off    |    On    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   E8000h   |   Off    |    On    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   EC000h   |   Off    |    On    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   F0000h   |   Off    |   Off    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   F4000h   |   Off    |   Off    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   F8000h   |   Off    |   Off    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   FC000h   |   Off    |   Off    |   Off    |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      RAM BUFFER SIZE                       |
   |------------------------------------------------------------|
   |   Size   |    JP1     |    JP8     |   JP11    |   JP12    |
   |----------+------------+------------+-----------+-----------|
   |>> | 8KB  | Pins 1 & 2 | Pins 1 & 2 | Pins 2 &  | Pins 2 &  |
   |   |      |   Closed   |   Closed   | 3 Closed  | 3 Closed  |
   |---+------+------------+------------+-----------+-----------|
   |   | 32KB | Pins 2 & 3 | Pins 2 & 3 | Pins 1 &  | Pins 1 &  |
   |   |      |   Closed   |   Closed   | 2 Closed  | 2 Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |          Type          | JP2 - JP7 |    JP9    |   JP10    |
   |------------------------+-----------+-----------+-----------|
   |   Unshielded twisted   | Pins 2 &  | Pins 1 &  | Pins 1 &  |
   |          pair          | 3 Closed  | 2 Closed  | 2 Closed  |
   |------------------------+-----------+-----------+-----------|
   |  AUI transceiver via   | Pins 1 &  | Pins 2 &  | Pins 2 &  |
   |       DB-15 port       | 2 Closed  | 3 Closed  | 3 Closed  |
   |------------------------+-----------+-----------+-----------|
   | RG-58A/U 50ohm coaxial | Pins 1 &  | Pins 1 &  | Pins 1 &  |
   |                        | 2 Closed  | 2 Closed  | 2 Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     INTERRUPT REQUEST                      |
   |------------------------------------------------------------|
   | IRQ  | JP13A  | JP13B  | JP13C  | JP13D  | JP13E  | JP13F  |
   |------+--------+--------+--------+--------+--------+--------|
   | | 2  | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
   |-+----+--------+--------+--------+--------+--------+--------|
   |>>| 3  |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
   |-+----+--------+--------+--------+--------+--------+--------|
   | | 4  |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
   |-+----+--------+--------+--------+--------+--------+--------|
   | | 5  |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
   |-+----+--------+--------+--------+--------+--------+--------|
   | | 6  |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
   |-+----+--------+--------+--------+--------+--------+--------|
   | | 7  |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FACTORY CONFIGURED SETTINGS                 |
   |------------------------------------------------------------|
   |            Switch            |           Setting           |
   |------------------------------+-----------------------------|
   |            SW1/10            |            Open             |
   +------------------------------------------------------------+