CABLETRON SYSTEMS, INC.
=======================

   T2015

   NIC Type         Token-Ring                                    
   Transfer Rate    4/16Mbps                                      
   Data Bus         16-bit ISA                                    
   Topology         Ring                                          
   Wiring Type      Unshielded twisted pair                       
                                                                  
                    Shielded twisted pair (DB-9 port)             
   Boot ROM         Not available                                 

<gopher://bitreich.org/I/th99/n/C-D/40484-1.png>
   

   +------------------------------------------------------------+
   |                        CLOCK SOURCE                        |
   |------------------------------------------------------------|
   |               Setting                |         JP1         |
   |--------------------------------------+---------------------|
   |>>    |  Clock on card (Asynchronous  |  Pins 1 & 2 closed  |
   |      |          operation)           |                     |
   |------+-------------------------------+---------------------|
   |      |  Data bus clock (Synchronous  |  Pins 2 & 3 closed  |
   |      |          operation)           |                     |
   |------------------------------------------------------------|
   | Note: On some systems the data bus timing is not truly IBM |
   | PC/AT compatible. If the card is not                       |
   | initializing, using the data bus clock may allow the card  |
   | to operate properly.                                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |      Address       |       SW1/1       |       SW1/2       |
   |--------------------+-------------------+-------------------|
   |       0A20h        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |       0A80h        |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |       1A20h        |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |       1A80h        |        Off        |        Off        |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/n/C-D/40484-2.png>
   

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED  |  Color  | Status  |           Condition            |
   |-------+---------+---------+--------------------------------|
   | LED1  | Yellow  |   On    |  Data is being transmitted or  |
   |       |         |         |            received            |
   |-------+---------+---------+--------------------------------|
   | LED1  | Yellow  |   Off   | Data is not being transmitted  |
   |       |         |         |          or received           |
   |-------+---------+---------+--------------------------------|
   | LED2  |  Green  |   On    |   Network connection is good   |
   |-------+---------+---------+--------------------------------|
   | LED2  |   Red   |   On    |  Network connection is broken  |
   |-------+---------+---------+--------------------------------|
   | LED3  |  Green  |   On    | Card is set to 4Mbps operation |
   |-------+---------+---------+--------------------------------|
   | LED4  | Yellow  |   On    |     Card is set to 16Mbps      |
   |       |         |         |           operation            |
   |------------------------------------------------------------|
   | Note:LED2 is a two color LED. LED2 will light red when     |
   | power is first applied to the card.                        |
   +------------------------------------------------------------+