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       # ALTA RESEARCH CORPORATION
       
          TOKENCOMBO-16 S/U (ISA)
       
          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         Available                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                     COMPATIBILITY MODE                     |
          |------------------------------------------------------------|
          |                Setting                 |        JP1        |
          |----------------------------------------+-------------------|
          | »             |        Disabled        |      Closed       |
          |---------------+------------------------+-------------------|
          |               |        Enabled         |       Open        |
          |------------------------------------------------------------|
          | Note: If the system in which the card is to be installed   |
          | is an 80286 using an older C & T or VLSI chipset and the   |
          | card is not loading the network shell properly,            |
          | compatibility mode should be enabled (JP1 open). On some   |
          | revisions of this card, JP1 might not be present.          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    BASE MEMORY ADDRESS                     |
          |------------------------------------------------------------|
          |  Address   | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
          |------------+-------+-------+-------+-------+-------+-------|
          |   | C0000h |  On   |  Off  |  Off  |  Off  |  Off  |  Off  |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | C2000h |  On   |  Off  |  Off  |  Off  |  Off  |  On   |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | C4000h |  On   |  Off  |  Off  |  Off  |  On   |  Off  |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | C6000h |  On   |  Off  |  Off  |  Off  |  On   |  On   |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | C8000h |  On   |  Off  |  Off  |  On   |  Off  |  Off  |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | CA000h |  On   |  Off  |  Off  |  On   |  Off  |  On   |
          |---+--------+-------+-------+-------+-------+-------+-------|
          | » | CC000h |  On   |  Off  |  Off  |  On   |  On   |  Off  |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | CE000h |  On   |  Off  |  Off  |  On   |  On   |  On   |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | D0000h |  On   |  Off  |  On   |  Off  |  Off  |  Off  |
          |---+--------+-------+-------+-------+-------+-------+-------|
          |   | DC000h |  On   |  Off  |  On   |  Off  |  Off  |  On   |
          |------------------------------------------------------------|
          | Note: If using two cards in the same system, the card set  |
          | to secondary should use address DC000h as its default.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      SHARED RAM SIZE                       |
          |------------------------------------------------------------|
          |         Size         |      SW1/7       |      SW1/8       |
          |----------------------+------------------+------------------|
          |   |       8KB        |       Off        |       Off        |
          |---+------------------+------------------+------------------|
          | » |       16KB       |       Off        |        On        |
          |---+------------------+------------------+------------------|
          |   |       32KB       |        On        |       Off        |
          |---+------------------+------------------+------------------|
          |   |       64KB       |        On        |        On        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     INTERRUPT REQUEST                      |
          |------------------------------------------------------------|
          |         IRQ         |       SW2/1       |      SW2/2       |
          |---------------------+-------------------+------------------|
          | » |       2/9       |        Off        |       Off        |
          |---+-----------------+-------------------+------------------|
          |   |        3        |        Off        |        On        |
          |---+-----------------+-------------------+------------------|
          |   |        6        |        On         |       Off        |
          |---+-----------------+-------------------+------------------|
          |   |        7        |        On         |        On        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   NETWORK SEGMENT SPEED                    |
          |------------------------------------------------------------|
          |                  Speed                   |      SW2/3      |
          |------------------------------------------+-----------------|
          | »              |         16Mbps          |       On        |
          |----------------+-------------------------+-----------------|
          |                |          4Mbps          |       Off       |
          |------------------------------------------------------------|
          | Note: All cards on the network segment must have this      |
          | option set identically.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   PRIMARY/ALTERNATE MODE                   |
          |------------------------------------------------------------|
          |           Setting           |    Address     |    SW2/4    |
          |-----------------------------+----------------+-------------|
          | »        |     Primary      |      A20h      |     Off     |
          |----------+------------------+----------------+-------------|
          |          |    Alternate     |      A24h      |     On      |
          |------------------------------------------------------------|
          | Note: If two cards are to be used in a single system, one  |
          | of the cards must be set to primary and the other one must |
          | be set to alternate.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color | Status |             Condition              |
          |------+-------+--------+------------------------------------|
          | LED1 |  Red  |   On   |    Data is being transmitted or    |
          |      |       |        |              received              |
          |------+-------+--------+------------------------------------|
          | LED1 |  Red  |  Off   |  Data is not being transmitted or  |
          |      |       |        |              received              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    MISCELLANEOUS NOTES                     |
          |------------------------------------------------------------|
          | The card automatically senses which network connector is   |
          | being used.                                                |
          +------------------------------------------------------------+