AST-RSN                                             AST Part Number 202075-001

The AST Resource Sharing Network (RSN) is a high-performance Local Area
Network (LAN) designed to run in the IBM PC, PC/XT, PC/AT, and 100%
compatibles.  RSN operates at five megabits per second over industry standard
RG-59 coaxial cable.  This product can interconnect up to 64 PC's at distances
of up to 1500 feet.  Each RSN adapter has an individual network address preset
at the factory.


SWITCH SETTINGS

    Interrupt Request

             IRQ2  IRQ3  IRQ4  IRQ5
             ----  ----  ----  ----
        SW1   ON    OFF   ON    OFF
        SW2   ON    ON    OFF   OFF

        NOTE: AST recommends the use of IRQ2 in XT compatible
              machines and IRQ5 in AT compatibles.

              ALWAYS AVOID IRQ2 IN AT COMPATIBLES.

    Factory Test

        SW3 and SW4 are for factory tests, and should remain in
        the "on" position at all times


    Shared Memory Address

                      SW5  SW6  SW7  SW8
                     ----  ---  ---  ---
        C0000-C3FFF   ON   ON   ON   ON
        C4000-C7FFF   OFF  ON   ON   ON
        C8000-CBFFF   ON   OFF  ON   ON
        CC000-CFFFF   OFF  OFF  ON   ON (Factory Default)
        D0000-D3FFF   ON   ON   OFF  ON
        D4000-D7FFF   OFF  ON   OFF  ON
        D8000-DBFFF   ON   OFF  OFF  ON
        DC000-DFFFF   OFF  OFF  OFF  ON
        E0000-E3FFF   ON   ON   ON   OFF
        E4000-E7FFF   OFF  ON   ON   OFF
        E8000-EBFFF   ON   OFF  ON   OFF
        EC000-EFFFF   OFF  OFF  ON   OFF


JUMPER SETTINGS

    There are two jumpers on the RSN used for factory tests.
    J3 is ALWAYS installed; J4 is ALWAYS open














SWITCH AND JUMPER LOCATIONS

    ͻ
                                                                   
       : J3                                                       Ķ
                                                                   
                                J4 :                               
                                         SW-1                      
     \                                  +------+                    COAX
                                       +------+                    CONN.
                                                                   
                                                                   
                                                                  Ķ
     ͻ            ͼ 
                                                 ͼ      
                                                                     
