DIGITAL COMMUNICATIONS ASSOCIATES, INC.
=======================================

   IRMA 2-ISA

   Category               Serial communications adapter           
   Chipset Controller     Unidentified                            
   I /O Options Supported Serial port                             
   Maximum Onboard Memory N/A                                     

<gopher://bitreich.org/I/th99/i/C-D/50845-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |            Purpose            |          Location          |
   |-------------------------------+----------------------------|
   | Serial port - coaxial         |            CN1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     220H BASE ADDRESS                      |
   |------------------------------------------------------------|
   |             Setting             |          SW1/2           |
   |---------------------------------+--------------------------|
   |>> |           Enabled           |            On            |
   |---+-----------------------------+--------------------------|
   |   |          Disabled           |           Off            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        I/O ADDRESS                         |
   |------------------------------------------------------------|
   |       Address        |      SW1/3       |      SW1/4       |
   |----------------------+------------------+------------------|
   |>> |       280h       |        On        |        On        |
   |---+------------------+------------------+------------------|
   |   |       2A0h       |        On        |       Off        |
   |---+------------------+------------------+------------------|
   |   |       2C0h       |       Off        |        On        |
   |---+------------------+------------------+------------------|
   |   |       300h       |       Off        |       Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INTERRUPT SELECT                      |
   |------------------------------------------------------------|
   |         IRQ          |      SW1/5       |      SW1/6       |
   |----------------------+------------------+------------------|
   |>> |       IRQ2       |        On        |        On        |
   |---+------------------+------------------+------------------|
   |   |       IRQ3       |        On        |       Off        |
   |---+------------------+------------------+------------------|
   |   |       IRQ4       |       Off        |        On        |
   |---+------------------+------------------+------------------|
   |   |       IRQ7       |       Off        |       Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FACTORY CONFIGURED SETTINGS                 |
   |------------------------------------------------------------|
   |            Switch            |           Setting           |
   |------------------------------+-----------------------------|
   |            SW1/1             |             Off             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |   The location of SW1 is not specified in manufacturer's   |
   |                       documentation.                       |
   +------------------------------------------------------------+