ZENITH DATA SYSTEMS
===================

   RS-422 CURRENT LOOP LAN INTERFACE CARD

   Card Type          Serial I/O controller                       
   Chipset Controller Unidentified                                
   I/O Options        RS-422 serial port                          
   Maximum Dram       N/A                                         

<gopher://bitreich.org/I/th99/i/U-Z/50781-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |            Purpose            |          Location          |
   |-------------------------------+----------------------------|
   | RS-422 serial interface       |            CN1             |
   +------------------------------------------------------------+

   +-------------------------------------------------------------+
   |                      INTERRUPT SELECT                       |
   |-------------------------------------------------------------|
   | IRQ |JP2/A |JP2/B |JP2/C |JP2/D |JP2/E |JP2/F |JP2/G |JP2/H |
   |-----+------+------+------+------+------+------+------+------|
   |  >>  | Open |Closed| Open | Open | Open | Open | Open | Open |
   |IRQ4 |      |      |      |      |      |      |      |      |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ3 |Closed| Open | Open | Open | Open | Open | Open | Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ5 | Open | Open |Closed| Open | Open | Open | Open | Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ10| Open | Open | Open |Closed| Open | Open | Open | Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ11| Open | Open | Open | Open |Closed| Open | Open | Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ12| Open | Open | Open | Open | Open |Closed| Open | Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ14| Open | Open | Open | Open | Open | Open |Closed| Open |
   |-----+------+------+------+------+------+------+------+------|
   |IRQ15| Open | Open | Open | Open | Open | Open | Open |Closed|
   +-------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE MEMORY ADDRESS SELECT                 |
   |------------------------------------------------------------|
   |  Address  |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |SW1/8 |
   |-----------+------+------+------+------+------+------+------|
   |>> 3F8-3FFh | Off  | Off  | Off  | Off  | Off  | Off  | Off  |
   |-----------+------+------+------+------+------+------+------|
   | 2F8-2FFh  | Off  |  On  | Off  | Off  | Off  | Off  | Off  |
   |-----------+------+------+------+------+------+------+------|
   | 1A0-1A7h  |  On  | Off  | Off  |  On  | Off  |  On  |  On  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   RTS/CTS CONFIGURATION                    |
   |------------------------------------------------------------|
   |            Setting            |            JP1             |
   |-------------------------------+----------------------------|
   | RTS/CTS handshaking disabled  |            Open            |
   |-------------------------------+----------------------------|
   |  RTS/CTS handshaking enabled  |           Closed           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            CURRENT LOOP INTERFACE CONFIGURATION            |
   |------------------------------------------------------------|
   |            Setting            |           SW1/1            |
   |-------------------------------+----------------------------|
   |           Disabled            |             On             |
   |-------------------------------+----------------------------|
   |            Enabled            |            Off             |
   +------------------------------------------------------------+