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       # JOINDATA SYSTEMS, INC.
       
          G386B Version 2
       
          Processor         80386DX                                      
          Processor Speed   20/25MHz                                     
          Chip Set          UMC                                          
          Max. onboard DRAM 16MB                                         
          Cache             None                                         
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       32-bit external memory card                  
          NPU Options       80287/80387DX                                
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose      | Location | Purpose               | Location |
          |--------------+----------+-----------------------+----------|
          | Reset switch |   JP2    | Speaker               |   JP6    |
          |--------------+----------+-----------------------+----------|
          | Turbo LED    |   JP1    | Power LED & keylock   |   JP7    |
          |--------------+----------+-----------------------+----------|
          | Turbo switch |   JP3    | 32-bit external       |    S1    |
          |              |          | memory card           |          |
          |--------------+----------+-----------------------+----------|
          | Unknown      |   JP4    |                       |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function             | Jumper/Switch | Position |
          |---------------------------------+---------------+----------|
          | » | Monitor type select color   |      W11      |  Closed  |
          |---+-----------------------------+---------------+----------|
          |   | Monitor type select         |      W11      |   Open   |
          |   | monochrome                  |               |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (36) 41256  | (36) 41256  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (36) 411000 | (36) 411000 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (36) 411000 | (36) 411000 |    (36)    |    (36)    |
          |      |             |             |   411000   |   411000   |
          |------------------------------------------------------------|
          | Note:Banks 2 and 3 are located on the external memory      |
          | card.                                                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     NPU CONFIGURATION                      |
          |------------------------------------------------------------|
          |        NPU         |        JP9         |       JP10       |
          |--------------------+--------------------+------------------|
          |       80287        | pins 2 & 3 closed  |       Open       |
          |--------------------+--------------------+------------------|
          |       80387        | pins 1 & 2 closed  |      Closed      |
          |--------------------+--------------------+------------------|
          |   Not installed    |        Open        |       Open       |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          | System  |     J1A      |    J1B    |    J2A    |    J2B    |
          | Memory  |              |           |           |           |
          |---------+--------------+-----------+-----------+-----------|
          |   0KB   |  pins 1 & 2  | pins 1 &  | pins 1 &  | pins 1 &  |
          |         |    closed    | 2 closed  | 2 closed  | 2 closed  |
          |---------+--------------+-----------+-----------+-----------|
          |   2MB   |  pins 2 & 3  | pins 2 &  | pins 2 &  | pins 2 &  |
          |         |    closed    | 3 closed  | 3 closed  | 3 closed  |
          |---------+--------------+-----------+-----------+-----------|
          |   8MB   |  pins 2 & 3  | pins 2 &  | pins 2 &  | pins 2 &  |
          |         |    closed    | 3 closed  | 3 closed  | 3 closed  |
          +------------------------------------------------------------+