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       # EVEREX SYSTEMS, INC.
       
          3000B 386/16/20 (EV-1864)
       
          Processor         80386SX                                      
          Processor Speed   20MHz                                        
          Chip Set          C & T                                        
          Max. onboard DRAM 8MB                                          
          Cache             None                                         
          BIOS              AMI                                          
          Dimensions        355mm x 304mm                                
          I/O Options       None                                         
          NPU Options       80387SX                                      
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose                                 |     Location     |
          |-----------------------------------------+------------------|
          | External battery                        |        J4        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper |     Position      |
          |-------------------------------+--------+-------------------|
          | » | Factory configured - do   |   W1   |      Closed       |
          |   | not alter                 |        |                   |
          |---+---------------------------+--------+-------------------|
          | » | 8-bit-select 5 wait state |   W2   | pins 2 & 3 closed |
          |---+---------------------------+--------+-------------------|
          |   | 8-bit-select 4 wait state |   W2   | pins 1 & 2 closed |
          |---+---------------------------+--------+-------------------|
          | » | CPU speed select normal   |   W3   | pins 2 & 3 closed |
          |---+---------------------------+--------+-------------------|
          |   | CPU speed select high     |   W3   |       Open        |
          |---+---------------------------+--------+-------------------|
          |   | CPU speed select low      |   W3   | pins 1 & 2 closed |
          |---+---------------------------+--------+-------------------|
          | » | 16-bit select 2 wait      |   W5   | pins 1 & 2 closed |
          |   | state                     |        |                   |
          |---+---------------------------+--------+-------------------|
          |   | 16-bit select 1 wait      |   W5   | pins 2 & 3 closed |
          |   | state                     |        |                   |
          |---+---------------------------+--------+-------------------|
          | » | Factory configured - do   |   W7   |       Open        |
          |   | not alter                 |        |                   |
          |---+---------------------------+--------+-------------------|
          | » | Factory configured - do   |   W8   |      Closed       |
          |   | not alter                 |        |                   |
          |---+---------------------------+--------+-------------------|
          | » | Monitor type select color |   W9   | pins 1 & 2 closed |
          |---+---------------------------+--------+-------------------|
          |   | Monitor type select       |   W9   | pins 2 & 3 closed |
          |   | monochrome                |        |                   |
          |------------------------------------------------------------|
          | Note:Exact location of W1 & W8 is unknown.                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |   W4   |   W6   |
          |------+--------+--------+--------+--------+--------+--------|
          | 1MB  |  (2)   |  (2)   |  NONE  |  NONE  | pins 1 | pins 1 |
          |      | 256K x | 256K x |        |        |  & 2   |  & 2   |
          |      |   9    |   9    |        |        |        |        |
          |------+--------+--------+--------+--------+--------+--------|
          | 2MB  |  (2)   |  (2)   |  (2)   |  (2)   | pins 1 | pins 1 |
          |      | 256K x | 256K x | 256K x | 256K x |  & 2   |  & 2   |
          |      |   9    |   9    |   9    |   9    |        |        |
          |------+--------+--------+--------+--------+--------+--------|
          | 2MB  | (2) 1M |  NONE  |  NONE  |  NONE  | pins 2 | pins 2 |
          |      |  x 9   |        |        |        |  & 3   |  & 3   |
          |------+--------+--------+--------+--------+--------+--------|
          | 4MB  | (2) 1M | (2) 1M |  NONE  |  NONE  | pins 2 | pins 2 |
          |      |  x 9   |  x 9   |        |        |  & 3   |  & 3   |
          |------+--------+--------+--------+--------+--------+--------|
          | 6MB  | (2) 1M | (2) 1M | (2) 1M |  NONE  | pins 2 | pins 2 |
          |      |  x 9   |  x 9   |  x 9   |        |  & 3   |  & 3   |
          |------+--------+--------+--------+--------+--------+--------|
          | 8MB  | (2) 1M | (2) 1M | (2) 1M | (2) 1M | pins 2 | pins 2 |
          |      |  x 9   |  x 9   |  x 9   |  x 9   |  & 3   |  & 3   |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+