FUJIKAMA USA, INC.
==================

   80486DX-33/50MHz CONTAQ MAIN BOARD

   Processor             80486SX/80487SX/80486DX                  
   Processor Speed       16/20/25/33/50MHz                        
   Chip Set              CONTAQ                                   
   Max. Onboard DRAM     32MB                                     
   Cache                 64/256KB                                 
   BIOS                  AMI                                      
   Dimensions            330mm x 218mm                            
   I/O Options           Auxiliary keyboard connector             
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/E-H/30954-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose   |   Location   | Purpose            |  Location  |
   |-----------+--------------+--------------------+------------|
   | Keylock   | J3 pins 1 &  | Turbo switch       | J3 pins 15 |
   |           |      2       |                    |    - 17    |
   |-----------+--------------+--------------------+------------|
   | Power LED | J3 pins 3 -  | Reset switch       | J3 pins 19 |
   |           |      5       |                    |    & 20    |
   |-----------+--------------+--------------------+------------|
   | Speaker   | J3 pins 7 -  | Auxiliary keyboard |     J4     |
   |           |      10      |                    |            |
   |-----------+--------------+--------------------+------------|
   | Turbo LED | J3 pins 12 & | External battery   |    JP2     |
   |           |      13      |                    |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper  | Position  |
   |--------------------------------------+---------+-----------|
   |>> | Monitor type select color        |   JP1   |  Closed   |
   |---+----------------------------------+---------+-----------|
   |   | Monitor type select monochrome   |   JP1   |   Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |        TAG         |
   |------------------+--------------------+--------------------|
   |       64KB       |     (8) 8K x 8     |     (1) 8K x 8     |
   |------------------+--------------------+--------------------|
   |      256KB       |    (8) 32K x 8     |    (1) 32K x 8     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size   |                       JP8                       |
   |----------+-------------------------------------------------|
   |   64KB   | pins 1A & 2A, 3A & 4A, 1C & 2C, 3C & 4C closed. |
   |----------+-------------------------------------------------|
   |  256KB   | pins 1B & 2B, 3B & 4B, 1D & 2D, 3D & 4D closed. |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |                       JP7                       |
   |----------+-------------------------------------------------|
   | 80486SX  | pins 1B & 2B, 3B & 4B, 1D & 2D, 3D & 4D closed. |
   |----------+-------------------------------------------------|
   | 80487SX  | pins 4A & 4B, 4C & 4D, 2A & 2B, 2C & 2D closed. |
   |----------+-------------------------------------------------|
   | 80486DX  | pins 4A & 4B, 4C & 4D, 1A & 1B, 1C & 1D closed. |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Speed  | Crystal OSC1 |  JP3   |   JP5   |  JP6   |  JP9  |
   |---------+--------------+--------+---------+--------+-------|
   |  16MHz  |    32MHz     | 2 & 3  |  Open   |  Open  | 1 & 2 |
   |---------+--------------+--------+---------+--------+-------|
   |  20MHz  |    40MHz     | 1 & 2  |  Open   |  Open  | 1 & 2 |
   |---------+--------------+--------+---------+--------+-------|
   |  25MHz  |    25MHz     | 1 & 2  | Closed  |  Open  | 2 & 3 |
   |---------+--------------+--------+---------+--------+-------|
   |  33MHz  |    33MHz     | 1 & 2  |  Open   | Closed | 2 & 3 |
   |---------+--------------+--------+---------+--------+-------|
   |  50MHz  |    50MHz     | 1 & 2  | Closed  | Closed | 2 & 3 |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+