DATAEXPERT CORPORATION
======================

   EISA 486WB

   Processor             80486SX/80486DX/ODP486SX                 
   Processor Speed       20/25/33/50MHz                           
   Chip Set              OPTI                                     
   Max. Onboard DRAM     128MB                                    
   SRAM Cache            64/128/256/512KB                         
   BIOS                  AMI                                      
   Dimensions            330.2mm x 218.4mm                        
   I/O Options           None                                     
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/C-D/31319-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |    J1    | Turbo switch   |    J5    |
   |---------------------+----------+----------------+----------|
   | Speaker             |    J2    | Turbo LED      |    J6    |
   |---------------------+----------+----------------+----------|
   | Reset switch        |    J3    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper  | Position  |
   |--------------------------------------+---------+-----------|
   |>> | Monitor type select color        |  JP13   |  closed   |
   |---+----------------------------------+---------+-----------|
   |   | Monitor type select monochrome   |  JP13   |   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) 256K x 9     |     (4) 1M x 9      |
   |----------------+---------------------+---------------------|
   |      8MB       |     (4) 1M x 9      |     (4) 1M x 9      |
   |----------------+---------------------+---------------------|
   |      16MB      |     (4) 4M x 9      |        NONE         |
   |----------------+---------------------+---------------------|
   |      20MB      |     (4) 1M x 9      |     (4) 4M x 9      |
   |----------------+---------------------+---------------------|
   |      20MB      |     (4) 4M x 9      |     (4) 1M x 9      |
   |----------------+---------------------+---------------------|
   |      32MB      |     (4) 4M x 9      |     (4) 4M x 9      |
   |----------------+---------------------+---------------------|
   |      64MB      |     (4) 16M x 9     |        NONE         |
   |----------------+---------------------+---------------------|
   |     128MB      |     (4) 16M x 9     |     (4) 16M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Jumper |    64KB    |   128KB    |   256KB    |   512KB    |
   |--------+------------+------------+------------+------------|
   |  JP4   | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
   |        |   closed   |   closed   |   closed   |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP5   |    open    |    open    |   closed   |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP6   |    open    |    open    |    open    |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP7   |    open    |   closed   |   closed   |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP8   |    open    |   closed   |   closed   |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP9   |    open    |    open    |   closed   |   closed   |
   |--------+------------+------------+------------+------------|
   |  JP10  |    open    |    open    |    open    |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |  Cache   | Location |   TAG    |   TAG    |  TAG   |
   |       |   SRAM   |          |  (U15)   |  (U16)   | (U17 & |
   |       |          |          |          |          |  18)   |
   |-------+----------+----------+----------+----------+--------|
   | 64KB  | (8) 8K x | Banks 0  | (1) 8K x |   NONE   |  (1)   |
   |       |    8     |   & 1    |    8     |          | 64K x  |
   |       |          |          |          |          |   1    |
   |-------+----------+----------+----------+----------+--------|
   | 128KB | (4) 32K  |  Bank 0  | (1) 8K x |   NONE   |  (1)   |
   |       |   x 8    |          |    8     |          | 64K x  |
   |       |          |          |          |          |   1    |
   |-------+----------+----------+----------+----------+--------|
   | 256KB | (8) 32K  | Banks 0  | (1) 8K x | (1) 8K x |  (1)   |
   |       |   x 8    |   & 1    |    8     |    8     | 64K x  |
   |       |          |          |          |          |   1    |
   |-------+----------+----------+----------+----------+--------|
   | 512KB | (4) 128K |  Bank 0  | (1) 32K  |   NONE   |  (1)   |
   |       |   x 8    |          |   x 8    |          | 64K x  |
   |       |          |          |          |          |   1    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |   CPU    | Jumper JP1  | Jumper  | Jumper JP3 |    JP15    |
   |          |             |   JP2   |            |            |
   |----------+-------------+---------+------------+------------|
   | ODP486SX | pins 1 & 2  |  open   | pins 1 & 2 | pins 1 & 2 |
   |          |  and 3 & 4  |         |   closed   |   closed   |
   |          |   closed    |         |            |            |
   |----------+-------------+---------+------------+------------|
   | 80486DX  | pins 1 & 2  |  open   | pins 2 & 3 | pins 1 & 2 |
   |          |  and 3 & 4  |         |   closed   |   closed   |
   |          |   closed    |         |            |            |
   |----------+-------------+---------+------------+------------|
   | 80486SX  | pins 2 & 3  | closed  |    open    | pins 2 & 3 |
   |          |   closed    |         |            |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Speed  |  Jumper JP11  | Jumper JP12  |       JP14        |
   |---------+---------------+--------------+-------------------|
   |  25MHz  |     open      |     open     | pins 2 & 3 closed |
   |---------+---------------+--------------+-------------------|
   |  33MHz  |     open      |    closed    | pins 2 & 3 closed |
   |---------+---------------+--------------+-------------------|
   |  50MHz  |    closed     |    closed    | pins 1 & 2 closed |
   +------------------------------------------------------------+