UNIDENTIFIED
============

   OPTI-486WB (VERSION 2)

   Processor         80486SX/80486DX                              
   Processor Speed   33MHz                                        
   Chip Set          OPTI                                         
   Max. onboard DRAM 32MB                                         
   Cache             64/128/256/512KB                             
   BIOS              AMI                                          
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       4167                                         

<gopher://bitreich.org/I/th99/m/U-Z/31612-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J1    | Reset switch     |    J4    |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |    J2    | External battery |   J22    |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J3    | Turbo LED        |   JP1    |
   | keylock           |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Jumper | Position |
   |----------------------------------------+--------+----------|
   |>> | Monitor type select color          |  JP12  |  Closed  |
   |---+------------------------------------+--------+----------|
   |   | Monitor type select monochrome     |  JP12  |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |  JP11  |   N/A    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size   |   Bank 0    |   Bank 1    |  TAG U34  | TAG U35  |
   |---------+-------------+-------------+-----------+----------|
   |  64KB   | (8) 8K x 8  |    NONE     |   NONE    |  8K x 8  |
   |---------+-------------+-------------+-----------+----------|
   |  128KB  | (8) 8K x 8  | (8) 8K x 8  |   NONE    |  8K x 8  |
   |---------+-------------+-------------+-----------+----------|
   |  256KB  | (8) 32K x 8 |    NONE     |   NONE    |  8K x 8  |
   |---------+-------------+-------------+-----------+----------|
   |  512KB  | (8) 32K x 8 | (8) 32K x 8 |  8K x 8   |  8K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size  |   JP6   |    JP7     |   JP8   |   JP9   |  JP10  |
   |--------+---------+------------+---------+---------+--------|
   |  64KB  |  Open   | pins 2 & 3 |  Open   |  Open   |  Open  |
   |--------+---------+------------+---------+---------+--------|
   | 128KB  | Closed  | pins 2 & 3 |  Open   |  Open   | Closed |
   |--------+---------+------------+---------+---------+--------|
   | 256KB  | Closed  | pins 2 & 3 |  Open   | Closed  | Closed |
   |--------+---------+------------+---------+---------+--------|
   | 512KB  | Closed  | pins 1 & 2 | Closed  | Closed  | Closed |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |        JP2        |        JP3        |   JP4   |
   |----------+-------------------+-------------------+---------|
   | 80486DX  | pins 1 & 2 closed | pins 2 & 3 closed | Closed  |
   |----------+-------------------+-------------------+---------|
   | 80486SX  |       Open        | pins 1 & 2 closed |  Open   |
   +------------------------------------------------------------+