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

   391WB/H

   Processor         80386DX/AMD80386DX                           
   Processor Speed   33/40MHz                                     
   Chip Set          OPTI                                         
   Max. Onboard DRAM 32MB                                         
   Cache             32/64/128/256KB                              
   BIOS              AMI                                          
   Dimensions        220mm x 220mm                                
   I/O Options       None                                         
   NPU Options       80387DX/3167                                 

<gopher://bitreich.org/I/th99/m/U-Z/31576-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J1    | Reset switch     |    J4    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J2    | Turbo switch     |    J5    |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |    J3    | External battery |   JP13   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper  | Position  |
   |--------------------------------------+---------+-----------|
   |>> | Turbo mode disabled              |   J5    |  Closed   |
   |---+----------------------------------+---------+-----------|
   |   | Turbo mode enabled               |   J5    |   Open    |
   |---+----------------------------------+---------+-----------|
   |>> | NPU asynchronous with CPU        |   JP8   |  Closed   |
   |---+----------------------------------+---------+-----------|
   |   | NPU synchronous with CPU         |   JP8   |   Open    |
   |---+----------------------------------+---------+-----------|
   |>> | I/O bus speed select ATCLK/6     |   JP9   |   Open    |
   |---+----------------------------------+---------+-----------|
   |   | I/O bus speed select ATCLK/8     |   JP9   |  Closed   |
   |---+----------------------------------+---------+-----------|
   |>> | Monitor type select monochrome   |  JP12   |   Open    |
   |---+----------------------------------+---------+-----------|
   |   | Monitor type select color        |  JP12   |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    32KB    |  (4) 8K x 8   |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |Size |JP1 |JP2 |JP3| JP4  | JP5  | JP6  |JP14|JP15|JP16|JP17|
   |-----+----+----+---+------+------+------+----+----+----+----|
   |32KB |1 & |1 & |1 &| Open | Open | Open |2 & |1 & |1 & |1 & |
   |     | 2  | 2  | 2 |      |      |      | 3  | 2  | 2  | 2  |
   |-----+----+----+---+------+------+------+----+----+----+----|
   |64KB |1 & |1 & |2 &| Open | Open |Closed|2 & |1 & |1 & |1 & |
   |     | 2  | 2  | 3 |      |      |      | 3  | 2  | 2  | 2  |
   |-----+----+----+---+------+------+------+----+----+----+----|
   |128KB|2 & |1 & |2 &|Closed| Open |Closed|2 & |1 & |1 & |1 & |
   |     | 3  | 2  | 3 |      |      |      | 3  | 2  | 2  | 2  |
   |-----+----+----+---+------+------+------+----+----+----+----|
   |256KB|2 & |2 & |2 &|Closed|Closed|Closed|2 & |1 & |1 & |1 & |
   |     | 3  | 3  | 3 |      |      |      | 3  | 2  | 2  | 2  |
   |------------------------------------------------------------|
   |Note: Pins designated should be in the closed position.     |
   +------------------------------------------------------------+