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

   OPTI-80386-SX CACHE

   Processor                             80386SX                  
   Processor Speed                       25MHz                    
   Chip Set                              OPTI                     
   Max. Onboard DRAM                     16MB                     
   Cache                                 16/32/64KB               
   BIOS                                  AMI                      
   Dimensions                            220mm x 220mm            
   I/O Options                           None                     
   NPU Options                           80387SX                  

<gopher://bitreich.org/I/th99/m/C-D/30712-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J1    | Turbo LED        |    J4    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J2    | Reset switch     |    J5    |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |    J3    | External battery |    J6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Jumper | Position |
   |----------------------------------------+--------+----------|
   |>> | Monitor type select color          |  JP7   |  Closed  |
   |---+------------------------------------+--------+----------|
   |   | Monitor type select monochrome     |  JP7   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | NPU mode select asynchronous with  |  JP1   |  Closed  |
   |   | CPU                                |        |          |
   |---+------------------------------------+--------+----------|
   |   | NPU mode select synchronous with   |  JP1   |   Open   |
   |   | CPU                                |        |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 1MB  | (2) 256K x  | (2) 256K x  |    NONE    |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 256K x  | (2) 256K x  | (2) 256K x | (2) 256K x |
   |      |      9      |      9      |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 1M x 9  |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 3MB  | (2) 256K x  | (2) 256K x  | (2) 1M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (2) 1M x 9  | (2) 1M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 5MB  | (2) 256K x  | (2) 256K x  | (2) 1M x 9 | (2) 1M x 9 |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (2) 1M x 9  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (2) 1M x 9  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 |
   |------+-------------+-------------+------------+------------|
   | 9MB  | (2) 256K x  | (2) 256K x  | (2) 4M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 10MB | (2) 1M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 12MB | (2) 1M x 9  | (2) 1M x 9  | (2) 4M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (2) 4M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    16KB    |  (2) 8K x 8   |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |    32KB    |  (2) 8K x 8   |  (2) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (2) 32K x 8  |     NONE      |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size |       JP2       |       JP3       |  JP4   |  JP5   |
   |------+-----------------+-----------------+--------+--------|
   | 16KB |   pins 1 & 2    |   pins 1 & 2    |  Open  |  Open  |
   |      |     closed      |     closed      |        |        |
   |------+-----------------+-----------------+--------+--------|
   | 32KB |   pins 1 & 2    |   pins 2 & 3    | Closed |  Open  |
   |      |     closed      |     closed      |        |        |
   |------+-----------------+-----------------+--------+--------|
   | 64KB |   pins 2 & 3    |   pins 2 & 3    |  Open  | Closed |
   |      |     closed      |     closed      |        |        |
   +------------------------------------------------------------+