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

   351 386DX/486DLC

   Processor         80386DX/CX486DLC                             
   Processor Speed   25/33/40MHz                                  
   Chip Set          UMC                                          
   Max. Onboard DRAM 32MB                                         
   Cache             64/128/256KB                                 
   BIOS              MR BIOS                                      
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       80387DX/3167                                 

<gopher://bitreich.org/I/th99/m/U-Z/31876-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | External battery |   JP1    | Turbo LED         |   JP12   |
   |------------------+----------+-------------------+----------|
   | Reset switch     |   JP9    | Speaker           |   JP14   |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |   JP10   | Keylock & power   |   JP15   |
   |                  |          | LED               |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |   | Function                      |   Jumper    | Position |
   |---+-------------------------------+-------------+----------|
   |   | Monitor type select color     |    JP13     |  Closed  |
   |---+-------------------------------+-------------+----------|
   |   | Monitor type select           |    JP13     |   Open   |
   |   | monochrome                    |             |          |
   |---+-------------------------------+-------------+----------|
   |>> | Coprocessor not installed     | JP18 & JP19 |   Open   |
   |---+-------------------------------+-------------+----------|
   |   | Coprocessor installed         | JP18 & JP19 |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 1   |
   |------------+---------------+---------------+---------------|
   |   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  |    JP4     |   JP5    |   JP6    |  JP7   |  JP8   |
   |-------+------------+----------+----------+--------+--------|
   | 64KB  | pins 1 & 2 | pins 2 & |   Open   |  Open  |  Open  |
   |       |            |    3     |          |        |        |
   |-------+------------+----------+----------+--------+--------|
   | 128KB | pins 2 & 3 | pins 1 & | pins 1 & |  Open  | Closed |
   |       |            |    2     |    2     |        |        |
   |-------+------------+----------+----------+--------+--------|
   | 256KB | pins 1 & 2 | pins 1 & | pins 2 & | Closed | Closed |
   |       |            |    2     |    3     |        |        |
   |------------------------------------------------------------|
   | Note:  Pins designated should be in the closed position.   |
   +------------------------------------------------------------+

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