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

   NE486VL2

   Processor    80486SX/80487SX/80486DX/80486DX2/Pentium          
                Overdrive                                         
   Processor    20/25/33/50(internal)/50/66(internal)MHz          
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256KB                                      
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  32-bit VESA local bus slots (2)                   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/U-Z/32228-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |   JP2    | Turbo switch     |   JP15   |
   |-------------------+----------+------------------+----------|
   | Reset switch      |   JP3    | Turbo LED        |   JP16   |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   JP9    | 32-bit VESA      |  SL1 &   |
   | keylock           |          | local bus slots  |   SL2    |
   |-------------------+----------+------------------+----------|
   | Speaker           |   JP10   |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Battey type select internal      |  JP2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery type select external     |  JP2   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP5   |    Open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP6   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP6   | pins 2 & 3 |
   |   |                                  |        |   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     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    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  |    JP8A     |    JP8B    |    JP8D    |    JP8E    |
   |-------+-------------+------------+------------+------------|
   | 64KB  | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 128KB | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 256KB | pins 2 & 3  | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Type       |   JP12   |   JP13   |  JP29   |  JP30   |
   |------------------+----------+----------+---------+---------|
   | 80486SX/DX(PQFP) | pins 2 & | pins 2 & | pins 2  | pins 2  |
   |                  | 3 closed | 3 closed |   & 3   |   & 3   |
   |                  |          |          | closed  | closed  |
   |------------------+----------+----------+---------+---------|
   |     80486SX      | pins 2 & | pins 2 & | pins 2  | pins 2  |
   |                  | 3 closed | 3 closed |   & 3   |   & 3   |
   |                  |          |          | closed  | closed  |
   |------------------+----------+----------+---------+---------|
   |     80487SX      | pins 1 & | pins 1 & | pins 2  | pins 2  |
   |                  | 2 closed | 2 closed |   & 3   |   & 3   |
   |                  |          |          | closed  | closed  |
   |------------------+----------+----------+---------+---------|
   |     80486DX      | pins 1 & | pins 1 & | pins 1  | pins 1  |
   |                  | 2 closed | 2 closed |   & 2   |   & 2   |
   |                  |          |          | closed  | closed  |
   |------------------+----------+----------+---------+---------|
   |     80486DX2     | pins 1 & | pins 1 & | pins 1  | pins 1  |
   |                  | 2 closed | 2 closed |   & 2   |   & 2   |
   |                  |          |          | closed  | closed  |
   |------------------+----------+----------+---------+---------|
   |       P23T       | pins 1 & | pins 1 & | pins 2  | pins 2  |
   |                  | 2 closed | 2 closed |   & 3   |   & 3   |
   |                  |          |          | closed  | closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | Speed  |      JP7A       |      JP7B      |      JP7C      |
   |--------+-----------------+----------------+----------------|
   | 20MHz  |   pins 2 & 3    |   pins 1 & 2   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 25MHz  |   pins 1 & 2    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 33MHz  |   pins 1 & 2    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 50iMHz |   pins 1 & 2    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 50MHz  |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 66iMHz |   pins 1 & 2    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               VESA WAIT STATE CONFIGURATION                |
   |------------------------------------------------------------|
   |        Wait states         |             JP102             |
   |----------------------------+-------------------------------|
   |       0 wait states        |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |        1 wait state        |       pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BUS SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |         CPU speed          |             JP103             |
   |----------------------------+-------------------------------|
   |          <= 33MHz          |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |          > 33MHz           |       pins 2 & 3 closed       |
   +------------------------------------------------------------+