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

   486UL (VER. 2)

   Processor             80486SX/80487SX/ODP486/80486DX/80486DX2  
   Processor Speed       25/33/40/50(internal)/50/66(internal)MHz 
   Chip Set              UMC                                      
   Video Chip Set        None                                     
   Maximum Onboard       64MB                                     
   Memory                
   Maximum Video Memory  None                                     
   Cache                 64/128/256KB                             
   BIOS                  AMI/Award                                
   Dimensions            250mm x 220mm                            
   I/O Options           32-bit VESA local bus slots (3)          
   NPU Options           None                                     

<gopher://bitreich.org/I/th99/m/U-Z/33407-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | External battery |    J1    | Power LED &       |    J5    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |    J2    | Reset switch      |    J6    |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |    J3    | 32-bit VESA local |  SL1 -   |
   |                  |          | bus slots         |   SL3    |
   |------------------+----------+-------------------+----------|
   | Speaker          |    J4    |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |   | Turbo switch enabled/controlled by  |  J3   |   Open   |
   |   | kbd CTRL, ALT - (low), CTRL, ALT +  |       |          |
   |   | (high)                              |       |          |
   |---+-------------------------------------+-------+----------|
   |   | Turbo switch disabled               |  J3   |  Closed  |
   |---+-------------------------------------+-------+----------|
   |>> | Any VESA card installed             |  JP9  |  1 & 2   |
   |---+-------------------------------------+-------+----------|
   |   | Weitek Power 9000 VESA card         |  JP9  |  2 & 3   |
   |   | installed                           |       |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        None        |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 16M x 9     |        None        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    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 RESISTOR CONFIGURATION                |
   |------------------------------------------------------------|
   |    Size    |      RN6      |      RN7      |      RN8      |
   |------------+---------------+---------------+---------------|
   |    64KB    |   Installed   | Not installed | Not installed |
   |------------+---------------+---------------+---------------|
   |   128KB    | Not installed |   Installed   | Not installed |
   |------------+---------------+---------------+---------------|
   |   256KB    | Not installed | Not installed |   Installed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |  Speed   |        J22        |   JP3   |   JP4   |   JP5   |
   |----------+-------------------+---------+---------+---------|
   |  25MHz   | Pins 1 & 2 closed | Closed  |  Open   |  Open   |
   |----------+-------------------+---------+---------+---------|
   |  33MHz   | Pins 1 & 2 closed | Closed  | Closed  | Closed  |
   |----------+-------------------+---------+---------+---------|
   |  40MHz   | Pins 1 & 2 closed | Closed  | Closed  |  Open   |
   |----------+-------------------+---------+---------+---------|
   |  50iMHz  | Pins 1 & 2 closed | Closed  |  Open   |  Open   |
   |----------+-------------------+---------+---------+---------|
   |  50MHz   | Pins 2 & 3 closed |  Open   |  Open   | Closed  |
   |----------+-------------------+---------+---------+---------|
   |  66iMHz  | Pins 1 & 2 closed | Closed  | Closed  | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     CPU TYPE SELECTION                     |
   |------------------------------------------------------------|
   |    Type    |           JP1            |        JP2         |
   |------------+--------------------------+--------------------|
   |  80486SX   |    Pins 2 & 3 closed     |        Open        |
   |------------+--------------------------+--------------------|
   |  80487SX   | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed  |
   |------------+--------------------------+--------------------|
   |   ODP486   | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed  |
   |------------+--------------------------+--------------------|
   |  80486DX   | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed  |
   |------------+--------------------------+--------------------|
   |  80486DX2  | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                VL BUS WAIT STATE SELECTION                 |
   |------------------------------------------------------------|
   |             Setting             |           JP13           |
   |---------------------------------+--------------------------|
   |        |           0            |           Open           |
   |--------+------------------------+--------------------------|
   |>>      |           1            |          Closed          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   VL-BUS SPEED SELECTION                   |
   |------------------------------------------------------------|
   |           CPU speed           |            JP12            |
   |-------------------------------+----------------------------|
   |           <= 33MHz            |            Open            |
   |-------------------------------+----------------------------|
   |            >33 MHz            |           Closed           |
   +------------------------------------------------------------+