AMPTRON INTERNATIONAL. INC.
===========================

   DX-8100C

   Processor         80486SX/80487SX/80486DX/80486DX2             
   Processor Speed   20/25/33/50(internal)/50/66(internal)/MHz    
   Chip Set          Hint                                         
   Max. Onboard DRAM 128MB                                        
   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/A-B/31969-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | External battery |   JP2    | Speaker           |   JP27   |
   |------------------+----------+-------------------+----------|
   | Reset switch     |   JP24   | Turbo LED         |   JP23   |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |   JP25   | 32-bit VESA Local | SL1, SL2 |
   |                  |          | bus slots         |          |
   |------------------+----------+-------------------+----------|
   | Keylock          |   JP26   |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Enable on board battery          |  JP4   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Enable external battery          |  JP4   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP9   |   Closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP15  |   Closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP16  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP16  |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | CPU speed select 50MHz           |  JP17  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select 33MHz           |  JP17  | 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     |
   |------------------+--------------------+--------------------|
   |       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) 256K x 9    |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       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     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 16M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       65MB       |    (4) 256K x 9    |    (4) 16M x 9     |
   |------------------+--------------------+--------------------|
   |       65MB       |    (4) 16M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       68MB       |     (4) 1M x 9     |    (4) 16M x 9     |
   |------------------+--------------------+--------------------|
   |       68MB       |    (4) 16M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (4) 16M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       80MB       |     (4) 4M x 9     |    (4) 16M x 9     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (4) 16M x 9     |    (4) 16M 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   |    JP5     |    JP6     |    JP7     |    JP8    |
   |---------+------------+------------+------------+-----------|
   |  64KB   |    Open    |    Open    |    Open    |   Open    |
   |---------+------------+------------+------------+-----------|
   |  128KB  |   Closed   |    Open    |    Open    |  Closed   |
   |---------+------------+------------+------------+-----------|
   |  256KB  |   Closed   |   Closed   |   Closed   |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CACHE JUMPER CONFIGURATION (CON'T)             |
   |------------------------------------------------------------|
   | Size  |      JP12       |      JP13       |      JP14      |
   |-------+-----------------+-----------------+----------------|
   | 64KB  |   pins 1 & 2    |   pins 1 & 2    |   pins 1 & 2   |
   |       |     closed      |     closed      |     closed     |
   |-------+-----------------+-----------------+----------------|
   | 128KB |   pins 2 & 3    |   pins 2 & 3    |   pins 1 & 2   |
   |       |     closed      |     closed      |     closed     |
   |-------+-----------------+-----------------+----------------|
   | 256KB |   pins 2 & 3    |   pins 2 & 3    |   pins 2 & 3   |
   |       |     closed      |     closed      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   | CPU Type  |       JP20        |       JP21        |  JP22  |
   |-----------+-------------------+-------------------+--------|
   |  80486SX  |       Open        | pins 2 & 3 closed |  Open  |
   |-----------+-------------------+-------------------+--------|
   |  80487SX  | pins 2 & 3 closed | pins 1 & 2 closed | Closed |
   |-----------+-------------------+-------------------+--------|
   |  80486DX  | pins 1 & 2 closed | pins 1 & 2 closed | Closed |
   |-----------+-------------------+-------------------+--------|
   | 80486DX2  | pins 1 & 2 closed | pins 1 & 2 closed | Closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |          VESA WAIT STATE/BUS SPEED CONFIGURATION           |
   |------------------------------------------------------------|
   |   CPU speed   |  Wait states  |     JP10     |    JP11     |
   |---------------+---------------+--------------+-------------|
   |    < 33MHz    | 0 wait states |     Open     |    Open     |
   |---------------+---------------+--------------+-------------|
   |    > 33MHz    | 1 wait state  |    Closed    |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CLOCK CHIP CONFIGURATION                  |
   |------------------------------------------------------------|
   |      Speed       |        JP18        |        JP19        |
   |------------------+--------------------+--------------------|
   |      33MHz       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      50MHz       | pins 3 & 4 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+