DTK COMPUTER, INC.
==================

   PKM-0037S

   Processor    CX486M6/80486SX/80487SX/80486DX/80486DX2/Pentium  
                Overdrive                                         
   Processor    20/25/33/40/50(internal)/50/66(internal)MHz       
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256KB                                      
   BIOS         Unidentified                                      
   Dimensions   254mm x 218mm                                     
   I/O Options  32-bit VESA local bus slots (2)                   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/32633-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Power LED &   |   CN1    | Reset switch         |   CN5    |
   | keylock       |          |                      |          |
   |---------------+----------+----------------------+----------|
   | Speaker       |   CN2    | External battery     |   CN6    |
   |---------------+----------+----------------------+----------|
   | Turbo switch  |   CN3    | 32-bit VESA local    |  SL1 -   |
   |               |          | bus slots            |   SL2    |
   |---------------+----------+----------------------+----------|
   | Turbo LED     |   CN4    |                      |          |
   |------------------------------------------------------------|
   | Note: The location of CN1 - CN6 are unidentified.          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | A20 Source type select chip      |  JP17  | pins 1 & 2 |
   |   | supported                        |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | A20 Source type select 8042      |  JP17  | pins 2 & 3 |
   |   | supported                        |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP18  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP18  |   Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |   Size    |         Bank 0         |        Bank 1         |
   |-----------+------------------------+-----------------------|
   |    1MB    |      (4) 256K x 9      |         NONE          |
   |-----------+------------------------+-----------------------|
   |    2MB    |      (4) 256K x 9      |     (4) 256K x 9      |
   |-----------+------------------------+-----------------------|
   |    2MB    |      (4) 512K x 9      |         NONE          |
   |-----------+------------------------+-----------------------|
   |    4MB    |      (4) 512K x 9      |     (4) 512K x 9      |
   |-----------+------------------------+-----------------------|
   |    4MB    |        (4) 1M x 9      |         NONE          |
   |-----------+------------------------+-----------------------|
   |    6MB    |      (4) 512K x 9      |       (4) 1M x 9      |
   |-----------+------------------------+-----------------------|
   |    8MB    |        (4) 1M x 9      |       (4) 1M x 9      |
   |-----------+------------------------+-----------------------|
   |    8MB    |        (4) 2M x 9      |         NONE          |
   |-----------+------------------------+-----------------------|
   |   16MB    |        (4) 2M x 9      |       (4) 2M 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 1      |    TAG 2     |
   |-------+---------+---------+-----------------+--------------|
   | 64KB  | (4) 8K  | (4) 8K  |   (1) 8K x 8    |  (1) 8K x 8  |
   |       |   x 8   |   x 8   |                 |              |
   |-------+---------+---------+-----------------+--------------|
   | 128KB | (4) 32K | (4) 32K |   (1) 8K x 8    |  (1) 8K x 8  |
   |       |   x 8   |   x 8   |                 |              |
   |-------+---------+---------+-----------------+--------------|
   | 256KB | (4) 32K | (4) 32K | (1) 16K x 8 or  | (1) 16K x 8  |
   |       |   x 8   |   x 8   |   (1) 32K x 8   | or (1) 32K x |
   |       |         |         |                 |      8       |
   |------------------------------------------------------------|
   | Note: The location of TAG 2 is unidentified.               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |     JP1     |    JP2     |    JP3     |    JP4     |
   |-------+-------------+------------+------------+------------|
   | 64KB  | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 128KB | pins 2 & 3  | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 256KB | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CACHE JUMPER CONFIGURATION (CON'T)             |
   |------------------------------------------------------------|
   | Size  |       JP5       |       JP6       |      JP7       |
   |-------+-----------------+-----------------+----------------|
   | 64KB  |   pins 2 & 3    |      Open       |   pins 1 & 2   |
   |       |     closed      |                 |     closed     |
   |-------+-----------------+-----------------+----------------|
   | 128KB |   pins 1 & 2    |   pins 1 & 2    |   pins 2 & 3   |
   |       |     closed      |     closed      |     closed     |
   |-------+-----------------+-----------------+----------------|
   | 256KB |   pins 2 & 3    |   pins 2 & 3    |   pins 2 & 3   |
   |       |     closed      |     closed      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |      Type       |      JP13      |      JP14      |  JP15  |
   |-----------------+----------------+----------------+--------|
   |     CX486M6     |      Open      |   pins 2 & 3   |  Open  |
   |                 |                |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |  80486SX(PQFP)  |      Open      |   pins 2 & 3   |  Open  |
   |                 |                |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |  80486SX(PGA)   |      Open      |   pins 2 & 3   |  Open  |
   |                 |                |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |     80487SX     |   pins 2 & 3   |   pins 1 & 2   | Closed |
   |                 |     closed     |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |     80486DX     |   pins 1 & 2   |   pins 1 & 2   | Closed |
   |                 |     closed     |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |    80486DX2     |   pins 1 & 2   |   pins 1 & 2   | Closed |
   |                 |     closed     |     closed     |        |
   |-----------------+----------------+----------------+--------|
   |     Pentium     |   pins 2 & 3   |   pins 1 & 2   | Closed |
   |    Overdrive    |     closed     |     closed     |        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |        Type        |       JP16       |        JP27        |
   |--------------------+------------------+--------------------|
   |      CX486M6       |      Closed      | pins 2 & 3 closed  |
   |--------------------+------------------+--------------------|
   |   80486SX(PQFP)    |       Open       | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |    80486SX(PGA)    |      Closed      | pins 2 & 3 closed  |
   |--------------------+------------------+--------------------|
   |      80487SX       |      Closed      | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |      80486DX       |      Closed      | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   |      80486DX2      |      Closed      | pins 1 & 2 closed  |
   |--------------------+------------------+--------------------|
   | Pentium Overdrive  |      Closed      | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |     Speed     |     JP20     |     JP21     |     JP22     |
   |---------------+--------------+--------------+--------------|
   |     20MHz     |     Open     |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |     25MHz     |     Open     |     Open     |    Closed    |
   |---------------+--------------+--------------+--------------|
   |     33MHz     |    Closed    |    Closed    |    Closed    |
   |---------------+--------------+--------------+--------------|
   |     40MHz     |     Open     |    Closed    |    Closed    |
   |---------------+--------------+--------------+--------------|
   |    50iMHz     |     Open     |     Open     |    Closed    |
   |---------------+--------------+--------------+--------------|
   |     50MHz     |    Closed    |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |    66iMHz     |    Closed    |    Closed    |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               VESA WAIT STATE CONFIGURATION                |
   |------------------------------------------------------------|
   |   Wait states    |        JP9         |        JP11        |
   |------------------+--------------------+--------------------|
   |  0 wait states   | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   1 wait state   | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BUS SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |    CPU speed     |        JP8         |        JP10        |
   |------------------+--------------------+--------------------|
   |     <= 33MHz     | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |     > 33MHz      | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+