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

   GRAFIKA 4V2

   Processor    80486SX/80487SX/80486DX/80486DX2/Pentium          
                Overdrive                                         
   Processor    20/25/33/40/50(internal)/50/66(internal)MHz       
   Speed        
   Chip Set     SIS                                               
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256KB                                      
   BIOS         AMI/Award/DTK                                     
   Dimensions   260mm x 220mm                                     
   I/O Options  32-bit VESA local bus slots (2)                   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/33096-1.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    |                      |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Battery type select external   |  JP12  |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | Battery type select internal   |  JP12  |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |>> | CPU type select PGA            |  JP16  |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | CPU type select PQFP           |  JP16  |     Open     |
   |---+--------------------------------+--------+--------------|
   |>> | A20 chip supported             |  JP17  |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | 8042 chip supported            |  JP17  |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |>> | Monitor type select monochrome |  JP18  |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select color      |  JP18  |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |    (4) 512K x 9    |    (4) 512K x 9    |
   |------------------+--------------------+--------------------|
   |       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) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 2M x 9     |     (4) 2M x 9     |
   |------------------+--------------------+--------------------|
   |       18MB       |    (4) 512K x 9    |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       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 (U14)  |  TAG (U15)  |
   |-------+-----------+------------+-------------+-------------|
   | 64KB  | (4) 8K x  | (4) 8K x 8 | (1) 8K x 8  | (1) 8K x 8  |
   |       |     8     |            |             |             |
   |-------+-----------+------------+-------------+-------------|
   | 128KB | (4) 32K x |    NONE    | (1) 8K x 8  | (1) 8K x 8  |
   |       |     8     |            |             |             |
   |-------+-----------+------------+-------------+-------------|
   | 256KB | (4) 32K x | (4) 32K x  | (1) 16K or  | (1) 16K or  |
   |       |     8     |     8      | (1) 32K x 8 | (1) 32K x 8 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |  JP1  |  JP2  |  JP3  | JP4  | JP5  |  JP6  | JP7  |
   |-------+-------+-------+-------+------+------+-------+------|
   | 64KB  | 1 & 2 | 1 & 2 | 1 & 2 | 1 &  | 2 &  | Open  | 1 &  |
   |       |       |       |       |  2   |  3   |       |  2   |
   |-------+-------+-------+-------+------+------+-------+------|
   | 128KB | 2 & 3 | 1 & 2 | 2 & 3 | 1 &  | 1 &  | 1 & 2 | 2 &  |
   |       |       |       |       |  2   |  2   |       |  3   |
   |-------+-------+-------+-------+------+------+-------+------|
   | 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 &  | 2 &  | 2 & 3 | 2 &  |
   |       |       |       |       |  3   |  3   |       |  3   |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |      Type       |      JP13      |      JP14      |  JP15  |
   |-----------------+----------------+----------------+--------|
   |     80486SX     |      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 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 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VL 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  |
   +------------------------------------------------------------+