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

   PKM-0037Y (VER. 1.01)

   Processor         80486SX/80487SX80486DX/ODP486SX/80486DX2     
   Processor Speed   20/25/33/50 (Internal)/50/66 (Internal)MHz   
   Chip Set          Symphony                                     
   Max. onboard DRAM 32MB                                         
   Cache             64/128/256KB                                 
   BIOS              AMI/DTK                                      
   Dimensions        229mm x 221mm                                
   I/O Options       None                                         
   NPU Options       None                                         

<gopher://bitreich.org/I/th99/m/C-D/31618-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |    J1    | Reset switch   |    J4    |
   |---------------------+----------+----------------+----------|
   | Speaker             |    J2    | Turbo LED      |    J5    |
   |---------------------+----------+----------------+----------|
   | Turbo LED           |    J3    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Monitor type select       |      J8       | pins 1 & 2 |
   |   | monochrome                |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color |      J8       | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Cache write wait state    |      J9       |   Closed   |
   |   | select 0 wait states      |               |            |
   |---+---------------------------+---------------+------------|
   |   | Cache write wait state    |      J9       |    Open    |
   |   | select 1 wait state       |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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        |
   |------------------+--------------------+--------------------|
   |       17MB       |    (4) 256K 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      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  | J14  | J15  | J16  | J17  | J18  | J19 | J20 | J21 |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 64KB  | 1 &  | 1 &  | 1 &  | 1 &  | 1 &  | 1 & | 1 & | 1 & |
   |       |  2   |  2   |  2   |  2   |  2   |  2  |  2  |  2  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 128KB | 2 &  | 1 &  | 1 &  | 2 &  | 2 &  | 2 & | 2 & | 2 & |
   |       |  3   |  2   |  2   |  3   |  3   |  3  |  3  |  3  |
   |-------+------+------+------+------+------+-----+-----+-----|
   | 256KB | 2 &  | 2 &  | 2 &  | 1 &  | 1 &  | 1 & | 1 & | 1 & |
   |       |  3   |  3   |  3   |  2   |  2   |  2  |  2  |  2  |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Speed   |   J7    |   J10   |        J12        |   J13   |
   |----------+---------+---------+-------------------+---------|
   |  20MHz   |  Open   |  Open   | pins 1 & 2 closed |  Open   |
   |----------+---------+---------+-------------------+---------|
   |  25Mhz   |  Open   |  Open   | pins 1 & 2 closed |  Open   |
   |----------+---------+---------+-------------------+---------|
   |  33Mhz   |  Open   |  Open   | pins 1 & 2 closed |  Open   |
   |----------+---------+---------+-------------------+---------|
   | 50i MHz  | Closed  |  Open   | pins 1 & 2 closed |  Open   |
   |----------+---------+---------+-------------------+---------|
   |  50MHz   | Closed  | Closed  | pins 2 & 3 closed | Closed  |
   |----------+---------+---------+-------------------+---------|
   | 66i MHz  |  Open   |  Open   | pins 1 & 2 closed |  Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |   J6   |     J11      |    J30     |    J31     |
   |----------+--------+--------------+------------+------------|
   | 80486SX  | Closed |     Open     | pins 2 & 3 |    Open    |
   |   PGA    |        |              |   closed   |            |
   |----------+--------+--------------+------------+------------|
   | 80486SX  |  Open  |     Open     | pins 1 & 2 |    Open    |
   |   PQFP   |        |              |   closed   |            |
   |----------+--------+--------------+------------+------------|
   | 80487SX  | Closed |  pins 2 & 3  | pins 1 & 2 | pins 2 & 3 |
   |   PGA    |        |    closed    |   closed   |   closed   |
   |----------+--------+--------------+------------+------------|
   | 80486DX  | Closed |  pins 1 & 2  | pins 1 & 2 | pins 1 & 2 |
   |   PGA    |        |    closed    |   closed   |   closed   |
   |----------+--------+--------------+------------+------------|
   | ODP486SX | Closed |  pins 1 & 2  | pins 1 & 2 | pins 1 & 2 |
   |   PGA    |        |    closed    |   closed   |   closed   |
   |----------+--------+--------------+------------+------------|
   | 80486DX2 | Closed |  pins 1 & 2  | pins 1 & 2 | pins 1 & 2 |
   |   PGA    |        |    closed    |   closed   |   closed   |
   +------------------------------------------------------------+