(TXT) View Source
       
       # DTK COMPUTER, INC.
       
          PKM-5031Y
       
          Processor          80486SX/80487SX/80486DX/ODP486SX/80486DX2   
          Processor Speed    16/20/25/33/50(internal)/50/66(internal)MHz 
          Chip Set           Symphony                                    
          Max. Onboard DRAM  32MB                                        
          Cache              64/256KB                                    
          BIOS               AMI/DTK                                     
          Dimensions         330mm x 218mm                               
          I/O Options        None                                        
          NPU Options        None                                        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Reset switch   |    J1    | Turbo LED           |    J4    |
          |----------------+----------+---------------------+----------|
          | Turbo switch   |    J2    | Power LED & keylock |    J5    |
          |----------------+----------+---------------------+----------|
          | Speaker        |    J3    |                     |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CPU speed select forced high     |   J2   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | CPU speed select switchable at   |   J2   | pins 2 & 3 |
          |   | keyboard                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Cache write select 0 wait states |   J9   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Cache write select 1 wait state  |   J9   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select monochrome   |  J13   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select color        |  J13   | 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     |
          |------------------+--------------------+--------------------|
          |       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       |        TAG         |
          |------------------+--------------------+--------------------|
          |       64KB       |     (8) 8K x 8     |     (1) 8K x 8     |
          |------------------+--------------------+--------------------|
          |      256KB       |    (8) 32K x 8     |    (1) 32K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |       J6        |       J7        |       J8       |
          |-------+-----------------+-----------------+----------------|
          | 64KB  |   pins 1 & 2    |   pins 1 & 2    |   pins 1 & 2   |
          |       |     closed      |     closed      |     closed     |
          |-------+-----------------+-----------------+----------------|
          | 256KB |   pins 2 & 3    |   pins 2 & 3    |   pins 2 & 3   |
          |       |     closed      |     closed      |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |     Type     |    J10     |        J11        |    J12     |
          |--------------+------------+-------------------+------------|
          |   80486SX    |    Open    | pins 2 & 3 closed |    Open    |
          |--------------+------------+-------------------+------------|
          |   80486DX    |   Closed   | pins 1 & 2 closed |   Closed   |
          |--------------+------------+-------------------+------------|
          |   80486DX2   |   Closed   |                   |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |     Speed      |  J14   |  J15   |  J16   |  J17  |  J18   |
          |----------------+--------+--------+--------+-------+--------|
          |     16MHz      | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |----------------+--------+--------+--------+-------+--------|
          |     20MHz      | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |----------------+--------+--------+--------+-------+--------|
          |     25MHz      | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |----------------+--------+--------+--------+-------+--------|
          |     33MHz      | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |----------------+--------+--------+--------+-------+--------|
          |     50iMHz     | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |----------------+--------+--------+--------+-------+--------|
          |  50Mhz (15ns   |  Open  | Closed |  Open  | 2 & 3 | Closed |
          |     cache)     |        |        |        |       |        |
          |----------------+--------+--------+--------+-------+--------|
          |  50Mhz (20ns   | Closed | Closed | Closed | 2 & 3 | Closed |
          |     cache)     |        |        |        |       |        |
          |----------------+--------+--------+--------+-------+--------|
          |     66iMHz     | Closed |  Open  |  Open  | 1 & 2 |  Open  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+