(TXT) View Source
       
       # DTK COMPUTER, INC.
       
          PEM-2561D (S)
       
          Processor    80386DX                                           
          Processor    25MHz                                             
          Speed        
          Chip Set     DTK/SIS                                           
          Max. Onboard 16MB                                              
          DRAM         
          Cache        None                                              
          BIOS         DTK                                               
          Dimensions   330mm x 218mm                                     
          I/O Options  Parallel port, serial ports (2), floppy drive     
                       interface, IDE interface                          
          NPU Options  80387/3167                                        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Power LED &       |    J1    | Floppy drive     |    J7    |
          | keylock           |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | IDE interface LED |    J2    | Serial port 1    |    J9    |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |    J4    | Serial port 2    |    J8    |
          |-------------------+----------+------------------+----------|
          | Reset switch      |    J5    | Parallel port    |   J10    |
          |-------------------+----------+------------------+----------|
          | IDE interface     |    J6    | Riser card       |   RC1    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | CPU speed select fast     |      J3       |    Open    |
          |---+---------------------------+---------------+------------|
          |   | CPU speed select slow     |      J3       | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | CPU speed switchable from |      J3       | pins 2 & 3 |
          |   | keyboard                  |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Bus speed select fast     |     SW1/7     |    Off     |
          |---+---------------------------+---------------+------------|
          |   | Bus speed select slow     |     SW1/7     |     On     |
          |---+---------------------------+---------------+------------|
          | » | DRAM page                 |     SW1/8     |     On     |
          |   | mode/page-interleave      |               |            |
          |   | select auto               |               |            |
          |---+---------------------------+---------------+------------|
          |   | DRAM page                 |     SW1/8     |    Off     |
          |   | mode/page-interleave mode |               |            |
          |   | select page               |               |            |
          |---+---------------------------+---------------+------------|
          | » | Parallel port interrupt   |      W1       | pins 1 & 2 |
          |   | select IRQ7               |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Parallel port interrupt   |      W1       | pins 2 & 3 |
          |   | select IRQ5               |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | NPU disabled              |      W2       | pins 1 & 2 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | NPU enabled               |      W2       | pins 2 & 3 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Serial port 1 interrupt   |      W3       | pins 2 & 3 |
          |   | select IRQ4               |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Serial port 1 interrupt   |      W3       | pins 1 & 2 |
          |   | select IRQ3               |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Serial port 2 interrupt   |      W4       | pins 1 & 2 |
          |   | select IRQ3               |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Serial port 2 interrupt   |      W4       | pins 2 & 3 |
          |   | select IRQ4               |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | Floppy drive interface    |      W5       |   Closed   |
          |   | enabled                   |               |            |
          |---+---------------------------+---------------+------------|
          |   | Floppy drive interface    |      W5       |    Open    |
          |   | disabled                  |               |            |
          |---+---------------------------+---------------+------------|
          | » | IDE interface disabled    |      W12      |    Open    |
          |---+---------------------------+---------------+------------|
          |   | IDE interface enabled     |      W12      |   Closed   |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select       |      W13      | pins 1 & 2 |
          |   | monochrome                |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select color |      W13      | pins 2 & 3 |
          |   |                           |               |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (1) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |     36      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (1) 256K x  | (1) 256K x  |    NONE    |    NONE    |
          |      |     36      |     36      |            |            |
          |------+-------------+-------------+------------+------------|
          | 3MB  | (1) 256K x  | (1) 256K x  | (1) 256K x |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 256K x  | (1) 256K x  | (1) 256K x | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 5MB  | (1) 1M x 36 | (1) 256K x  |    NONE    |    NONE    |
          |      |             |     36      |            |            |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (1) 256K x  | (1) 256K x  |  (1) 1M x  |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 7MB  | (1) 256K x  | (1) 256K x  |  (1) 1M x  | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 9MB  | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 13MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM SWITCH CONFIGURATION                  |
          |------------------------------------------------------------|
          |   Size    |   SW1/1    |   SW1/2   |   SW1/3   |   SW1/4   |
          |-----------+------------+-----------+-----------+-----------|
          |    1MB    |    Off     |    On     |    On     |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    2MB    |     On     |    Off    |    On     |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    3MB    |    Off     |    Off    |    On     |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    4MB    |     On     |    On     |    Off    |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    4MB    |    Off     |    Off    |    Off    |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |    5MB    |    Off     |    On     |    Off    |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    6MB    |     On     |    Off    |    Off    |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    7MB    |    Off     |    Off    |    Off    |    On     |
          |-----------+------------+-----------+-----------+-----------|
          |    8MB    |     On     |    On     |    On     |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |    9MB    |    Off     |    On     |    On     |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |   10MB    |     On     |    Off    |    On     |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |   12MB    |     On     |    On     |    Off    |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |   13MB    |    Off     |    On     |    Off    |    Off    |
          |-----------+------------+-----------+-----------+-----------|
          |   16MB    |     On     |    On     |    On     |    On     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               DRAM WAIT STATE CONFIGURATION                |
          |------------------------------------------------------------|
          |  Wait state   |  Read state   |    SW1/5     |    SW1/6    |
          |---------------+---------------+--------------+-------------|
          |       1       |       2       |      On      |     Off     |
          |---------------+---------------+--------------+-------------|
          |       1       |       3       |     Off      |     On      |
          |---------------+---------------+--------------+-------------|
          |       2       |       3       |      On      |     On      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PARALLEL PORT CONFIGURATION                 |
          |------------------------------------------------------------|
          |      Setting       |        W6         |        W7         |
          |--------------------+-------------------+-------------------|
          |        LPT1        |      Closed       |      Closed       |
          |--------------------+-------------------+-------------------|
          |        LPT2        |       Open        |       Open        |
          |--------------------+-------------------+-------------------|
          |      Disabled      |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |      Disabled      |      Closed       |       Open        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 1 CONFIGURATION                 |
          |------------------------------------------------------------|
          |      Setting       |        W6         |        W7         |
          |--------------------+-------------------+-------------------|
          |        COM1        |      Closed       |      Closed       |
          |--------------------+-------------------+-------------------|
          |        COM3        |       Open        |       Open        |
          |--------------------+-------------------+-------------------|
          |      Disabled      |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |      Disabled      |      Closed       |       Open        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 2 CONFIGURATION                 |
          |------------------------------------------------------------|
          |      Setting       |        W6         |        W7         |
          |--------------------+-------------------+-------------------|
          |        COM2        |      Closed       |      Closed       |
          |--------------------+-------------------+-------------------|
          |        COM4        |       Open        |       Open        |
          |--------------------+-------------------+-------------------|
          |      Disabled      |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |      Disabled      |      Closed       |       Open        |
          +------------------------------------------------------------+