(TXT) View Source
       
       # DTK COMPUTER, INC.
       
          PEM-2500
       
          Processor          80386DX                                     
          Processor Speed    25MHz                                       
          Chip Set           VLSI                                        
          Max. Onboard DRAM  16MB (8MB on external memory card)          
          Cache              64/256KB                                    
          BIOS               AMI/Award/DTK/Phoenix                       
          Dimensions         351mm x 306mm                               
          I/O Options        32-bit external memory card slot            
          NPU Options        80387/3167                                  
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       | Location | Purpose              | Location |
          |---------------+----------+----------------------+----------|
          | Power LED &   |    J1    | Turbo LED            |    J4    |
          | keylock       |          |                      |          |
          |---------------+----------+----------------------+----------|
          | Reset switch  |    J2    | Turbo switch         |    J5    |
          |---------------+----------+----------------------+----------|
          | Speaker       |    J3    | 32-bit external      |   S15    |
          |               |          | memory card          |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Expansion bus (8-bit)     |      W11      | pins 1 & 2 |
          |   | speed select 7 wait       |               |   closed   |
          |   | states                    |               |            |
          |---+---------------------------+---------------+------------|
          |   | Expansion bus (8-bit)     |      W11      | pins 2 & 3 |
          |   | speed select 5 wait       |               |   closed   |
          |   | states                    |               |            |
          |---+---------------------------+---------------+------------|
          | » | Expansion bus (16-bit)    |      W12      | pins 1 & 2 |
          |   | speed select 3 wait       |               |   closed   |
          |   | states                    |               |            |
          |---+---------------------------+---------------+------------|
          |   | Expansion bus (16-bit)    |      W12      | pins 2 & 3 |
          |   | speed select 1 wait       |               |   closed   |
          |   | states                    |               |            |
          |---+---------------------------+---------------+------------|
          | » | DMA & I/O speed select    |      W13      | pins 1 & 2 |
          |   | 6/12MHz respectively      |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | DMA & I/O speed select    |      W13      | pins 2 & 3 |
          |   | 3/6MHz respectively       |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | NPU disabled              |      W14      |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | NPU enabled               |      W14      |    Open    |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select       |     SW1/6     |    Off     |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select color |     SW1/6     |     On     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size | Bank 0  |   P-0   | Bank 1 |  P-1   | Bank 2 | Bank |
          |      |         |         |        |        |        |  3   |
          |------+---------+---------+--------+--------+--------+------|
          | 1MB  |   (8)   |   (4)   |  NONE  |  NONE  |  NONE  | NONE |
          |      |  44256  |  41256  |        |        |        |      |
          |------+---------+---------+--------+--------+--------+------|
          | 1MB  |  NONE   |  NONE   |  NONE  |  NONE  |  NONE  | (4)  |
          |      |         |         |        |        |        | 256K |
          |      |         |         |        |        |        | x 9  |
          |------+---------+---------+--------+--------+--------+------|
          | 2MB  |   (8)   |   (4)   |  (8)   |  (4)   |  NONE  | NONE |
          |      |  44256  |  41256  | 44256  | 41256  |        |      |
          |------+---------+---------+--------+--------+--------+------|
          | 2MB  |   (8)   |   (4)   |  NONE  |  NONE  |  NONE  | (4)  |
          |      |  44256  |  41256  |        |        |        | 256K |
          |      |         |         |        |        |        | x 9  |
          |------+---------+---------+--------+--------+--------+------|
          | 2MB  |  NONE   |  NONE   |  (8)   |  (4)   |  NONE  | (4)  |
          |      |         |         | 44256  | 41256  |        | 256K |
          |      |         |         |        |        |        | x 9  |
          |------+---------+---------+--------+--------+--------+------|
          | 4MB  |   (8)   |   (4)   |  (8)   |  (4)   |  (12)  | NONE |
          |      | 411000  | 411000  | 411000 | 411000 | 411000 |      |
          |------+---------+---------+--------+--------+--------+------|
          | 4MB  |  NONE   |  NONE   |  NONE  |  NONE  |  NONE  | (4)  |
          |      |         |         |        |        |        | 1M x |
          |      |         |         |        |        |        |  9   |
          |------+---------+---------+--------+--------+--------+------|
          | 5MB  |   (8)   |   (4)   |  NONE  |  NONE  |  NONE  | (4)  |
          |      |  44256  |  41256  |        |        |        | 1M x |
          |      |         |         |        |        |        |  9   |
          |------+---------+---------+--------+--------+--------+------|
          | 8MB  |   (8)   |   (4)   |  (8)   |  (4)   |  (12)  | (4)  |
          |      | 411000  | 411000  | 411000 | 411000 | 411000 | 1M x |
          |      |         |         |        |        |        |  9   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          | Size |  W1  |  W2  |  W3  |  W4  |  W5  |  W6  | W7  | W8  |
          |------+------+------+------+------+------+------+-----+-----|
          | 1MB  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 & | 2 & |
          |      |  3   |  3   |  3   |  3   |  3   |  3   |  3  |  3  |
          |------+------+------+------+------+------+------+-----+-----|
          | 1MB  | 1 &  | 1 &  | 1 &  | 1 &  | 1 &  | 1 &  | 2 & | 2 & |
          |      |  2   |  2   |  2   |  2   |  2   |  2   |  3  |  3  |
          |------+------+------+------+------+------+------+-----+-----|
          | 2MB  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 & | 2 & |
          |      |  3   |  3   |  3   |  3   |  3   |  3   |  3  |  3  |
          |------+------+------+------+------+------+------+-----+-----|
          | 4MB  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 1 & | 1 & |
          |      |  3   |  3   |  3   |  3   |  3   |  3   |  2  |  2  |
          |------+------+------+------+------+------+------+-----+-----|
          | 4MB  | 1 &  | 1 &  | 1 &  | 1 &  | 1 &  | 1 &  | 1 & | 1 & |
          |      |  2   |  2   |  2   |  2   |  2   |  2   |  2  |  2  |
          |------+------+------+------+------+------+------+-----+-----|
          | 5MB  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 & | 1 & |
          |      |  3   |  3   |  3   |  3   |  3   |  3   |  3  |  2  |
          |------+------+------+------+------+------+------+-----+-----|
          | 8MB  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 2 &  | 1 & | 1 & |
          |      |  3   |  3   |  3   |  3   |  3   |  3   |  2  |  2  |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM SWITCH CONFIGURATION                  |
          |------------------------------------------------------------|
          |  Size   |  SW1/1   |  SW1/2  |  SW1/3  |  SW1/4  |  SW1/5  |
          |---------+----------+---------+---------+---------+---------|
          |   1MB   |    On    |   On    |   On    |   On    |   On    |
          |---------+----------+---------+---------+---------+---------|
          |   1MB   |    On    |   On    |   On    |   On    |   On    |
          |---------+----------+---------+---------+---------+---------|
          |   2MB   |    On    |   On    |   On    |   On    |   On    |
          |---------+----------+---------+---------+---------+---------|
          |   4MB   |    On    |   On    |   Off   |   On    |   Off   |
          |---------+----------+---------+---------+---------+---------|
          |   4MB   |    On    |   On    |   Off   |   On    |   Off   |
          |---------+----------+---------+---------+---------+---------|
          |   5MB   |   Off    |   On    |   On    |   Off   |   On    |
          |---------+----------+---------+---------+---------+---------|
          |   8MB   |   Off    |   On    |   Off   |   Off   |   Off   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |        TAG         |
          |------------------+--------------------+--------------------|
          |       64KB       |    (8) 16K x 4     |    (2) 16K x 4     |
          |------------------+--------------------+--------------------|
          |      256KB       |    (8) 64K x 4     |    (2) 64K x 4     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size       |         W9         |        W10         |
          |------------------+--------------------+--------------------|
          |       64KB       | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |      256KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+