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                                  

<gopher://bitreich.org/I/th99/m/C-D/30506-1.png>
   

   +------------------------------------------------------------+
   |                        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  |
   +------------------------------------------------------------+