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

   PEM-2501/PEM-4001

   Processor          80386DX                                     
   Processor Speed    25/33/40MHz                                 
   Chip Set           VLSI                                        
   Max. Onboard DRAM  16MB (8MB on external memory card)          
   Cache              64/256KB                                    
   BIOS               AMI/DTK                                     
   Dimensions         351mm x 306mm                               
   I/O Options        32-bit external memory card slot (PEI-306)  
   NPU Options        80387/3167                                  

<gopher://bitreich.org/I/th99/m/C-D/30057-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Power LED &   |    J1    | Speaker              |    J4    |
   | keylock       |          |                      |          |
   |---------------+----------+----------------------+----------|
   | Turbo LED     |    J2    | 32-bit external      |    S1    |
   |               |          | memory card          |          |
   |---------------+----------+----------------------+----------|
   | Reset switch  |    J3    | Turbo switch         |    W6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | NPU disabled              |      W1       |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | NPU enabled               |      W1       |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | CPU speed select fast     |      W6       |    Open    |
   |---+---------------------------+---------------+------------|
   |   | CPU speed select slow     |      W6       | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | CPU speed switchable from |      W6       | pins 2 & 3 |
   |   | keyboard                  |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | BIOS type select 27256    |      W7       | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | BIOS type select 27512    |      W7       | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | DMA speed select 8MHz     |      W8       |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | DMA speed select 6MHz     |      W8       |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select       |     SW1/6     |    Off     |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color |     SW1/6     |     On     |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |Size|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|      W2      |    W3    |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |1MB | On  | On  | On  | On  | On  |  pins 2 & 3  |pins 2 & 3|
   |    |     |     |     |     |     |    closed    |  closed  |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |2MB | On  | On  | On  | On  | On  |  pins 2 & 3  |pins 2 & 3|
   |    |     |     |     |     |     |    closed    |  closed  |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |4MB | On  | On  | Off | On  | Off |  pins 1 & 2  |pins 1 & 2|
   |    |     |     |     |     |     |    closed    |  closed  |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |5MB | Off | On  | Off | Off | On  |  pins 2 & 3  |pins 1 & 2|
   |    |     |     |     |     |     |    closed    |  closed  |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |8MB | Off | On  | Off | Off | Off |  pins 1 & 2  |pins 1 & 2|
   |    |     |     |     |     |     |    closed    |  closed  |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |12MB| Off | Off | On  | N/A | N/A |     N/A      |   N/A    |
   |----+-----+-----+-----+-----+-----+--------------+----------|
   |16MB| Off | Off | Off | N/A | N/A |     N/A      |   N/A    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    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       |         W4         |         W5         |
   |------------------+--------------------+--------------------|
   |       64KB       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      256KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+