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

   GRAFIKA 3A

   Processor         80386SX                                      
   Processor Speed   20MHz                                        
   Chip Set          C & T                                        
   Max. Onboard DRAM 5MB                                          
   Cache             None                                         
   BIOS              DTK                                          
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       80387SX                                      

<gopher://bitreich.org/I/th99/m/C-D/33098-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | CPU frequency     |    J1    | Turbo LED        |    J5    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J2    | Reset switch     |    J6    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |    J3    | External battery |    J7    |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J4    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | BIOS type select 27256           |   W7   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | BIOS type select 27128           |   W7   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Pipeline mode enabled            |   W8   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Pipeline mode disabled           |   W8   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU disabled                     |   W9   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU enabled                      |   W9   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Power good signal detect from    |  W11   | pins 2 & 3 |
   |   | power supply                     |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Power good signal detect from    |  W11   | pins 1 & 2 |
   |   | board                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select monochrome   |  W12   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select color        |  W12   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Battery type select external     |  W13   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery type select internal     |  W13   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  | Bank 0 |  P 0   | Bank 1 |  P 1   | Bank  | Bank  |
   |        |        |        |        |        |   2   |   3   |
   |--------+--------+--------+--------+--------+-------+-------|
   | 512KB  |  (4)   |  (2)   |  NONE  |  NONE  | NONE  | NONE  |
   |        | 44256  | 41256  |        |        |       |       |
   |--------+--------+--------+--------+--------+-------+-------|
   | 640KB  |  (4)   |  (2)   |  (4)   |  (2)   | NONE  | NONE  |
   |        | 44256  | 41256  |  4164  | 41256  |       |       |
   |--------+--------+--------+--------+--------+-------+-------|
   |  1MB   |  (4)   |  (2)   |  (4)   |  (2)   | NONE  | NONE  |
   |        | 44256  | 41256  | 44256  | 41256  |       |       |
   |--------+--------+--------+--------+--------+-------+-------|
   | 1.5MB  |  (4)   |  (2)   |  (4)   |  (2)   |  (2)  | NONE  |
   |        | 44256  | 41256  | 44256  | 41256  | 256K  |       |
   |        |        |        |        |        |  x 9  |       |
   |--------+--------+--------+--------+--------+-------+-------|
   |  2MB   |  (4)   |  (2)   |  (4)   |  (2)   |  (2)  |  (2)  |
   |  (A)   | 44256  | 41256  | 44256  | 41256  | 256K  | 256K  |
   |        |        |        |        |        |  x 9  |  x 9  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  2MB   |  NONE  |  NONE  |  NONE  |  NONE  |  (2)  | NONE  |
   |  (B)   |        |        |        |        | 1M x  |       |
   |        |        |        |        |        |   9   |       |
   |--------+--------+--------+--------+--------+-------+-------|
   |  3MB   |  (4)   |  (2)   |  (4)   |  (2)   |  (2)  | NONE  |
   |        | 44256  | 41256  | 44256  | 41256  | 1M x  |       |
   |        |        |        |        |        |   9   |       |
   |--------+--------+--------+--------+--------+-------+-------|
   |  4MB   |  NONE  |  NONE  |  NONE  |  NONE  |  (2)  |  (2)  |
   |        |        |        |        |        | 1M x  | 1M x  |
   |        |        |        |        |        |   9   |   9   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  5MB   |  (4)   |  (2)   |  (4)   |  (2)   |  (2)  |  (2)  |
   |        | 44256  | 41256  | 44256  | 41256  | 1M x  | 1M x  |
   |        |        |        |        |        |   9   |   9   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Size   |   W1   |   W2   |   W3   |  W4   |  W5   |  W6   |
   |---------+--------+--------+--------+-------+-------+-------|
   |  512KB  | 1 & 2  | 1 & 2  | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 |
   |---------+--------+--------+--------+-------+-------+-------|
   |  640KB  | 1 & 2  | 1 & 2  | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 |
   |---------+--------+--------+--------+-------+-------+-------|
   |   1MB   | 1 & 2  | 1 & 2  | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 |
   |---------+--------+--------+--------+-------+-------+-------|
   |  1.5MB  | 2 & 3  | 2 & 3  | 2 & 3  | 2 & 3 | 2 & 3 | 2 & 3 |
   |---------+--------+--------+--------+-------+-------+-------|
   | 2MB (A) | 2 & 3  | 2 & 3  | 2 & 3  | 2 & 3 | 2 & 3 | 2 & 3 |
   |---------+--------+--------+--------+-------+-------+-------|
   | 2MB (B) | 1 & 2  | 1 & 2  | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 |
   |---------+--------+--------+--------+-------+-------+-------|
   |   3MB   | 2 & 3  | 2 & 3  | 2 & 3  | 2 & 3 | 2 & 3 | 2 & 3 |
   |---------+--------+--------+--------+-------+-------+-------|
   |   4MB   | 1 & 2  | 1 & 2  | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 |
   |---------+--------+--------+--------+-------+-------+-------|
   |   5MB   | 2 & 3  | 2 & 3  | 2 & 3  | 2 & 3 | 2 & 3 | 2 & 3 |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+