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

   PPM-1661D(S)/PPM-2061D(S)/PPM-2561D(S)

   Processor        80386SX                                       
   Processor Speed  16/20/25MHz                                   
   Chip Set         DTK                                           
   Video Chip Set   None                                          
   Maximum Onboard  8MB                                           
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            None                                          
   BIOS             AMI/DTK                                       
   Dimensions       333mm x 222mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, PS/2 mouse port, serial ports  
                    (2), game interface                           
   NPU Options      80387SX                                       

<gopher://bitreich.org/I/th99/m/C-D/33346-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Serial port      |   CN1    | Reset switch      |    J6    |
   |------------------+----------+-------------------+----------|
   | Serial port      |   CN2    | External battery  |    J7    |
   |------------------+----------+-------------------+----------|
   | Parallel port    |   CN3    | Game interface    |   J13    |
   |------------------+----------+-------------------+----------|
   | PS/2 mouse port  |   CN4    | IDE interface LED |   J15    |
   |------------------+----------+-------------------+----------|
   | Power LED &      |    J1    | IDE interface     |   J16    |
   | keylock          |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |    J3    | Floppy drive      |   J17    |
   |                  |          | interface         |          |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |    J5    | Riser slot        |   SL1    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Label   |  Position  |
   |------------------------------------+----------+------------|
   |>> | NPU not installed              |    J8    |   Closed   |
   |---+--------------------------------+----------+------------|
   |   | NPU installed                  |    J8    |    Open    |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface enabled | J19 pins |   Closed   |
   |   |                                |  3 & 4   |            |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface         | J19 pins |    Open    |
   |   | disabled                       |  3 & 4   |            |
   |---+--------------------------------+----------+------------|
   |>> | IDE interface disabled         | J19 pins |    Open    |
   |   |                                | 13 & 14  |            |
   |---+--------------------------------+----------+------------|
   |   | IDE interface enabled          | J19 pins |   Closed   |
   |   |                                | 13 & 14  |            |
   |---+--------------------------------+----------+------------|
   |   | Game port enabled              | J19 pins |   Closed   |
   |   |                                | 15 & 16  |            |
   |---+--------------------------------+----------+------------|
   |   | Game port disabled             | J19 pins |    Open    |
   |   |                                | 15 & 16  |            |
   |---+--------------------------------+----------+------------|
   |>> | BIOS type select 27256         |    W7    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | BIOS type select 27128         |    W7    | Pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | NPU clock input select 387CLK  |   W10    |    Open    |
   |   | = 386CLK                       |          |            |
   |---+--------------------------------+----------+------------|
   |   | NPU clock input select 387CLK  |   W10    |   Closed   |
   |   | = 386CLK/3                     |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Battery type select external   |   W11    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Battery type select internal   |   W11    | Pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Monitor type select monochrome |   W12    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Monitor type select color      |   W12    | Pins 2 & 3 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   | 512KB | (2) 256K x  |    None    |    None    |    None    |
   |       |      9      |            |            |            |
   |-------+-------------+------------+------------+------------|
   |  1MB  | (2) 256K x  | (2) 256K x |    None    |    None    |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   | 1.5MB | (2) 256K x  | (2) 256K x | (2) 256K x |    None    |
   |       |      9      |     9      |     9      |            |
   |-------+-------------+------------+------------+------------|
   |  2MB  | (2) 256K x  | (2) 256K x | (2) 256K x | (2) 256K x |
   |       |      9      |     9      |     9      |     9      |
   |-------+-------------+------------+------------+------------|
   |  2MB  | (2) 1M x 9  |    None    |    None    |    None    |
   |-------+-------------+------------+------------+------------|
   |  3MB  | (2) 256K x  | (2) 256K x | (2) 1M x 9 |    None    |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   |  4MB  | (2) 1M x 9  | (2) 1M x 9 |    None    |    None    |
   |-------+-------------+------------+------------+------------|
   |  5MB  | (2) 256K x  | (2) 256K x | (2) 1M x 9 | (2) 1M x 9 |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   |  6MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 |    None    |
   |-------+-------------+------------+------------+------------|
   |  8MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            PARALLEL PORT ADDRESS/IRQ SELECTION             |
   |------------------------------------------------------------|
   |     Setting     |  IRQ   | J19 pins 5 & 6 | J19 pins 7 & 8 |
   |-----------------+--------+----------------+----------------|
   |>> |    LPT1     |  IRQ7  |      Open      |     Closed     |
   |---+-------------+--------+----------------+----------------|
   |   |    LPT2     |  IRQ5  |     Closed     |      Open      |
   |---+-------------+--------+----------------+----------------|
   |   |  Disabled   |  None  |      Open      |      Open      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   SERIAL PORT SELECTION                    |
   |------------------------------------------------------------|
   |  Port 1  | Port 2 |  IRQ3   |  IRQ4   | J19  | J19  | J19  |
   |          |        |         |         | pins | pins | pins |
   |          |        |         |         | 1&2  | 9&10 |11&12 |
   |----------+--------+---------+---------+------+------+------|
   |>>|  COM1  |  COM2  |  COM2   |  COM1   |Closed|Closed|Closed|
   |-+--------+--------+---------+---------+------+------+------|
   | |  COM3  |  COM4  |  COM4   |  COM3   | Open |Closed|Closed|
   |-+--------+--------+---------+---------+------+------+------|
   | |  COM1  |Disabled|Available|  COM1   |Closed|Closed| Open |
   |-+--------+--------+---------+---------+------+------+------|
   | |Disabled|  COM2  |  COM2   |Available|Closed| Open |Closed|
   |-+--------+--------+---------+---------+------+------+------|
   | |  COM3  |Disabled|Available|  COM3   | Open |Closed| Open |
   |-+--------+--------+---------+---------+------+------+------|
   | |Disabled|  COM4  |  COM4   |Available| Open | Open |Closed|
   +------------------------------------------------------------+