PEAKTRON COMPUTER, INC.
=======================

   PA386SX-SMT-16/20/25

   PA286-SMT-12/16/20/25

   Processor             80286/80386SX                            
   Processor Speed       12/16/20/25MHz                           
   Chip Set              Peaktron                                 
   Max. Onboard DRAM     16MB                                     
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            248mm x 218mm                            
   I/O Options           None                                     
   NPU Options           80287/80387                              

<gopher://bitreich.org/I/th99/m/P-R/30313-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Reset switch  |    J1    | Speaker              |    J4    |
   |---------------+----------+----------------------+----------|
   | Turbo switch  |    J2    | Power LED & Keylock  |    J5    |
   |---------------+----------+----------------------+----------|
   | Turbo LED     |    J3    | External battery     |   JP1    |
   |------------------------------------------------------------|
   | Note:Motherboard is supplied with either an 80386SX &      |
   | 80387SX socket or an 80286 & 80287 socket.                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Monitor type select       |      J7       |    open    |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color |      J7       |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | NPU mode select           |      J11      | pins 2 & 3 |
   |   | synchronous with OSC1     |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | NPU mode select           |      J11      | pins 1 & 2 |
   |   | synchronous with          |               |   closed   |
   |   | oscillator at U49         |               |            |
   |---+---------------------------+---------------+------------|
   |   | Bus speed select ATCLK/2  |     SW1/1     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | Bus speed select ATCLK/3  |     SW1/1     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Parity check enabled      |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Parity check disabled     |     SW1/2     |    Off     |
   |---+---------------------------+---------------+------------|
   |>> | Shadow ram disabled       |     SW1/4     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Shadow ram enabled        |     SW1/4     |    Off     |
   |------------------------------------------------------------|
   | Note:Socket at U49 may not be available on all boards.     |
   |                                                            |
   | If 8 bit SIMM/SIPPs are used, SW1/switch 2 must be open,   |
   | otherwise it must be closed.                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Bank 0  | Bank 1  | Bank  | Bank | P - 0  | P - 1  |
   |       |         |         |   2   |  3   |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   | 512KB |   (4)   |  NONE   | NONE  | NONE |  (2)   |  NONE  |
   |       |  44256  |         |       |      | 41256  |        |
   |-------+---------+---------+-------+------+--------+--------|
   | 512KB |  NONE   |  NONE   |  (2)  | NONE |  NONE  |  NONE  |
   |       |         |         | 256K  |      |        |        |
   |       |         |         |  x 9  |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  1MB  |   (4)   |   (4)   | NONE  | NONE |  (2)   |  (2)   |
   |       |  44256  |  44256  |       |      | 41256  | 41256  |
   |-------+---------+---------+-------+------+--------+--------|
   |  1MB  |  NONE   |  NONE   |  (2)  | (2)  |  NONE  |  NONE  |
   |       |         |         | 256K  | 256K |        |        |
   |       |         |         |  x 9  | x 9  |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   | 1.5MB |   (4)   |   (4)   |  (2)  | NONE |  NONE  |  NONE  |
   |       |  44256  |  44256  | 256K  |      |        |        |
   |       |         |         |  x 9  |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  2MB  |   (4)   |  NONE   | NONE  | NONE |  (2)   |  NONE  |
   |       | 441000  |         |       |      | 411000 |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  2MB  |  NONE   |  NONE   |  (2)  | NONE |  NONE  |  NONE  |
   |       |         |         | 1M x  |      |        |        |
   |       |         |         |   9   |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  3MB  |   (4)   |   (4)   |  (2)  | NONE |  NONE  |  NONE  |
   |       |  44256  |  44256  | 1M x  |      |        |        |
   |       |         |         |   9   |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  4MB  |   (4)   |   (4)   | NONE  | NONE |  (2)   |  (2)   |
   |       | 441000  | 441000  |       |      | 411000 | 411000 |
   |-------+---------+---------+-------+------+--------+--------|
   |  4MB  |  NONE   |  NONE   |  (2)  | (2)  |  NONE  |  NONE  |
   |       |         |         | 1M x  | 1M x |        |        |
   |       |         |         |   9   |  9   |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  5MB  |   (4)   |   (4)   |  (2)  | (2)  |  NONE  |  NONE  |
   |       |  44256  |  44256  | 1M x  | 1M x |        |        |
   |       |         |         |   9   |  9   |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  6MB  |   (4)   |   (4)   |  (2)  | NONE |  NONE  |  NONE  |
   |       | 441000  | 441000  | 1M x  |      |        |        |
   |       |         |         |   9   |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   |  8MB  |  NONE   |  NONE   |  (2)  | NONE |  NONE  |  NONE  |
   |       |         |         | 4M x  |      |        |        |
   |       |         |         |   9   |      |        |        |
   |-------+---------+---------+-------+------+--------+--------|
   | 16MB  |  NONE   |  NONE   |  (2)  | (2)  |  NONE  |  NONE  |
   |       |         |         | 4M x  | 4M x |        |        |
   |       |         |         |   9   |  9   |        |        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              DRAM JUMPER/SWITCH CONFIGURATION              |
   |------------------------------------------------------------|
   |  Size  |   J8   |   J9   | SW1/5  | SW1/6  | SW1/7 | SW1/8 |
   |--------+--------+--------+--------+--------+-------+-------|
   | 512KB  | 2 & 3  | 1 & 2  |  Off   |   On   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   | 512KB  | 1 & 2  | 2 & 3  |  Off   |   On   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  1MB   | 2 & 3  | 1 & 2  |  Off   |   On   |  Off  |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  1MB   | 1 & 2  | 2 & 3  |  Off   |   On   |  Off  |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   | 1.5MB  | 2 & 3  | 1 & 2  |  Off   |  Off   |  On   |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  2MB   | 2 & 3  | 1 & 2  |   On   |  Off   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  2MB   | 1 & 2  | 2 & 3  |   On   |  Off   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  3MB   | 2 & 3  | 1 & 2  |  Off   |   On   |  On   |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  4MB   | 2 & 3  | 1 & 2  |   On   |  Off   |  Off  |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  4MB   | 1 & 2  | 2 & 3  |   On   |  Off   |  Off  |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  5MB   | 2 & 3  | 1 & 2  |  Off   |   On   |  On   |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  6MB   | 2 & 3  | 1 & 2  |   On   |  Off   |  On   |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  8MB   | 1 & 2  | 2 & 3  |   On   |   On   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  16MB  | 1 & 2  | 2 & 3  |   On   |   On   |  Off  |  On   |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size        |        J10         |        J12        |
   |-------------------+--------------------+-------------------|
   |       27256       | pins 1 & 2 closed  |       Open        |
   |-------------------+--------------------+-------------------|
   |       27512       | pins 2 & 3 closed  |      Closed       |
   +------------------------------------------------------------+