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

   PX-3000 TURBO XT

   Processor             8088                                     
   Processor Speed       12MHz                                    
   Chip Set              Peaktron                                 
   Max. Onboard DRAM     640KB                                    
   Cache                 None                                     
   BIOS                  Peaktron                                 
   Dimensions            218mm x 187mm                            
   I/O Options           None                                     
   NPU Options           8087                                     

<gopher://bitreich.org/I/th99/m/P-R/30309-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Reset switch      |    J1    | Turbo switch     |   J14    |
   |-------------------+----------+------------------+----------|
   | Keylock           |    J2    | Turbo LED        |   J15    |
   |-------------------+----------+------------------+----------|
   | Speaker           |   J13    | Power LED        |   J16    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Parity check enabled      |      P1       |    Open    |
   |---+---------------------------+---------------+------------|
   |   | Parity check disabled     |      P1       |   Closed   |
   |---+---------------------------+---------------+------------|
   |>> | CPU speed select          |      P2       | pins 1 & 2 |
   |   | switchable at turbo turbo |               |   closed   |
   |   | switch                    |               |            |
   |---+---------------------------+---------------+------------|
   |   | CPU speed select          |      P2       | pins 2 & 3 |
   |   | switchable at keyboard    |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/1     |    N/A     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/2     |    N/A     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/3     |    N/A     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/4     |    N/A     |
   |   | not alter                 |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | U28 - U29 | U15 - U18 |  U19 -   | U28 - 31 | U34  |
   |       |           |           |   U22    |          |      |
   |-------+-----------+-----------+----------+----------+------|
   | 256KB | (2) 44256 |   NONE    |   NONE   |   NONE   | NONE |
   |-------+-----------+-----------+----------+----------+------|
   | 256KB |   NONE    | (4) 41256 |   (4)    |   NONE   | NONE |
   |       |           |           |  41256   |          |      |
   |-------+-----------+-----------+----------+----------+------|
   | 512KB |   NONE    |   NONE    |   NONE   |   (4)    | NONE |
   |       |           |           |          |  44256   |      |
   |-------+-----------+-----------+----------+----------+------|
   | 640KB |   NONE    |   NONE    |   NONE   |   (4)    | NONE |
   |       |           |           |          |  44256   |      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM PARITY CONFIGURATION                  |
   |------------------------------------------------------------|
   |    Size     |       U23       |      U43       |    U48    |
   |-------------+-----------------+----------------+-----------|
   |    256KB    |    (1) 41256    |      NONE      |   NONE    |
   |-------------+-----------------+----------------+-----------|
   |    256KB    |    (1) 41256    |      NONE      |   NONE    |
   |-------------+-----------------+----------------+-----------|
   |    512KB    |    (1) 41256    |   (1) 41256    |   NONE    |
   |-------------+-----------------+----------------+-----------|
   |    640KB    |    (1) 41256    |   (1) 41256    |   NONE    |
   |------------------------------------------------------------|
   | Note:One (1) 411000 can be used in location U23 for parity |
   | with all memory sizes.                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              DRAM PARITY JUMPER CONFIGURATION              |
   |------------------------------------------------------------|
   |       Size       |         P3         |         P4         |
   |------------------+--------------------+--------------------|
   |      256KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      256KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      512KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      640KB       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    VIDEO CONFIGURATION                     |
   |------------------------------------------------------------|
   |        Size        |       SW1/5       |       SW1/6       |
   |--------------------+-------------------+-------------------|
   |        None        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |  Color (40 x 20)   |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |  Color (80 x 25)   |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |     Monochrome     |        Off        |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Drives installed  |       SW1/7       |       SW1/8       |
   |--------------------+-------------------+-------------------|
   |         1          |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |         2          |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |         3          |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |         4          |        Off        |        Off        |
   +------------------------------------------------------------+