
PEAKTRON COMPUTER, INC.

PA 286-16/20/25 & PA 386SX-16/20

Processor         80286/80386SX
Processor Speed   16/20/25MHz
Chip Set          Peaktron
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        330mm x 220mm
I/O Options       None
NPU Options       80287/80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                J1       Speaker                     J4

  Turbo switch                J2       Power LED & keylock         J5

  Turbo LED                   J3       External battery            JP1

                        USER CONFIGURABLE SETTINGS

              Function                   Jumper/Switch        Position

     CPU speed select switchable             J6                open
      at turbo switch

      CPU speed select switchable             J6             1 & 2 or 2 &
      at keyboard                                                 3

     Monitor type select                     J7                open
      monochrome

      Monitor type select color               J7               closed

     NPU mode select synchronous             J11             pins 2 & 3
      with CPU                                                 closed

      NPU mode select asynchronous            J11             pins 1 & 2
      with CPU                                                 closed

     Bus speed select ATCLK/2               SW1/1              Open

      Bus speed select ATCLK/3               SW1/1             Closed

     Parity check enabled                   SW1/2             Closed

      Parity check disabled                  SW1/2              Open

     DRAM select 0 wait states              SW1/3             Closed

      DRAM select 1 wait state               SW1/3              Open

     Shadow BIOS ROM disabled               SW1/4             Closed

      Shadow BIOS ROM enabled                SW1/4              Open

                            DRAM CONFIGURATION

  Size     Bank 0       P-0       Bank 1       P-1       Bank 2   Bank 3

  512KB      (4)         (2)       NONE        NONE      NONE      NONE
            44256      41256

  512KB     NONE        NONE       NONE        NONE       (2)      NONE
                                                         256K x
                                                           9

   1MB       (4)         (2)        (4)         (2)      NONE      NONE
            44256      41256       44256      41256

   1MB      NONE        NONE       NONE        NONE       (2)       (2)
                                                         256K x    256K x
                                                           9         9

  1.5MB      (4)         (2)        (4)         (2)       (2)      NONE
            44256      41256       44256      41256      256K x
                                                           9

   2MB       (4)         (2)       NONE        NONE      NONE      NONE
           441000      411000

   2MB      NONE        NONE       NONE        NONE      (2) 1M    NONE
                                                          x 9

   3MB       (4)         (2)        (4)         (2)      (2) 1M    NONE
            44256      41256       44256      41256       x 9

   4MB       (4)         (2)        (4)         (2)      NONE      NONE
           441000      411000     441000      411000

   4MB      NONE        NONE       NONE        NONE      (2) 1M    (2) 1M
                                                          x 9       x 9

   6MB       (4)         (2)        (4)         (2)      (2) 1M    NONE
           441000      411000     441000      411000      x 9

   8MB      NONE        NONE       NONE        NONE      (2) 4M    NONE
                                                          x 9

  16MB      NONE        NONE       NONE        NONE      (2) 4M    (2) 4M
                                                          x 9       x 9

                         DRAM JUMPER CONFIGURATION

  Size     SW1/5      SW1/6     SW1/7     SW1/8        J8          J9

  512KB     Open     Closed     Open       Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

  512KB     Open     Closed     Open       Open     pins 1 &    pins 2 &
                                                    2 closed    3 closed

   1MB      Open     Closed     Open      Closed    pins 2 &    pins 1 &
                                                    3 closed    2 closed

   1MB      Open     Closed     Open      Closed    pins 1 &    pins 2 &
                                                    2 closed    3 closed

  1.5MB     Open      Open     Closed      Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

   2MB     Closed     Open      Open       Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

   2MB     Closed     Open      Open       Open     pins 1 &    pins 2 &
                                                    2 closed    3 closed

   3MB      Open     Closed    Closed      Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

   4MB     Closed     Open      Open      Closed    pins 2 &    pins 1 &
                                                    3 closed    2 closed

   4MB     Closed     Open      Open      Closed    pins 1 &    pins 2 &
                                                    2 closed    3 closed

   6MB     Closed     Open     Closed      Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

   8MB     Closed    Closed     Open       Open     pins 2 &    pins 1 &
                                                    3 closed    2 closed

  16MB     Closed    Closed     Open      Closed    pins 1 &    pins 2 &
                                                    2 closed    3 closed

                      BIOS CONFIGURATION

        Type                 J10                  J12

        27256          pins 1 & 2 closed   pins 2 & 3 closed

        27512                Open                Closed

