PC BRAND

386DX/20 & 386DX/25

Processor         80386DX
Processor Speed   20/25MHz
Chip Set          Unidentified
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80287/80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo LED                   J1       External battery            J13

  Power LED & keylock         J2       Reset switch                J15

  Speaker                     J3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not              J5           pins 2 & 3
      alter                                                   closed

  »   Factory configured - do not              J6           pins 1 & 2
      alter                                                   closed

  »   Factory configured - do not             J12              N/A
      alter

  »   CMOS memory normal operation            J14           pins 1 & 2
                                                              closed

      CMOS memory clear                       J14           pins 2 & 3
                                                              closed

  »   Reset switch active at all times        J16           pins 2 & 3
                                                              closed

      Reset switch active only when           J16           pins 1 & 2
      keyboard is locked                                      closed

  »   Monitor type select color               J17           pins 2 & 3
                                                              closed

      Monitor type select monochrome          J17           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

     2MB        (2) 256K x 9   (2) 256K x 9   (2) 256K x 9  (2) 256K x 9

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

     8MB        (2) 1M x 9     (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

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

                             NPU CONFIGURATION

      Type         J4        J7       J8        J9       J10        J11

  80287 <10MHz    2 & 3    2 & 3     2 & 3    2 & 3     1 & 2      2 & 3

  80287 10MHz     2 & 3    2 & 3     1 & 2    1 & 2     1 & 2      2 & 3

     80387        2 & 3    1 & 2     1 & 2    1 & 2     2 & 3      1 & 2

      3167        1 & 2    2 & 3     1 & 2    1 & 2     1 & 2      2 & 3

  Note: Pins designated should be in the closed position.