JPN CORPORATION

MB386DX-33/40

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          Forex
Max. Onboard DRAM 32MB
Cache             32/64/128KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  External battery         JP2         Speaker                  JP10

  Turbo LED                JP7         Turbo switch             JP11

  Reset switch             JP8         32-bit external           S1
                                       memory card

  Power LED &              JP9
  keylock

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP3             Open

      Monitor type select monochrome           JP3            Closed

  »   NPU mode select synchronous with         JP5           pins 1 & 2
      CPU                                                     closed

      NPU mode select synchronous with         JP5           pins 2 & 3
      oscillator installed at Y1                              closed

  »   External battery select 6VDC            JP200            Open

      External battery select 3.6VDC          JP200           Closed

  »   CMOS memory normal operation            JP202            Open

      CMOS memory clear                       JP202           Closed

                            DRAM CONFIGURATION

     Size         Bank 0          Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9       NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9       NONE           NONE

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

     5MB        (4) 256K x 9    (4) 1M x 9        NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9    (4) 1M x 9        NONE

     8MB        (4) 1M x 9      (4) 1M x 9        NONE           NONE

     9MB        (4) 256K x 9    (4) 1M x 9     (4) 1M x 9        NONE

     12MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9        NONE

     16MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

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

     20MB       (4) 4M x 9      (4) 1M x 9        NONE           NONE

     24MB       (4) 1M x 9      (4) 1M x 9     (4) 4M x 9        NONE

     32MB       (4) 4M x 9      (4) 4M x 9        NONE           NONE

     36MB       (4) 1M x 9      (4) 4M x 9     (4) 4M x 9        NONE

     48MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9        NONE

     64MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9     (4) 4M x 9

  Note:Banks 2 and 3 are utilized when a 32-bit external memory card is
  installed at S1.

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1       (TAG) U15      (TAG) U16

     32KB        (4) 8K x 8        NONE          NONE        (1) 8K x 8

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8     (1) 8K x 8

     128KB      (4) 32K x 8        NONE          NONE        (1) 32K x 8

        CACHE JUMPER CONFIGURATION

        Size                 JP6

        32KB          pins 1 & 2 closed

        64KB          pins 2 & 3 closed

        128KB         pins 2 & 3 closed