
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

