J-MARK COMPUTER CORPORATION

JET-386WB


Processor         80386DX
Processor Speed   33/40MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             32/64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387/3167


[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J10       Turbo LED                  JP4

  Power LED & keylock         J23       Reset switch               SW1

  Speaker                     J24       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not alter        J3               N/A

  »   Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

  »   CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

  »   Bus speed select ATCLK/8                 JP3            Closed

      Bus speed select ATCLK/6                 JP3             Open

           DRAM CONFIGURATION

  Size       Bank 0          Bank 1

  1MB     (4) 256K x 9        NONE

  2MB     (4) 256K x 9    (4) 256K x 9

  4MB      (4) 1M x 9         NONE

  8MB      (4) 1M x 9      (4) 1M x 9

  16MB     (4) 4M x 9         NONE

  32MB     (4) 4M x 9      (4) 4M x 9

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

     32KB        (4) 8K x 8       NONE

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

     128KB       (4) 32K x 8      NONE

     256KB       (4) 32K x 8   (4) 32K x 8

                     CACHE JUMPER CONFIGURATION

   Size      JP5      JP6       JP7       JP8      JP9       JP10

   32KB     1 & 2    1 & 2     1 & 2     Open     2 & 3     2 & 3

   64KB     2 & 3    1 & 2     1 & 2     Open     2 & 3     1 & 2

  128KB     2 & 3    1 & 2     2 & 3     Closed   2 & 3     1 & 2

  256KB     2 & 3    2 & 3     2 & 3     Closed   1 & 2     1 & 2

  Note:Pins designated should be in the closed position.