
J-MARK COMPUTER CORPORATION

386DX 25/40 NON CACHE

Processor         80386DX
Processor Speed   25/40MHz
Chip Set          CGS
Max. Onboard DRAM 32MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            JP2       Reset switch               JP9

  Speaker                     JP7       Turbo switch              JP10

  Power LED & keylock         JP8       Turbo LED                 JP11

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             JP3           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP3           pins 2 & 3
                                                              closed

     NPU synchronous with CPU                 JP5             Open

      NPU asynchronous with CPU                JP5            Closed

     Monitor type select color                JP6            Closed

      Monitor type select monochrome           JP6             Open

     Turbo switch enabled                    JP10            Closed

      Turbo switch disabled                   JP10             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

      5MB         (4) 1M x 9     (4) 256K x 9

      5MB         (4) 256K x 9    (4) 1M x 9

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      20MB        (4) 1M x 9      (4) 4M x 9

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

