DIAMOND FLOWER, INC.

DFI-386SX

Processor         80386SX
Processor Speed   16MHz
Chip Set          Intel
Max. Onboard DRAM 8MB
Cache             None
BIOS              DFI
Dimensions        330mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  External battery            J1       Turbo LED                   J12

  Turbo switch              J2/J11     Power LED & keylock         J13

  Reset switch              J3/J9      Auxiliary keyboard          J14

  Speaker                    J10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Battery select internal                  J4            pins 2 & 3
                                                              closed

      Battery select external                  J4            pins 1 & 2
                                                              closed

  »   Monitor type select monochrome           J5            pins 2 & 3
                                                              closed

      Monitor type select color                J5            pins 1 & 2
                                                              closed

  »   BIOS type select 27256                   J6            pins 2 & 3
                                                              closed

      BIOS type select 27512                   J6            pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0          Bank 1         Bank 2        Bank 3

    512KB        (18 41256          NONE           NONE          NONE

    512KB           NONE            NONE        (2) 256K x       NONE
                                                    9

     1MB         (18) 41256      (18) 41256        NONE          NONE

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

     2MB         (18) 41256      (18) 41256     (2) 256K x     (2) 256K x
                                                    9              9

     2MB        (18) 411000         NONE           NONE          NONE

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

     4MB        (18) 411000     (18) 411000        NONE          NONE

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

     8MB        (18) 411000     (18) 411000     (2) 1M x 9    (2) 1M x 9

                  DRAM JUMPER CONFIGURATION

  Size      J15     J16      J17      J18      J19      J20

  512KB    2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

  512KB    1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   1MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   1MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   2MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   2MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   2MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   4MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

   4MB     1 & 2   1 & 2    1 & 2    1 & 2    1 & 2    1 & 2

   8MB     2 & 3   2 & 3    2 & 3    2 & 3    2 & 3    2 & 3

  Note: Pins designated should be in the closed position.

                          DRAM MODE CONFIGURATION

      Mode         Maximum active    DRAM type       J7           J8
                       pages

   Fast page 1           4            100ns         Open         Open
     (FP1)

   Fast page 2           1            100ns         Open        Closed
     (FP2)

   Slow page 1           4            100ns        Closed        Open
     (SP1)

   Slow page 2           4            120ns        Closed       Closed
     (SP2)

  Note:In order to use fast page modes, the DRAM chips must meet the
  following specifications:

  tCAS (access time)=35ns , tCAC (pulse width)=35ns , tCP (precharge
  time)=20ns.