
SOYO COMPUTER CO., LTD.

386DX BOARD

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          ETEQ
Max. Onboard DRAM 16MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J17      External battery            J20

  Speaker                     J18      Turbo switch                J21

  Reset switch                J19      Turbo LED                   J22

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome           JP3             Open

      Monitor type select color                JP3            Closed

     CMOS memory normal operation             JP5           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP5           pins 2 & 3
                                                              closed

              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) 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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

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

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

                     CACHE JUMPER CONFIGURATION

   Size      J4        J6       J7        J8        J9       J10

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

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

  256KB     Open     Closed    2 & 3     2 & 3    2 & 3      Open

  Note: Pins designated should be in the closed position.

             CACHE JUMPER CONFIGURATION (CONT)

   Size       J11       J12       J13       J14       J15

   64KB     Closed     Open       Open     1 & 2     1 & 2

  128KB     Closed     Open      Closed    1 & 2     4 & 5

  256KB     Closed    Closed     Closed    1 & 2     5 & 6

  Note: Pins designated should be in the closed position.

