
AMERICAN DIGICOM CORPORATION

DIGIS-3486HN

Processor        CX486DLC/80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         OPTi
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J2       Turbo LED                  J44

  Power LED & keylock         J42       Reset switch               J45

  Turbo switch                J43       Speaker                   SPKR

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             J3            pins 2 & 3
                                                              closed

      CMOS memory clear                        J3            pins 1 & 2
                                                              closed

     Monitor type select color                J6             Closed

      Monitor type select monochrome           J6              Open

     Supports CYRIX CPU                      JP25            Closed

      Supports other CPU                      JP26             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) 256K x 9    (4) 1M x 9

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

      16MB        (4) 4M x 9         NONE

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

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

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

                            CACHE CONFIGURATION

   Size     Max Cachable    Bank 0    Bank 1     TAG/U29       TAG/U30

   64KB         8MB         (4) 8K    (4) 8K    (1) 8K x 8       NONE
                             x 8       x 8

  128KB         16MB        (4) 32K    NONE     (1) 8K x 8       NONE
                             x 8

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

                        CACHE JUMPER CONFIGURATION

    Size          J34             J36            J37             J38

    64KB          Open         pins 2 & 3        Open           Open
                                closed

   128KB         Closed        pins 1 & 2       Closed         Closed
                                closed

   256KB         Closed        pins 2 & 3       Closed         Closed
                                closed

                          CPU SPEED CONFIGURATION

    Speed          J30            J32            J39             J40

    20MHz         Closed        Closed        pins 1 & 2      pins 1 & 2
                                               closed          closed

    25MHz          Open          Open         pins 1 & 2      pins 1 & 2
                                               closed          closed

    33MHz          Open         Closed        pins 1 & 2      pins 1 & 2
                                               closed          closed

    40MHz         Closed        Closed        pins 1 & 2      pins 2 & 3
                                               closed          closed

   50i MHz         Open          Open         pins 1 & 2      pins 1 & 2
                                               closed          closed

    50MHz          Open          Open         pins 2 & 3      pins 2 & 3
                                               closed          closed

   66i MHz         Open         Closed        pins 2 & 3      pins 2 & 3
                                               closed          closed

                          CPU TYPE CONFIGURATION

    Type       J23     J24       J27       J28     J29     J31       J41

  CX486DLC      1 &   Closed     N/A       N/A     N/A     Open      N/A
                2

   80386DX      1 &   Closed     N/A       N/A     N/A     Open      N/A
     PGA        2

   80386DX      1 &    Open      N/A       N/A     N/A     Open      N/A
    PQFP        2

   80486SX      2 &    N/A      Closed    Open      2 &   Closed    Open
     PGA        3                                   3

   80486SX      2 &    N/A       Open     Closed    2 &   Closed    Open
    PQFP        3                                   3

   80487SX      2 &    N/A      Closed    Open      2 &   Closed    2 & 3
                3                                   3

   80486DX      2 &    N/A      Closed    Closed    1 &   Closed    1 & 2
                3                                   2

  80486DX2      2 &    N/A      Closed    Closed    1 &   Closed    1 & 2
                3                                   2

  Note:Pins designated should be in the closed position.

