
AMERICAN DIGICOM CORPORATION

486M

Processor         80486SX/80486DX
Processor Speed   33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             64/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J9       Turbo switch               J12

  Power LED & keylock         J10       Turbo LED                  J13

  Speaker                     J11       Reset switch               J14

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                J1             Closed

      Monitor type select monochrome           J1              Open

     CMOS memory normal operation             J8            pins 2 & 3
                                                              closed

      CMOS memory clear                        J8            pins 1 & 2
                                                              closed

     CPU speed select 33MHz                   J16           pins 1 & 2
                                                              closed

      CPU speed select 50MHz                   J16           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

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

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

            CACHE CONFIGURATION

     Size          Bank 0          TAG

     64KB        (8) 8K x 8    (3) 4K x 4

     256KB       (8) 32K x 8   (3) 16K x 4

          CACHE CONFIGURATION

   Size      JP5       JP6       JP7

   64KB      Open     Open      Open

  256KB     Closed   Closed    Closed

                          CPU TYPE CONFIGURATION

       Type               J2                J3                 J4

      80486SX            Open              Open             pins 2 & 3
                                                             closed

      80486DX           Closed           pins 2 & 3         pins 1 & 2
                                          closed             closed

