AMERICAN MEGATRENDS, INC.

386/486 MARK III CONVERTIBLE

Processor             80386DX (80486DX on MARK III adapter)
Processor Speed       25/33MHz
Chip Set              AMI
Max. Onboard DRAM     32MB
Cache                 64KB
BIOS                  AMI
Dimensions            330mm x 218mm
I/O Options           32-bit external memory card slot, CPU/NPU expansion
                      card slot
NPU Options           80387 (3167/4167 on MARK III adapter)

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  External battery           J1       Turbo switch                 J8

  Turbo LED                  J5       Reset switch                J14

  Speaker                    J6       32-bit external memory      P10
                                      card

  Power LED & keylock        J7       CPU/NPU expansion card      P13

                        USER CONFIGURABLE SETTINGS

             Function                  Jumper/Switch         Position

      DRAM address sequence                 J3            pins 1 & 2, 3 &
      select bank 0, then bank 1                             4 closed

      DRAM address sequence                 J3            pins 2 & 3, 4 &
      select bank 1, then bank 0                             5 closed

  »   CMOS memory normal                    J4                 Open
      operation

      CMOS memory clear                     J4                Closed

  »   Factory configured - do not      SW1/switch 1            Off
      alter

      Monitor type select color        SW1/switch 2             On

      Monitor type select              SW1/switch 2            Off
      monochrome

      Note : Cache is factory installed and is not configurable. The size
      of the cache & tag are unidentified.

              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