AMERICAN MEGATRENDS, INC.

BABY EISA

Processor             80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed       20/25/33/50(internal)/50/66(internal)MHz
Chip Set              OPTI
Max. Onboard DRAM     128MB
Cache                 64/256KB
BIOS                  AMI
Dimensions            330mm x 218mm
I/O Options           Mouse connector
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  Mouse connector               J2      Speaker                    J22

  Power LED & keylock          J31      Reset switch               J27

                        USER CONFIGURABLE SETTINGS

                Function                     Switch          Position

  »   Factory configured - do not             SW1/1             Off
      alter

  »   Monitor type select monochrome          SW1/2             Off

      Monitor type select color               SW1/2             On

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

      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

     64MB        (4) 16M x 9      NONE

     128MB       (4) 16M x 9   (4) 16M x 9

     CACHE CONFIGURATION

     Size          Bank 0

     64KB        (8) 8K x 8

     256KB      (8) 32K x 8

                 CACHE JUMPER CONFIGURATION

   Size       J14       J15       J18       J19       J30

   64KB      Open      Open       Open      Open     1 & 2

  256KB     Closed    Closed     Closed    Closed    1 & 2

  Note: Pins designated should be in the closed position.

                 CPU TYPE CONFIGURATION

            Type                        J9

          80486SX                pins 2 & 3 closed

          80486DX            pins 1 & 2, 3 & 4 closed

          80486DX2           pins 1 & 2, 3 & 4 closed

                          CPU SPEED CONFIGURATION

    Jumper       J3          J6           J16          J17         J30

    20MHz       1 & 2      Closed        Open          Open       2 & 3

    25MHz       1 & 2       Open         Open          Open       1 & 2

    33MHz       1 & 2       Open         Open         Closed      1 & 2

    50iMHz      1 & 2       Open         Open          Open       1 & 2

    50MHz       2 & 3       Open        Closed        Closed      1 & 2

    66iMHz      1 & 2       Open         Open         Closed      1 & 2

  Note : When installing an 80487SX or an ODP486SX use the CPU socket
  labled CPU-X. Pins designated should be in the closed position.