INFORMTECH INTERNATIONAL, INC.

IT486EL

Processor        80486SX/80487SX/80486DX/80486DX2
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM128MB
Cache            64/128/256KB
BIOS             Phoenix
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                      J4       Reset switch               S9

  Power LED & keylock          J5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome          JP5              Open

      Monitor type select color               JP5             Closed

  »   Factory configured - do not             JP6              Open
      alter

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

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

     16MB        (4) 1M x 9    (4) 1M x 9

     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         Bank 1       TAG (U52)      TAG (U53)

     64KB        (4) 8K x 8     (4) 8K x 8    (2) 8K x 8        NONE

     128KB      (4) 32K x 8        NONE       (2) 8K x 8        NONE

     256KB      (4) 32K x 8    (4) 32K x 8    (2) 8K x 8     (2) 8K x 8

               CACHE JUMPER CONFIGURATION

  Size      JP12         JP13        JP14        JP15

  64KB      Open         Open        Open        Open

  128KB     Open        Closed       Open       Closed

  256KB    Closed       Closed      Closed      Closed

                          CPU TYPE CONFIGURATION

         CPU Type                    JP8                    JP10

          80486SX             pins 2 & 3 closed             Open

          80487SX              pins 1, 2, 3, & 4      pins 1 & 2 closed
                                    closed

        80486DX/DX2            pins 1, 2, 3, & 4      pins 2 & 3 closed
                                    closed

                         CPU SPEED CONFIGURATION

  CPU speed      JP2          JP3         JP4          JP7         JP9

    20MHz        Open       Closed       1 & 2         Open       2 & 3

    25MHz        Open        Open        1 & 2         Open       2 & 3

    33MHz       Closed       Open        1 & 2         Open       2 & 3

    40MHz        Open        Open        2 & 3        Closed      2 & 3

   50iMHz        Open        Open        1 & 2         Open       2 & 3

    50MHz       Closed       Open        1 & 2         Open       1 & 2

   66iMHz       Closed       Open        1 & 2         Open       2 & 3

  Note: Pins designated should be in the closed position.