INFORMTECH INTERNATIONAL, INC.

486VL

Processor        80486SX/80487SX/ODP486SX/80486DX/80486DX2
Processor Speed  25/33/50(internal)/66(internal)MHz
Chip Set         UMC
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

  Power LED & keylock         J1       Reset switch                J5

  Speaker                     J2       External battery            J6

  Turbo switch                J3       32-bit VESA local bus   SL1 & SL2
                                       slots

  Turbo LED                   J4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                W1             Closed

      Monitor type select monochrome           W1              Open

  »   CMOS memory normal operation            W14             Closed

      CMOS memory clear                       W14              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

      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         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

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

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

           CACHE JUMPER CONFIGURATION

   Size       W6       W7        W8        W9

   64KB      Open     Open      Open      Open

  128KB      Open    Closed     Open      Open

  256KB     Closed   Closed    Closed    Closed

                    CACHE JUMPER CONFIGURATION (CON’T)

    Size           W10            W11            W12             W13

    64KB        pins 1 & 2        Off         pins 1 & 2      pins 1 & 2
                 closed                         closed         closed

    128KB       pins 2 & 3     pins 1 & 2     pins 1 & 2      pins 2 & 3
                 closed          closed         closed         closed

    256KB       pins 1 & 2     pins 2 & 3     pins 2 & 3      pins 2 & 3
                 closed          closed         closed         closed

                          CPU TYPE CONFIGURATION

        CPU Type                    W2                       W3

         80486SX            pins 2 & 3 closed               Open

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

        ODP486SX             pins 1 & 2, 3 & 4       pins 1 & 2 closed
                                  closed

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

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

              VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed      Wait states           W4              W5

     < 33MHz      0 wait states         Open            Open

     > 33MHz       1 wait state        Closed          Closed