MODULAR CIRCUIT TECHNOLOGY

MCT-M486EV-66

Processor        80486SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/50(internal)/50/66(internal)MHz
Chip Set         SIS
Max. Onboard DRAM128MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Turbo LED                  J3        Speaker                     J6

  Turbo switch               J4        Power LED & keylock         J7

  Reset switch               J5        32-bit VESA local bus   SL1 & SL2
                                       slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome          JP14            Closed

      Monitor type select color               JP14             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

      5MB         (4) 256K x 9    (4) 1M x 9

      5MB         (4) 1M x 9     (4) 256K x 9

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

      16MB        (4) 1M x 9         NONE

      17MB        (4) 256K x 9    (4) 1M x 9

      17MB        (4) 4M x 9     (4) 256K x 9

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

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

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

      64MB        (4) 16M x 9        NONE

      65MB        (4) 256K x 9   (4) 16M x 9

      65MB        (4) 16M x 9    (4) 256K x 9

      68MB        (4) 1M x 9     (4) 16M x 9

      68MB        (4) 16M x 9     (4) 1M x 9

      80MB        (4) 4M x 9     (4) 16M x 9

      80MB        (4) 16M x 9     (4) 4M x 9

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

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

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

                  CACHE JUMPER CONFIGURATION

  Size      JP3     JP4      JP10     JP11     JP12    JP13

  64KB     1 & 2   1 & 2    1 & 2    2 & 3    1 & 2    1 & 2

  128KB    2 & 3   1 & 2    2 & 3    1 & 2    1 & 2    2 & 3

  256KB    2 & 3   2 & 3    2 & 3    4 & 5    2 & 3    2 & 3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

           Type                      JP8                     JP9

          80486SX             pins 2 & 3 closed             Open

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

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

     Pentium Overdrive        pins 1 & 2, 3 & 4       pins 2 & 3 closed
                                   closed

  VESA WAIT STATE CONFIGURATION

   Wait states          JP6

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP5

   <= 33MHz        Open

   > 33MHz        Closed