MODULAR CIRCUIT TECHNOLOGY

MCT-M486VL-33/66

Processor         80486SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          UMC
Max. Onboard DRAM 32MB
Cache             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

  External battery            J1       Speaker                    J13

  Turbo LED                  J10       Power LED & keylock        J14

  Turbo switch               J11       32-bit VESA local bus   SL1 & SL2
                                       slots

  Reset switch               J12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color               JP13          pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP13          pins 1 & 2
                                                              closed

  »   Factory configured - do not             JP24            Closed
      alter

              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

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

      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

     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          JP22           JP23           JP27            JP28

   128KB       pins 2 & 3        Open          Closed        pins 2 & 3
                 closed                                        closed

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

                          CPU TYPE CONFIGURATION

          Type                     JP25                     JP26

         80486SX             pins 1 & 2, 3 & 4              Open
                                  closed

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

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

             CPU SPEED CONFIGURATION

  Speed     JP18      JP19      JP20      JP21

  25MHz    Closed    Closed     Open      Open

  33MHz     Open     Closed     Open      Open

  50iMHz   Closed    Closed     Open      Open

  66iMHz    Open     Closed     Open      Open

  VESA WAIT STATE CONFIGURATION

   Wait states         JP16

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP15

   <= 33MHz        Open

   > 33MHz        Closed