
MINTA TECHNOLOGIES, CO.

80486DX/SX - SC Rev. E

Processor            80486SX/80486DX/80486DX2
Processor Speed      20/25/33/50(internal)/50/66(internal)MHz
Chip Set             Symphony
Max. Onboard DRAM    32MB
Cache                64/128/256/1024KB
BIOS                 AMI
Dimensions           330mm x 218mm
I/O Options          None
NPU Options          4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                     JP1       Turbo switch              JP10

  Reset switch                JP2       Turbo LED                 JP11

  Power LED & keylock         JP5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select monochrome           JP6             Open

      Monitor type select color                JP6            Closed

              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) 4M x 9         NONE

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

                      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) 32K x 8

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

     1024KB      (4) 128K x 8    (4) 128K x 8    (1) 128K x 8

                        CACHE JUMPER CONFIGURATION

   Size      JP22     JP23    JP24     JP25     JP26      JP28      JP34

   64KB     1 & 2    1 & 2    1 & 2    1 & 2    Open     Closed    1 & 2

   128KB    2 & 3    1 & 2    1 & 2    1 & 2   Closed     Open      Open

   256KB    2 & 3    2 & 3    1 & 2    1 & 2    Open     Closed    2 & 3

  1024KB    2 & 3    2 & 3    2 & 3    2 & 3    Open     Closed    2 & 3

  Note:Pins designated should be in the closed position.

                    CACHE JUMPER CONFIGURATION (CONT)

   Size     JP35   JP36    JP37    JP38     JP39   JP40    JP41     JP42

   64KB     2 &     2 &    2 &     Open     2 &     2 &    Open     2 & 3
             3      3       3                3      3

  128KB     1 &     1 &    1 &    Closed    Open    1 &    Closed   2 & 3
             2      2       2                       2

  256KB     2 &     2 &    2 &     Open     2 &     2 &    Open     2 & 3
             3      3       3                3      3

  1024KB    2 &     2 &    2 &     Open     2 &     2 &    Open     2 & 3
             3      3       3                3      3

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               JP12              JP13               JP14

      80486SX             Open           pins 2 & 3            Open
                                           closed

      80486DX            Closed          pins 1 & 2           Closed
                                           closed

                   CPU SPEED CONFIGURATION

        Speed                JP3                  JP27

       iOSC/2          pins 2 & 3 closed          Open

       iOSC/1          pins 1 & 2 closed         Closed

