UNIDENTIFIED

MST 486A GENERATION STANDARD

Processor         80486DX
Processor Speed   25MHz
Chip Set          OPTI
Max. Onboard DRAM 16MB
SRAM Cache        128KB
BIOS              AMI
Dimensions        330mm x 220mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Reset switch                J4

  Speaker                     J2       External battery            J6

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Monitor type select Color              JP1             pins 1 & 2
                                                               closed

      Monitor type select                    JP1             pins 2 & 3
      Monochrome                                               closed

                            DRAM CONFIGURATION

  Size      Bank 0      Bank 1       Bank 2        Bank 3      Bank Type

   1MB     (4) 256K      NONE         NONE          NONE           A
             x 9

   2MB     (4) 256K     (4) 256K      NONE          NONE           A
             x 9          x 9

   3MB     (4) 256K     (4) 256K     (4) 256K       NONE           A
             x 9          x 9          x 9

   4MB       NONE        NONE         NONE       (36) 411000       B

   4MB     (4) 1M x      NONE         NONE          NONE           A
              9

   5MB     (4) 256K     (4) 1M x      NONE          NONE           A
             x 9           9

   6MB     (4) 256K     (4) 256K     (4) 1M x       NONE           A
             x 9          x 9           9

   7MB     (4) 256K     (4) 256K     (4) 256K    (36) 411000       B
             x 9          x 9          x 9

   8MB     (4) 1M x     (4) 1M x      NONE          NONE           A
              9            9

   9MB     (4) 1M x     (4) 1M x     (4) 256K       NONE           A
              9            9           x 9

  10MB     (4) 256K     (4) 256K     (4) 1M x    (36) 411000       B
             x 9          x 9           9

  12MB     (4) 1M x     (4) 1M x     (4) 1M x       NONE           A
              9            9            9

  13MB     (4) 256k     (4) 1M x     (4) 1M x    (36) 411000       B
             x 9           9            9

  16MB     (4) 1 M x    (4) 1M x     (4) 1M x    (36) 411000       B
              9            9            9

  [Image]

  Note: pins are shown in the closed position

     CACHE CONFIGURATION

     Size          Cache

     128KB      (16) 8K x 8