UNIDENTIFIED

486SC-H

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   20/25/33/50(internal)MHz
Chip Set          Unidentified
Max. Onboard DRAM 32MB
Cache             32/128KB
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   J1       Speaker                     J4

  Turbo switch                J2       Power LED & keylock         J5

  Reset switch                J3

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

  »   CPU clock speed select 1x                  J8          pins 1 & 2
                                                               closed

      CPU clock speed select 2x                  J8          pins 2 & 3
                                                               closed

  »   Monitor type select                        J9             Open
      monochrome/EGA/VGA

      Monitor type select color                  J9            Closed

  »   Cache wait state select 1 wait            J12             Open
      state

      Cache wait state select 0 wait            J12          pins 3 & 4
      states                                                   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          TAG

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

     128KB       (4) 32K x 8   (1) 8K x 8

                        CACHE JUMPER CONFIGURATION

    Size          JS1            JS2             JS3             JS4

    32KB       pins 1 & 2     pins 1 & 2      pins 1 & 2      pins 1 & 2
                closed          closed         closed          closed

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

          CPU TYPE CONFIGURATION

        Type                  J7

       80486SX        pins 1 & 2 closed

       80487SX        pins 2 & 3 closed

       80486DX        pins 2 & 3 closed

      80486DX2        pins 2 & 3 closed