YOUNG MICRO SYSTEMS, INC.

VS486F

Processor        80486SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/66(internal)MHz
Chip Set         Symphony
Max. Onboard DRAM32MB
Cache            64/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                     CN1       Turbo LED                  CN4

  Power LED & keylock         CN2       Turbo switch               CN5

  Reset switch                CN3

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

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

      16MB        (4) 4M x 9         NONE

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

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

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

                                      CPU TYPE CONFIGURATION

   Type      JP11     JP10     JP9      JP8      JP7      JP6      JP5      JP4      JP3    JP2

  80486SX    Closed   Open     Open     Open     Open    Closed   Closed   Open     Closed  Open

  80486DX    Open    Closed   Closed   Closed   Closed   Open     Closed   Closed   Closed  Open

  80486DX2   Closed   Open     Open     Open    Closed   Open     Closed   Closed   Closed  Open

             CACHE CONFIGURABLE

     Size          Cache           TAG

     64KB        (8) 8K x 8    (1) 8K x 8

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

                        CACHE JUMPER CONFIGURATION

   Size       JP17       JP16       JP15       JP14      JP13      JP12

   64KB      Closed      Open      Closed      Open     Closed     Open

   256KB      Open      Closed      Open      Closed     Open      Closed