SILICON VALLEY COMPUTER, INC.

486WB

Processor         80486DX
Processor Speed   33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             64/256KB
BIOS              C & T
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  External battery           J10       32-bit external             S1
                                       memory card

  Power LED & keylock        J23       Reset switch               SW1

  Speaker                    J24       Turbo switch               SW2

  Turbo LED                 JP12

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper          Position

  »   Monitor type select CGA                   JP1            Closed

      Monitor type select monochrome,           JP1             Open
      EGA, or VGA

  »   CMOS memory normal operation              JP2          pins 2 & 3
                                                               closed

      CMOS memory clear                         JP2          pins 1 & 2
                                                               closed

  »   Bus speed select ATCLK/4                  JP3            Closed

      Bus speed select ATCLK/6                  JP3             Open

  »   Factory configured - do not alter         JP4             N/A

  »   Factory configured - do not alter         JP5             N/A

  »   Factory configured - do not alter         JP6             N/A

  »   Factory configured - do not alter         JP7             N/A

              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

      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 (U33)      TAG (U34)

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

     256KB       (8) 8K x 8    (1) 64K x 1    (1) 32K x 8

           CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10      JP11

   64KB      Open     Open      Open      Open

  256KB     Closed   Closed    Closed    Closed