ASUS COMPUTER INTERNATIONAL

EISA-486SI

Processor             80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed       20/25/33/50/66(internal)MHz
Chip Set              SIS
Max. Onboard DRAM     128MB
Cache                 64/128/256KB
BIOS                  Award
Dimensions            330mm x 218mm
I/O Options           None
NPU Options           4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch               CON1      Speaker                    CON4

  Turbo switch               CON2      Power LED & keylock        CON5

  Turbo LED                  CON3

                        USER CONFIGURABLE SETTINGS

               Function                     Jumper          Position

  »   Factory configured - do not            JP1             Closed
      alter

  »   Factory configured - do not            JP2        pins 1 & 2 closed
      alter

  »   Factory configured - do not            JP3        pins 2 & 3 closed
      alter

  »   Factory configured - do not            JP4        pins 2 & 3 closed
      alter

  »   Factory configured - do not            JP5        pins 2 & 3 closed
      alter

  »   Factory configured - do not            JP6        pins 1 & 2 closed
      alter

  »   Factory configured - do not            JP7        pins 2 & 3 closed
      alter

  »   Factory configured - do not            JP8        pins 2 & 3 closed
      alter

  »   CPU speed select <= 33MHz              JP9        pins 1 & 2 closed
      (internal)

      CPU speed select 50MHz                 JP9        pins 2 & 3 closed
      (internal)

  Note: Jumpers JP1 - JP8 are absent from revisions 1.2 and later.

              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

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

      16MB        (4) 4M x 9         NONE

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

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

      64MB        (4) 16M x 9        NONE

     128MB        (4) 16M x 9    (4) 16M x 9

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (U39)      TAG (U40)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8        NONE

     128KB      (4) 32K x 8        NONE       (1) 8K x 8        NONE

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

                   CACHE RESISTOR CONFIGURATION

      Size          RP1/row 1        RP1/row 2        RP1/row 3

      64KB          Installed      Not installed    Not installed

      128KB       Not installed      Installed      Not installed

      256KB       Not installed    Not installed      Installed

                          CPU TYPE CONFIGURATION

    Type      SW1/1      SW1/2     SW1/3     SW1/4      SW1/5     SW1/6

  80486SX      Off        Off       Off       Off        On         On

  80487SX      Off        On        On         On        Off        On

  80486DX       On        On        On        Off        Off        On

  80486DX2      On        On        On        Off        Off        On