ASUS COMPUTER INTERNATIONAL

ISA-486SI


Processor             80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed       20/25/33/50(internal)/50/66(internal)MHz
Chip Set              SIS
Max. Onboard DRAM     32MB
Cache                 64/128/256KB
BIOS                  AMI
Dimensions            234mm x 221mm
I/O Options           None
NPU Options           4167


[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Turbo LED                   CON1      Turbo switch              CON4

  Power LED & keylock         CON2      Reset switch              CON5

  Speaker                     CON3

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper        Position

  »   CPU speed select iOSC/1                   JP1          pins 1 & 2
                                                              closed

      CPU speed select iOSC/2                   JP1          pins 2 & 3
                                                              closed

  »   Monitor type select                       JP2          pins 2 & 3
      monochrome/other                                        closed

      Monitor type select CGA                   JP2          pins 1 & 2
                                                              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

      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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

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

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

                        CACHE JUMPER CONFIGURATION

      Size               CJ1                CJ2                CJ3

      64KB            pins 2 & 3         pins 2 & 3            Open
                       closed              closed

      128KB           pins 1 & 2            Open              Closed
                       closed

      256KB           pins 1 & 2         pins 1 & 2            Open
                       closed              closed

                          CPU TYPE CONFIGURATION

          Type                     CPJ1                     CPJ2

         80486SX                   Open              pins 2 & 3 closed

         80487SX            pins 2 & 3 closed       pins 1 & 2 and 3 & 4
                                                           closed

        ODP486SX            pins 2 & 3 closed       pins 1 & 2 and 3 & 4
                                                           closed

         80486DX            pins 1 & 2 closed       pins 1 & 2 and 3 & 4
                                                           closed

        80486DX2            pins 1 & 2 closed       pins 1 & 2 and 3 & 4
                                                           closed