
ASUS COMPUTER INTERNATIONAL

ISA-486

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33/50MHz
Chip Set          SIS
Max. Onboard DRAM 64MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit memory card
NPU Options       4167

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                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  Reset switch             CN1        Keylock & power LED         CN5

  Turbo switch             CN2        External battery            CN6

  Turbo LED                CN3        32-bit memory               S1
                                      expansion slot

  Speaker                  CN4

                        USER CONFIGURABLE SETTINGS

               Function                     Jumper          Position

     Power good signal detect from          JP1            pins 1 & 2
      power supply                                           closed

      Power good signal detect from          JP1            pins 2 & 3
      board                                                  closed

                                 CPU TYPE

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

  80487SX     Off         On        On         On        Off        On

  80486SX     Off        Off        Off       Off        On         On

  80486DX      On         On        On        Off        Off       Off

                 CLOCK SPEED SELECT

   Speed           JP2                  JP3

   16MHz    pins 2 & 3 closed    pins 2 & 3 closed

   20MHz    pins 2 & 3 closed    pins 2 & 3 closed

   25MHz    pins 2 & 3 closed    pins 1 & 2 closed

   33MHz    pins 2 & 3 closed    pins 1 & 2 closed

   50MHz    pins 1 & 2 closed    pins 1 & 2 closed

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

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

     128KB       (4) 32K x 8      NONE

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

                   CACHE RESISTOR CONFIGURATION

      Size             CJ1              CJ2              CJ3

      64KB          Installed      Not installed    Not installed

      128KB       Not installed      Installed      Not installed

      256KB       Not installed    Not installed      Installed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9       NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9       NONE           NONE

     4MB         (4) 1M x 9        NONE           NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9    (4) 1M x 9        NONE

     8MB         (4) 1M x 9     (4) 1M x 9        NONE           NONE

     10MB       (4) 256K x 9   (4) 256K x 9    (4) 1M x 9     (4) 1M x 9

     12MB        (4) 1M x 9     (4) 1M x 9     (4) 1M x 9        NONE

     16MB        (4) 1M x 9     (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

     16MB        (4) 4M x 9        NONE           NONE           NONE

     18MB       (4) 256K x 9   (4) 256K x 9    (4) 4M x 9        NONE

     20MB       (4) 256K x 9    (4) 4M x 9        NONE           NONE

     24MB        (4) 1M x 9     (4) 1M x 9     (4) 4M x 9        NONE

     32MB        (4) 4M x 9     (4) 4M x 9        NONE           NONE

     36MB        (4) 1M x 9     (4) 4M x 9     (4) 4M x 9        NONE

     40MB        (4) 1M x 9     (4) 1M x 9     (4) 4M x 9     (4) 4M x 9

     48MB        (4) 4M x 9     (4) 4M x 9     (4) 4M x 9        NONE

     64MB        (4) 4M x 9     (4) 4M x 9     (4) 4M x 9     (4) 4M x 9

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