ASUS COMPUTER INTERNATIONAL

EISA-486A/EISA-486E

Processor         80486SX/80487SX/80486DX
Processor Speed   20/25/33/50MHz
Chip Set          Intel
Max. Onboard DRAM 64MB
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               CON2      Speaker                    CON5

  Turbo switch               CON3      Power LED & keylock        CON6

  Turbo LED                  CON4

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

  »   Monitor type select monochrome            JP1          pins 1 & 2
                                                               closed

      Monitor type select color                 JP1          pins 2 & 3
                                                               closed

  »   Factory configured - do not alter         JP2             N/A

  »   Power good signal detect from power       JP3          pins 2 & 3
      supply (EISA-486E)                                       closed

      Power good signal detect from board       JP3          pins 1 & 2
      (EISA-486E)                                              closed

  »   Factory configured - do not alter         JP5             N/A

  »   Factory configured - do not alter         JP5             N/A

  »   CPU is asynchronous with oscillator      JP100         pins 2 & 3
      installed at Y1 (EISA-486A)                              closed

      CPU is synchronous with oscillator       JP100         pins 1 & 2
      installed at Y1 (EISA-486A)                              closed

                            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) 256K x 9   (4) 256K x 9   (4) 256K x 9  (4) 256K x 9

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

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

     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

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

     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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (2) 16K x 4

     128KB      (4) 32K x 8        NONE       (2) 64K x 4

     256KB      (4) 32K x 8    (4) 32K x 8    (2) 64K x 4

                   CACHE RESISTOR CONFIGURATION

      Size              R1               R2              R3

      64KB          Installed      Not installed    Not installed

      128KB       Not installed      Installed      Not installed

      256KB       Not installed    Not installed      Installed

  CPU SPEED CONFIGURATION

     Size          JP4

    20MHz         Closed

    25MHz         Closed

    33MHz          Open

    50MHz          Open