
ASUS COMPUTER INTERNATIONAL

80486DX-3350

Processor         80486SX/80487SX/80486DX
Processor Speed   33/50MHz
Chip Set          Symphony
Max. Onboard DRAM 64MB
Cache             64/128/256KB
BIOS              AMI/Award
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Reset switch                J4

  Turbo LED                   J2       Speaker                     J5

  Turbo switch                J3       Power LED & keylock         J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Cache read wait states select            J9              Open
      2-1-1-1 (33MHz CPU)

      Cache read wait states select            J9            pins 1 & 2
      3-2-2-2 (50MHz CPU)                                     closed

     Cache write wait states select 0         J9            pins 3 & 4
      (33MHz CPU)                                             closed

      Cache write wait states select 1         J9              Open
      (50MHz CPU)

     Monitor type select color                J10            Closed

      Monitor type select monochrome           J10             Open

                            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

     3MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9      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

     5MB        (4) 1M x 9     (4) 256K x 9      NONE           NONE

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

     7MB        (4) 1M x 9     (4) 256K x 9   (4) 256K x 9  (4) 256K x 9

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

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

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

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

     13MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9    (4) 256K x 9

     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

     17MB       (4) 4M x 9     (4) 256K x 9      NONE           NONE

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

     19MB       (4) 4M x 9     (4) 256K x 9   (4) 256K x 9  (4) 256K x 9

     20MB       (4) 4M x 9     (4) 1M x 9        NONE           NONE

     21MB       (4) 4M x 9     (4) 1M x 9     (4) 256K x 9      NONE

     22MB       (4) 4M x 9     (4) 1M x 9     (4) 256K x 9  (4) 256K x 9

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

     25MB       (4) 4M x 9     (4) 1M x 9     (4) 1M x 9    (4) 256K x 9

     28MB       (4) 4M x 9     (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

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

     33MB       (4) 4M x 9     (4) 4M x 9     (4) 256K x 9      NONE

     34MB       (4) 4M x 9     (4) 4M x 9     (4) 256K x 9  (4) 256K x 9

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

     37MB       (4) 4M x 9     (4) 4M x 9     (4) 1M x 9    (4) 256K x 9

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

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

     49MB       (4) 4M x 9     (4) 4M x 9     (4) 4M x 9    (4) 256K x 9

     52MB       (4) 4M x 9     (4) 4M x 9     (4) 4M x 9     (4) 1M x 9

     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    (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     JS1      JS2      JS3     JS4      JS5      JS6      JS7

   64KB    1 & 2    1 & 2    1 & 2   1 & 2    1 & 2    1 & 2    1 & 2

  128KB    2 & 3    2 & 3    2 & 3   2 & 3    2 & 3    2 & 3    1 & 2

  256KB    1 & 2    1 & 2    1 & 2   2 & 3    2 & 3    2 & 3    2 & 3

  Note: Pins designated should be in the closed position.

          CPU TYPE CONFIGURATION

        Type                  J8

       80486SX        pins 1 & 2 closed

       80487SX        pins 2 & 3 closed

       80486DX        pins 2 & 3 closed

                   CPU SPEED CONFIGURATION

        Speed                 J7                   J9

        33MHz          pins 1 & 2 closed          Open

        50MHz          pins 2 & 3 closed   pins 5 & 6 closed

