AUSTIN COMPUTER SYSTEMS

486 33VLI

Processor         80486SX/80486DX
Processor Speed   33MHz
Chip Set          Symphony
Max. Onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                     JP1       Turbo switch              JP10

  Reset switch                JP2       Turbo LED                 JP11

  Power LED & keylock         JP5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP6            Closed

      Monitor type select monochrome           JP6             Open

  »   CPU speed select iOSC/2                 JP27             Open

      CPU speed select iOSC/1                 JP27            Closed

  »   Select 0 wait state                     JP32            Closed

      Select 1 wait state                     JP32             Open

  »   Factory configured - do not alter       JP33           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 1          Bank 2

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      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) 32K x 8

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

                        CACHE JUMPER CONFIGURATION

   Size     JP22     JP23     JP24     JP25     JP26      JP28      JP34

   64KB     1 & 2    1 & 2    1 & 2   1 & 2     Open     Closed    1 & 2

  128KB     2 & 3    1 & 2    1 & 2   1 & 2    Closed     Open      Open

  256KB     2 & 3    2 & 3    1 & 2   1 & 2     Open     Closed    2 & 3

  Note: Pins designated should be in the closed position.

                    CACHE JUMPER CONFIGURATION (CON’T)

  Size     JP35   JP36    JP37    JP38     JP39    JP40    JP41     JP42

  64KB     2 &     2 &    2 &     Open      2 &    2 &     Open     2 & 3
            3      3       3                3       3

  128KB    1 &     1 &    1 &     Closed   Open    1 &    Closed    2 & 3
            2      2       2                        2

  256KB    2 &     2 &    2 &     Open      2 &    2 &     Open     2 & 3
            3      3       3                3       3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               JP12              JP13               JP14

      80486SX             Open           pins 2 & 3            Open
                                           closed

      80486DX            Closed          pins 1 & 2           Closed
                                           closed