AUSTIN COMPUTER SYSTEMS

486/DX2 50E WINSTATION

Processor           80486DX/80486DX2
Processor Speed     25/33/50(internal)/50/66(internal)MHz
Chip Set            None
Max. Onboard DRAM   64MB
Cache               64/128/256KB (on external CPU card)
BIOS                AMI
Dimensions          330mm x 218mm
I/O Options         32-bit external CPU card slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Speaker                    J2       Reset switch                 J7

  Turbo LED                  J5       Power LED & keylock          J8

  Turbo switch               J6       32-bit external CPU          S1
                                      card

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not alter        CE1              N/A
      (on external CPU card)

  »   Factory configured - do not alter        CE2              N/A
      (on external CPU card)

  »   I/O recovery time disabled               E1            pins 1 & 2
      (normal)                                                closed

      I/O recovery time enabled                E1            pins 2 & 3
      (slower)                                                closed

  »   Factory configured - do not alter        E2            pins 2 & 3
                                                              closed

  »   Factory configured - do not alter        E3            pins 1 & 2
                                                              closed

  »   System base memory size select           J1            pins 1 & 2
      640KB                                                   closed

      System base memory size select           J1            pins 2 & 3
      512KB                                                   closed

  »   Monitor type select color                JP2            Closed

      Monitor type select monochrome           JP2             Open

  »   Factory configured - do not alter        JP3           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2         Bank 3

      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    (1) 1M x 36       NONE

     16MB        (4) 1M x 9     (4) 1M x 9    (1) 1M x 36    (1) 1M x 36

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

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

     24MB        (4) 4M x 9     (4) 1M x 9    (1) 1M x 36       NONE

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

     40MB        (4) 4M x 9     (4) 4M x 9    (1) 1M x 36    (1) 1M x 36

     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 36    (4) 4M x 36

                  DRAM JUMPER CONFIGURATION

        Size                  J3                   J4

         4MB           pins 2 & 3 closed   pins 2 & 3 closed

         8MB           pins 2 & 3 closed   pins 2 & 3 closed

        12MB           pins 2 & 3 closed   pins 2 & 3 closed

        16MB           pins 2 & 3 closed   pins 2 & 3 closed

        16MB           pins 1 & 2 closed   pins 1 & 2 closed

        20MB           pins 1 & 2 closed   pins 1 & 2 closed

        24MB           pins 2 & 3 closed   pins 1 & 2 closed

        32MB           pins 1 & 2 closed   pins 1 & 2 closed

        40MB           pins 2 & 3 closed   pins 1 & 2 closed

        48MB           pins 1 & 2 closed   pins 1 & 2 closed

        64MB           pins 1 & 2 closed   pins 1 & 2 closed

[Image]

           CACHE CONFIGURATION

    Size         Bank 0        Bank 1

    64KB       (5) 8K x 8    (5) 8K x 8

    128KB      (5) 32K x 8      NONE

    256KB      (5) 32K x 8   (5) 32K x 8

                 CACHE JUMPER CONFIGURATION

   Size       SR1       SR2       SR3       SR4       SR5

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

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

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

  Note: Pins designated should be in the closed position.

             CACHE JUMPER CONFIGURATION (CON’T)

   Size       SR6       SR7       SR8       SR9       SR10

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

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

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

  Note: Pins designated should be in the closed position.