AUSTIN COMPUTER SYSTEMS

486/SLC 25

Processor           80386SX/CX486SLC
Processor Speed     25MHz
Chip Set            C & T
Max. Onboard DRAM   16MB
Cache               None
BIOS                AMI
Dimensions          220mm x 220mm
I/O Options         16-bit external cache memory card slot
NPU Options         80387SX

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  Speaker                   J1        External battery           J13

  Turbo switch              J7        Reset switch               J14

  Turbo LED                 J8        16-bit external            S1
                                      cache memory card

  Power LED &              J10
  keylock

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CPU speed select forced high             J7            pins 1 & 2
                                                              closed

  »   Monitor type select color                J12           pins 1 & 2
                                                              closed

      Monitor type select monochrome           J12           pins 2 & 3
                                                              closed

  »   CMOS memory normal operation             J15           pins 2 & 3
                                                              closed

      CMOS memory clear                        J15           pins 1 & 2
                                                              closed

  »   Cache card absent                        W1            pins 2 & 3
                                                              closed

      Cache card present                       W1            pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (2) 256K x 9   (2) 256K x 9      NONE           NONE

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

     2MB        (2) 1M x 9        NONE           NONE           NONE

     3MB        (2) 256K x 9   (2) 256K x 9   (2) 1M x 9        NONE

     4MB        (2) 1M x 9     (2) 1M x 9        NONE           NONE

     5MB        (2) 256K x 9   (2) 256K x 9   (2) 1M x 9     (2) 1M x 9

     6MB        (2) 1M x 9     (2) 1M x 9     (2) 1M x 9        NONE

     8MB        (2) 1M x 9     (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

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

     10MB       (2) 1M x 9     (2) 4M x 9        NONE           NONE

     12MB       (2) 1M x 9     (2) 1M x 9     (2) 4M x 9        NONE

     16MB       (2) 4M x 9     (2) 4M x 9        NONE           NONE

                 CACHE JUMPER CONFIGURATION FOR CACHE CARD

           Size              J2        J3       J4        J5        J6

      64KB/2-Way Set        1 & 2    1 & 2     1 & 2    1 & 2     1 & 2
       Associative

   64KB/Directly Mapped     2 & 3    2 & 3     2 & 3    2 & 3     2 & 3

  Note: Pins designated should be in the closed position.