AUSTIN COMPUTER SYSTEMS

486 VESA LB WINTOWER

Processor        80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed  20/25/33/50(internal)/66(internal)MHz
Chip Set         Micronics
Max. Onboard     64MB
DRAM
Cache            None
BIOS             Phoenix
Dimensions       330mm x 218mm
I/O Options      32-bit external cache memory card slot, floppy interface,
                 IDE interfaces (2), parallel port, serial port (2), VESA
                 local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  Serial port 2             J11        Auxiliary IDE             J30
                                       interface

  Parallel port             J12        VESA local bus          S1 & S2
                                       slots

  Serial port 1             J14        32-bit external            S3
                                       cache memory card

  Floppy interface          J15        Reset switch              W15

  IDE interface             J16        Turbo LED                 W17

  Auxiliary keyboard        J24        Turbo switch              W18
  connector

  Speaker                   J28        IDE interface LED         W19

  Power LED & keylock       J29

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

  »   CPU type select 80486DX or             W13             pins 1 & 2
      80486DX2                                                closed

      CPU type select 80486SX                W13             pins 2 & 3
                                                              closed

  »   Parallel port select output            W16             pins 2 & 3
      mode (printer)                                          closed

      Parallel port select input             W16             pins 1 & 2
      mode (scanner)                                          closed

  »   Flash memory type select               W20             pins 2 & 3
      default                                                 closed

      Flash memory type select               W20             pins 1 & 2
      recovery                                                closed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2         Bank 3

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

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

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

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

     16MB       (1) 16M x 9        NONE          NONE           NONE

     20MB        (1) 4M x 9    (1) 16M x 9       NONE           NONE

     24MB        (1) 4M x 9     (1) 4M x 9    (1) 16M x 9       NONE

     28MB        (1) 4M x 9     (1) 4M x 9    (1) 4M x 9     (1) 16M x 9

     32MB       (1) 16M x 9    (1) 16M x 9       NONE           NONE

     36MB        (1) 4M x 9    (1) 16M x 9    (1) 16M x 9       NONE

     40MB        (1) 4M x 9     (1) 4M x 9    (1) 16M x 9    (1) 16M x 9

     48MB       (1) 16M x 9    (1) 16M x 9    (1) 16M x 9       NONE

     52MB        (1) 4M x 9    (1) 16M x 9    (1) 16M x 9    (1) 16M x 9

     64MB       (1) 16M x 9    (1) 16M x 9    (1) 16M x 9    (1) 16M x 9

         DRAM SWITCH CONFIGURATION

  Size     SW1/1   SW1/2    SW1/3    SW1/4

   4MB      On       On       On       On

   8MB      Off      On       On       On

  12MB      On      Off       On       On

  16MB      Off     Off       On       On

  16MB      On       On      Off       On

  20MB      On       On      Off      Off

  24MB      On      Off       On      Off

  28MB      Off      On       On      Off

  32MB      Off      On      Off       On

  36MB      On      Off      Off      Off

  40MB      Off     Off       On      Off

  48MB      On      Off      Off       On

  52MB      Off     Off      Off      Off

  64MB      Off     Off      Off       On

             CPU SPEED CONFIGURATION

  Speed     SW1/5     SW1/6    SW1/7     SW1/8

  25MHz      On        Off       On       Off

  33MHz      Off       On       Off       Off

  50iMHz     On        Off       On       Off

  66iMHz     Off       On       Off       Off