
AUSTIN COMPUTER SYSTEMS

486-33I WBC

Processor              80486SX/80486DX
Processor Speed        20/25/33MHz
Chip Set               OPTI
Max. Onboard DRAM      32MB
Cache                  64/256KB
BIOS                   AMI
Dimensions             330mm x 218mm
I/O Options            Floppy drive interface, IDE interface, parallel
                       port, serial ports (2)
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Reset switch              J1         Serial port 1            J21

  Turbo LED            J2 pins 1 & 2   Serial port 2            J22

  Turbo switch         J2 pins 3 & 4   Power LED &              J23
                                       keylock

  External battery         J10         Speaker                  J24

  Floppy interface         J19         Parallel port            J27

  IDE interface            J20         IDE interface LED        J28

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1           pins 1 & 2
                                                              closed

      Monitor type select monochrome           JP1           pins 2 & 3
                                                              closed

     CMOS memory normal operation             JP2           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP2           pins 2 & 3
                                                              closed

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

     System clock speed select OSC/1          JP4           pins 1 & 2
                                                              closed

      System clock speed select OSC/2          JP4           pins 2 & 3
                                                              closed

     Real time clock normal operation        JP14           pins 1 & 2
                                                              closed

      Real time clock reset                   JP14           pins 2 & 3
                                                              closed

     IRQ4 select serial port 1               JP15           pins 2 & 3
                                                              closed

      IRQ4 select serial port 2               JP15           pins 1 & 2
                                                              closed

      IRQ4 disabled                           JP15           pins 3 & 4
                                                              closed

      IRQ3 select serial port 1               JP16           pins 2 & 3
                                                              closed

     IRQ3 select serial port 2               JP16           pins 1 & 2
                                                              closed

      IRQ3 disabled                           JP16           pins 3 & 4
                                                              closed

      IRQ9 select serial port 1               JP17           pins 2 & 3
                                                              closed

      IRQ9 select serial port 2               JP17           pins 1 & 2
                                                              closed

     IRQ9 disabled                           JP17           pins 3 & 4
                                                              closed

      IRQ5 select serial port 1               JP18           pins 2 & 3
                                                              closed

      IRQ5 select serial port 2               JP18           pins 1 & 2
                                                              closed

     IRQ5 disabled                           JP18           pins 3 & 4
                                                              closed

     Parallel port IRQ select IRQ7           JP19           pins 1 & 2
                                                              closed

      Parallel port IRQ select IRQ5           JP19           pins 2 & 3
                                                              closed

      Parallel port IRQ select no             JP19           pins 3 & 4
      interrupt                                               closed

     IDE interface enabled                   JP25           pins 1 & 2
                                                              closed

      IDE interface disabled                  JP25           pins 2 & 3
                                                              closed

     Floppy interface enabled                JP26           pins 1 & 2
                                                              closed

      Floppy interface disabled               JP26           pins 2 & 3
                                                              closed

     Serial port 1 select COM1               JP27           pins 1 & 2
                                                              closed

      Serial port 1 select COM3               JP27           pins 2 & 3
                                                              closed

      Serial port 1 disabled                  JP27           pins 3 & 4
                                                              closed

     Serial port 2 select COM2               JP28           pins 1 & 2
                                                              closed

      Serial port 2 select COM4               JP28           pins 2 & 3
                                                              closed

      Serial port 2 disabled                  JP28           pins 3 & 4
                                                              closed

     Parallel port select LPT1               JP29           pins 1 & 2
                                                              closed

      Parallel port select LPT2               JP29           pins 2 & 3
                                                              closed

      Parallel port disabled                  JP29           pins 3 & 4
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      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

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

     CACHE CONFIGURATION

     Size          Bank 0

     64KB        (8) 8K x 8

     256KB      (8) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JP9                  JP10

        64KB           pins 2 & 3 closed   pins 2 & 3 closed

        256KB          pins 1 & 2 closed   pins 1 & 2 closed

                          CPU TYPE CONFIGURATION

       Type               JP5               JP6                JP7

     80486SX           pins 3 & 4        pins 3 & 4         pins 3 & 4
                        closed             closed             closed

     80487SX           pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

     80486DX           pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

