AST RESEARCH, INC.

MID-SIZE BRAVO 486/33 (MODEL 202385-002)

Processor                    80486DX
Processor Speed              33MHz
Chip Set                     AST
Max. Onboard DRAM            16MB
SRAM Cache                   None
BIOS                         AST
Dimensions                   340mm x 245mm
I/O Options                  Bus mouse port, floppy drive interface

                             IDE interface, parallel port, serial port (2),
                             SVGA port
NPU Options                  4167

[Image]

                                CONNECTIONS

  Purpose                   Location     Purpose                Location

  SVGA port                    CN1       Floppy drive             J24
                                         interface

  Bus mouse port               CN2       External battery         J26

  Serial port 1 (COM1)         CN3       Speaker                  J27

  Parallel port                CN4       Fan power                J28

  VGA pass-through             J19       Front panel              P29
                                         switches & LEDs

  Serial port 2 (COM2)         J20       IDE interface LED        J40

  IDE interface                J22

                        USER CONFIGURABLE SETTINGS

               Function                  Jumper/Switch        Position

  »   Parity check enabled                     E1              closed

      Parity check disabled                    E1               open

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

  »   Factory configured - do not              E3             pins 2 & 3
      alter                                                    closed

  »   VGA port enabled                    SW1/switch 1         closed

      VGA port disabled                   SW1/switch 1          open

  »   Password check enabled              SW1/switch 2          open

      Password check disabled             SW1/switch 2         closed

  »   Factory configured - do not         SW1/switch 3          open
      alter

  »   Factory configured - do not         SW1/switch 4          open
      alter

  »   Factory configured - do not         SW1/switch 5         closed
      alter

  »   Factory configured - do not         SW1/switch 6         closed
      alter

  »   Monitor type select PS/2 style      SW1/switch 7         closed

      Monitor type select AT style        SW1/switch 7          open

  »   Monitor type select VGA or          SW1/switch 8          open
      fixed-frequency

      Monitor type select                 SW1/switch 8         closed
      multi-frequency

           DRAM CONFIGURATION

     Size        Bank 0        Bank 1

     2MB        (2) 1M x 9      NONE

     4MB        (2) 1M x 9   (2) 1M x 9

     8MB        (2) 4M x 9      NONE

     10MB       (2) 4M x 9   (2) 1M x 9

     16MB       (2) 4M x 9   (2) 4M x 9

    VRAM CONFIGURATION

  Size         VRAM

  256KB        NONE

  512KB      (2) 44256