
AST RESEARCH, INC.

BRAVO LC (94) (202594-XXX)

Processor         80486SX/80486DX/ODP486SX/Pentium Overdrive
Processor Speed   25/33MHz
Chip Set          AST
Max. Onboard DRAM 64MB
Cache             64/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit VESA local bus slot, floppy drive interface, IDE
                  interface, parallel port, PS/2 mouse port, serial ports
                  (2), VGA port, VGA feature connector
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse port            J12       IDE interface              J22

  Parallel port              J13       Floppy drive               J24
                                       interface

  Serial port 1              J14       Chassis fan power          J28

  VGA port                   J18       Front panel LED            J29
                                       connector

  VGA feature connector      J19       32-bit VESA Local bus      SL1
                                       slot

  Serial port 2              J20

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     VESA cache write through enabled         E1           pins 1 & 2
                                                              closed

      VESA cache write back enabled            E1           pins 2 & 3
                                                              closed

     Parallel port IRQ select IRQ7            E2           pins 1 & 2
                                                              closed

      Parallel port IRQ select IRQ5            E2           pins 2 & 3
                                                              closed

     On board video enabled                   E7             Closed

      On board video disabled                  E7              Open

     Monitor type select color                E8             Closed

      Monitor type select monochrome           E8              Open

     Factory configured - do not              E9           pins 1 & 2
      alter                                                   closed

     CMOS memory normal operation            E10             Closed

      CMOS memory clear                       E10              Open

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (1) 256K x        NONE           NONE           NONE
                    36

     2MB        (1) 256K x     (1) 256K x        NONE           NONE
                    36             36

     3MB        (1) 256K x     (1) 256K x     (1) 256K x        NONE
                    36             36             36

     4MB        (1) 256K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

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

     5MB       (1) 1M x 36     (1) 256K x        NONE           NONE
                                   36

     6MB       (1) 1M x 36     (1) 256K x     (1) 256K x        NONE
                                   36             36

     7MB       (1) 1M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     8MB       (1) 1M x 36    (1) 1M x 36        NONE           NONE

     9MB       (1) 1M x 36    (1) 1M x 36     (1) 256K x        NONE
                                                  36

     10MB      (1) 1M x 36    (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     12MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        NONE

     13MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36    (1) 256K x 36

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

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

     17MB      (1) 4M x 36     (1) 256K x        NONE           NONE
                                   36

     18MB      (1) 4M x 36     (1) 256K x     (1) 256K x        NONE
                                   36             36

     19MB      (1) 4M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

                            DRAM CONFIGURATION

     Size         Bank 0        Bank 1         Bank 2          Bank 3

     20MB       (1) 4M x 36   (1) 1M x 36       NONE            NONE

     21MB       (1) 4M x 36   (1) 1M x 36     (1) 256K x        NONE
                                                 36

     22MB       (1) 4M x 36   (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                 36

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

     25MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36    (1) 256K x 36

     28MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     32MB       (1) 4M x 36   (1) 4M x 36       NONE            NONE

     33MB       (1) 4M x 36   (1) 4M x 36     (1) 256K x        NONE
                                                 36

     34MB       (1) 4M x 36   (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                 36

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

     37MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36    (1) 256K x 36

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

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36        NONE

     49MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 256K x 36

     52MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36     (1) 1M x 36

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

            CACHE CONFIGURATION

     Size          Bank 0          TAG

     64KB        (8) 8K x 8    (1) 8K x 8

     256KB       (8) 32K x 8   (1) 32K x 8

  CACHE JUMPER CONFIGURATION

   Size      E12        E14

   64KB      Open      Open

  256KB     Closed    Closed

                          CPU TYPE CONFIGURATION

       Type            E3        E4        E5        E6          E13

   80486SX PQFP      2 & 3      2 & 3     2 & 3     1 & 2        Open

    80486SX PGA      1 & 2      1 & 2     1 & 2     1 & 2       Closed

      80486DX        2 & 3      2 & 3     2 & 3     1 & 2       Closed

    ODP80486SX       2 & 3      2 & 3     2 & 3     1 & 2       Closed

      Pentium        2 & 3      1 & 2     2 & 3     1 & 2       Closed
     Overdrive

  Note: Jumper E6 set with pins 1 & 2 closed enables write through cache,
  pins 2 & 3 closed enabled write back cache. If write back is enabled,
  and pins 2 & 3 closed on jumper E1, write back mode is enabled for SL1.

  CPU SPEED CONFIGURATION

    Speed          E15

    25MHz         Closed

    33MHz          Open

                  VIDEO MEMORY CONFIGURATION

        Size                Bank 0               Bank 1

        512KB            (4) 256K x 4             NONE

         1MB             (4) 256K x 4         (4) 256K x 4

  Note: Bank O is factory installed and is not configurable.

