AST RESEARCH, INC.

Bravo LC 486 (202480-XXX)

Processor               80486SX
Processor Speed         25MHz
Chip Set                AST
Max. Onboard DRAM       64MB
Cache                   None
BIOS                    AST
Dimensions              254mm x 338mm
I/O Options             Bus mouse port, CPU/Cache upgrade module, floppy
                        drive interface, IDE interface, LAN module,
                        parallel port, serial port (2), VGA port
NPU Options             None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  Serial port 2 (COM2)      J12       Floppy drive               J24
                                      interface

  Parallel port             J13       External speaker           J27

  Bus mouse port            J14       Fan power                  J28

  LAN module             J15 & J16    Front panel                J29
                                      switches & LEDs

  Serial port 1 (COM1)      J17       Feature connector          J46

  VGA port                  J18       CPU/Cache upgrade       J50, J51,
                                      module                  J52, J53

  VGA pass-through          J19       IDE interface LED         J100

  IDE interface             J22

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not            E1                 open
      alter

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

  »   Parallel port interrupt                E5              pins 2 & 3
      select IRQ7                                              closed

      Parallel port interrupt                E5              pins 1 & 2
      select IRQ5                                              closed

  »   CMOS memory normal operation           E6                 open

      CMOS memory clear                      E6                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

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

     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

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

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

    VRAM CONFIGURATION

  Size         VRAM

  512KB      (4) 44256