
AST RESEARCH, INC.

ADVANTAGE! PLUS SERIES 486 (MYLEX) (202529-000, 006)

Processor      80486SX/80487SX/ODP486/ODPR486/80486DX/80486DX2
Processor      25/33/50(internal)/66(internal)MHz
Speed
Chip Set       Unidentified
Max. Onboard   32MB
DRAM
Cache          64/256KB
BIOS           AMI
Dimensions     330mm x 218mm
I/O Options    Floppy drive interface, IDE interface, parallel port, serial
               ports (2)
NPU Options    None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel port               J1       Turbo LED                   JP3

  Serial port 2               J2       Reset switch                JP4

  Serial port 1               J3       Speaker                     JP5

  Floppy drive interface      J4       IDE interface LED           JP6

  IDE interface               J5       External battery           JP22

  Power LED & keylock         JP2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

     Factory configured - do not             JP18             Open
      alter

     Parallel port IRQ select IRQ7           JP19          Pins 2 & 3
                                                              closed

      Parallel port IRQ select IRQ5           JP19          Pins 1 & 2
                                                              closed

     On board I/O enabled                    JP20          Pins 1 & 2
                                                              closed

      On board I/O disabled                   JP20          Pins 2 & 3
                                                              closed

     Battery type select internal            JP21          Pins 2 & 3
                                                              closed

      Battery type select external            JP21             Open

      CMOS memory clear                       JP21          Pins 1 & 2
                                                              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) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         None

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

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

                    CACHE CONFIGURATION

     Size          Bank 0          TAG0          TAG1

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

     256KB      (8) 32K x 8    (1) 64K x 1    (1) 32K x 8

           CACHE JUMPER CONFIGURATION

   Size      JP7      JP11      JP12      JP13

   None     Open      Open      Open      Open

   64KB     Open      Open      Open      Open

  256KB    Closed    Closed     Open     Closed

                          CPU TYPE CONFIGURATION

       Type                JP8               JP9               JP10

      80486SX             Open            Pins 2 & 3           Open
                                            closed

      80487SX           Pins 2 & 3        Pins 1 & 2          Closed
                         closed             closed

      odp486            Pins 2 & 3        Pins 1 & 2          Closed
                         closed             closed

      odpR486           Pins 1 & 2        Pins 1 & 2          Closed
                         closed             closed

      80486DX           Pins 1 & 2        Pins 1 & 2          Closed
                         closed             closed

     80486DX2           Pins 1 & 2        Pins 1 & 2          Closed
                         closed             closed

                          CPU SPEED CONFIGURATION

    Speed          JP14           JP15           JP16            JP17

    25MHz        Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 2 & 3
                  closed         closed         closed          closed

    33MHz        Pins 2 & 3     Pins 1 & 2     Pins 1 & 2     Pins 2 & 3
                  closed         closed         closed          closed

    50iMHz       Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 2 & 3
                  closed         closed         closed          closed

    66iMHz       Pins 2 & 3     Pins 1 & 2     Pins 1 & 2     Pins 2 & 3
                  closed         closed         closed          closed

