
DATAEXPERT CORPORATION

AIO4044

Device     Mainboard
Type
Processor  CX486S/80486SX/80487SX/80486DX/80486DX2/80486DX4/P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   OPTI
Video Chip Trident
Set
Maximum    64MB
Onboard
Memory
Maximum    Unidentified
Video
Memory
Cache      128/512KB
BIOS       Award
Dimensions 188mm x 188mm
I/O        Floppy drive interface, IDE interface, parallel port, PS/2 mouse
Options    port, serial ports (2), VGA feature connector, VGA port, riser slot

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  VGA port                     CN1      PS/2 mouse port            CN8

  Parallel port                CN2      Power LED & keylock        J2

  Serial port 2                CN3      Reset switch               J3

  Serial port 1                CN4      Turbo LED                  J4

  VGA feature connector        CN5      Turbo switch               J5

  Floppy drive interface       CN6      Speaker                    J6

  IDE interface                CN7      Riser slot                 SL1

                        USER CONFIGURABLE SETTINGS

             Function                    Label              Position

     Factory configured - do not          J1             Unidentified
      alter

     Factory configured - do not         JP2             Unidentified
      alter

     Factory configured - do not         JP5             Unidentified
      alter

     VGA output select                   JP6                Closed
      interlaced

      VGA output select non               JP6                 Open
      interlaced

     CPU clock speed select              JP10                Open
      <33MHz

      CPU clock speed select              JP10               Closed
      >33MHz

     IDE interface enabled          JP24/pins 5 & 6          Open

      IDE interface disabled         JP24/pins 5 & 6         Closed

     IDE select primary             JP24/pins 7 & 8          Open

      IDE select secondary           JP24/pins7 & 8          Closed

     IDE read prefetch disabled      JP24/pins 9 &          Closed
                                           10

      IDE read prefetch enabled       JP24/pins 9 &           Open
                                           10

                SIMM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (1) 512K x 36         None

       4MB         (1) 1M x 36          None

       4MB        (1) 512K x 36    (1) 512K x 36

       6MB         (1) 1M x 36     (1) 512K x 36

       8MB         (1) 2M x 36          None

       8MB         (1) 1M x 36      (1) 1M x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 2M x 36      (1) 1M x 36

      16MB         (1) 4M x 36          None

            SIMM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

      16MB         (1) 2M x 36      (1) 2M x 36

      18MB         (1) 4M x 36     (1) 512K x 36

      20MB         (1) 4M x 36      (1) 1M x 36

      24MB         (1) 4M x 36      (1) 2M x 36

      32MB         (1) 8M x 36          None

      36MB         (1) 8M x 36      (1) 1M x 36

      40MB         (1) 8M x 36      (1) 2M x 36

      48MB         (1) 8M x 36      (1) 4M x 36

      64MB         (1) 8M x 36      (1) 8M x 36

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     128KB        (4) 32K x 8     (1) 8K x 8

     512KB        (4) 128K x 8   (1) 32K x 8

  CACHE JUMPER CONFIGURATION

   Size      JP28      JP29

  128KB      Open      Open

  512KB     Closed    Closed

                     VIDEO MEMORY CONFIGURATION

  Note: The size and location of the video memory is unidentified.

                 CPU SPEED SELECTION

   Speed      JP13       JP14      JP15       JP16

   25MHz     Closed     Closed    Closed      Open

   33MHz     Closed     Closed     Open       Open

   40MHz      Open      Closed     Open       Open

  50iMHz     Closed     Closed    Closed      Open

   50MHz     Closed      Open      Open       Open

  66iMHz     Closed     Closed     Open       Open

  75iMHz     Closed     Closed    Closed      Open

  100iMHz    Closed     Closed     Open       Open

                            CPU TYPE SELECTION

          Type                     JP25                     JP26

         CX486S             Pins 2 & 3 closed               Open

         80486SX            Pins 2 & 3 closed               Open

         80487SX             Pins 1 & 2, 3 & 4       Pins 2 & 3 closed
                                  closed

         80486DX             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

        80486DX4             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

          P24T               Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

         CPU MULTIPLIER SELECTION

     Multiplier              JP22

         2x           Pins 1 & 2 closed

        2.5x          Pins 2 & 3 closed

         3x                  Open

                 CPU VOLTAGE SELECTION

          Voltage                      JP27

            3.3v             Pins 2 & 3, 5 & 6 closed

             5v              Pins 1 & 2, 4 & 5 closed

                               VGA SELECTION

           Setting                    JP3                    JP8

            Enabled           Pins 1 & 2 closed      Pins 1 & 2 closed

            Disabled           Pins 2 & 3 closed      Pins 2 & 3 closed

                            IDE MODE SELECTION

         Mode               JP24/pins 1 & 2           JP24/pins 3 & 4

            0                  Closed                    Closed

             1                   Open                     Closed

             2                  Closed                     Open

             3                   Open                      Open

                          IDE FREQUENCY SELECTION

        Frequency            JP24/pins 11 & 12       JP24/pins 13 & 14

            25MHz                  Open                     Open

           33MHz                 Closed                    Open

            40MHz                  Open                    Closed

            50MHz                 Closed                   Closed

