
DATAEXPERT CORPORATION

EXP8C49

Device Type  Mainboard
Processor    CX486DX2/CX486DX4/CX 5X86
Processor    40/50(internal)/66(internal)/75(internal)100(internal)MHz
Speed
Chip Set     ALI
Video Chip   None
Set
Maximum      64MB
Onboard
Memory
Maximum      None
Video Memory
Cache        128/256/512KB
BIOS         AMI
Dimensions   220mm x 220mm
I/O Options  32-bit PCI slots (3), floppy drive interface, green PC
             connector, IDE interfaces (2), parallel port, PS/2 mouse port,
             serial ports (2)

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 2              CN1       IDE interface LED           J2

  Serial port 1              CN2       Reset switch                J3

  Floppy drive interface     CN3       Turbo switch                J4

  Parallel port              CN4       Turbo LED                   J5

  IDE interface 1            CN5       Power LED & keylock         J6

  IDE interface 2            CN6       Speaker                     J7

  PS/2 mouse port            CN7       Green PC connector         JP15

  External battery            J1       32-bit PCI slots         PC1  PC3

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

      Battery type select external          J1              Closed

      CMOS memory clear                     J1         Pins 1 & 2 closed

     Factory configured - do not           JP4          Unidentified
      alter

      Parallel port IRQ select IRQ7         JP9        Pins 2 & 3 closed

      Parallel port IRQ select IRQ5         JP9        Pins 1 & 2 closed

     Factory configured - do not          JP14          Unidentified
      alter

     Factory configured - do not          JP18          Unidentified
      alter

      Flash BIOS voltage select 12v        JP21        Pins 2 & 3 closed

      Flash BIOS voltage select 5v         JP21        Pins 1 & 2 closed

     Factory configured - do not          JP24          Unidentified
      alter

     Factory configured - do not          JP41          Unidentified
      alter

                           SIMM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

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

     8MB        (1) 2M x 36       None           None          None

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

     12MB       (1) 2M x 36   (1) 1M x 36        None          None

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

     12MB       (1) 1M x 36   (1) 2M x 36        None          None

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

     16MB       (1) 2M x 36   (1) 1M x 36    (1) 1M x 36       None

     16MB       (1) 2M x 36   (1) 2M x 36        None          None

                       SIMM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

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

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

     20MB       (1) 2M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     20MB       (1) 1M x 36   (1) 2M x 36    (1) 2M x 36       None

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

     24MB       (1) 4M x 36   (1) 2M x 36        None          None

     24MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36       None

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

     32MB       (1) 8M x 36       None           None          None

     32MB       (1) 4M x 36   (1) 2M x 36    (1) 2M x 36       None

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

     32MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

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

     40MB       (1) 8M x 36   (1) 1M x 36    (1) 1M x 36       None

     40MB       (1) 8M x 36   (1) 2M x 36        None          None

     40MB       (1) 4M x 36   (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     48MB       (1) 8M x 36   (1) 2M x 36    (1) 2M x 36       None

     48MB       (1) 8M x 36   (1) 4M x 36        None          None

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

     56MB       (1) 8M x 36   (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     56MB       (1) 2M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     64MB       (1) 8M x 36   (1) 4M x 36    (1) 4M x 36       None

     64MB       (1) 8M x 36   (1) 8M x 36        None          None

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

                            CACHE CONFIGURATION

     Size         Bank 0        Bank 1        Bank 2            TAG

   128KB (A)       None          None       (4) 32K x 8     (1) 8K x 8

   128KB (B)     (1) 32K x       None          None         (1) 8K x 8
                    32

   256KB (A)       None          None       (4) 64K x 8   (1) 16K/32K x 8

   256KB (B)     (1) 32K x       None       (4) 32K x 8   (1) 16K/32K x 8
                    32

   256KB (C)     (1) 32K x     (1) 32K x       None       (1) 16K/32K x 8
                    32            32

     512KB         None          None       (4) 128K x      (1) 32K x 8
                                                8

                        CACHE JUMPER CONFIGURATION

     Size          JP17          JP20           JP37            JP42

  128KB (A)        Open          Open         Pins 1 & 2      Pins 1 & 2
                                               closed          closed

  128KB (B)        Open          Open         Pins 1 & 2      Pins 1 & 2
                                               closed          closed

  256KB (A)        Open         Closed        Pins 1 & 2      Pins 2 & 3
                                               closed          closed

  256KB (B)        Open         Closed        Pins 2 & 3      Pins 2 & 3
                                               closed          closed

  256KB (C)        Open         Closed        Pins 2 & 3      Pins 2 & 3
                                               closed          closed

    512KB         Closed        Closed        Pins 1 & 2      Pins 2 & 3
                                               closed          closed

                            CPU SPEED SELECTION

     Speed          JP11           JP12           JP13           JP16

     40MHz          Open          Closed       Pins 2 & 3        Open
                                                 closed

     40MHz          Open          Closed       Pins 1 & 2       Closed
                                                 closed

    50iMHz          Open           Open        Pins 2 & 3        Open
                                                 closed

    66iMHz         Closed         Closed       Pins 2 & 3        Open
                                                 closed

    75iMHz          Open           Open        Pins 2 & 3        Open
                                                 closed

    100iMHz        Closed         Closed       Pins 2 & 3        Open
                                                 closed

  Note: Either setting may be used for 40MHz.

                            CPU TYPE SELECTION

       Type               JP23              JP32               JP35

     CX486DX2          Pins 1 & 2         Pins 2 & 3        Pins 1 & 2
                         closed            closed             closed

     CX486DX4          Pins 1 & 2         Pins 2 & 3        Pins 1 & 2
                         closed            closed             closed

      CX 5X86          Pins 1 & 2         Pins 1 & 2        Pins 2 & 4
                         closed            closed             closed

                           CPU VOLTAGE SELECTION

                Voltage                               JP29

                   3.3v                         Pins 1 & 2 closed

                  3.45v                        Pins 3 & 4 closed

                   3.6v                         Pins 5 & 6 closed

                    DMA CHANNEL SELECTION

       Channel               JP5                  JP6

          1            Pins 1 & 2 closed   Pins 1 & 2 closed

          3            Pins 2 & 3 closed   Pins 2 & 3 closed

                        INTERNAL KEYBOARD SELECTION

        Setting               JP19            JP39              JP40

         Enabled             Open           Closed            Closed

          Disabled           Closed           Open              Open

