
UNIDENTIFIED

F4DXL-UC4

Processor  UMCU5/80486SX/IBM486DX/CX486DX/AM486DX/80486DX/IBM486DX2/
           CX486DX2/AM486DX2/80486DX2/IBM486DX4/CX486DX4/AM486DX4/
           80486DX4/P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)MHz
Chip Set   UMC
Max.       144MB
Onboard
DRAM
Cache      64/128/256KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  Turbo LED                    D1       Turbo switch              JP27

  External battery            JP1       Speaker                   JP28

  Green PC LED                JP24      Power LED & keylock       JP29

  Green PC connector          JP25      32-bit VESA local      SL1 - SL3
                                        bus slots

  Reset switch                JP26

  Note: The location of D1 is unidentified.

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     CMOS memory normal operation            JP1           Pins 2 & 3
                                                              closed

      CMOS memory clear                       JP1           Pins 3 & 4
                                                              closed

                      DRAM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      1MB            None            None        (4) 256K x 9

      4MB            None            None         (4) 1M x 9

      4MB         (1) 1M x 36        None            None

      5MB         (1) 1M x 36        None        (4) 256K x 9

      8MB         (1) 1M x 36        None         (4) 1M x 9

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

      8MB         (1) 2M x 36        None            None

      9MB         (1) 1M x 36     (1) 1M x 36    (4) 256K x 9

      12MB        (1) 1M x 36     (1) 1M x 36     (4) 1M x 9

      16MB           None            None         (4) 4M x 9

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

      16MB        (1) 4M x 36        None            None

      20MB        (1) 1M x 36        None         (4) 4M x 9

      24MB        (1) 2M x 36        None         (4) 4M x 9

      32MB        (1) 2M x 36     (1) 2M x 36     (4) 4M x 9

      32MB        (1) 4M x 36        None         (4) 4M x 9

      32MB        (1) 8M x 36        None            None

      48MB        (1) 4M x 36     (1) 4M x 36     (4) 4M x 9

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

      64MB       (1) 16M x 36        None            None

     128MB       (1) 16M x 36    (1) 16M x 36        None

     144MB       (1) 16M x 36    (1) 16M x 36     (4) 4M x 9

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

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

   256KB (A)    (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

   256KB (B)    (4) 64K x 8        None       (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

    Size         JP7            JP8             JP9             JP10

    64KB         Open          Open            Open           Pins 2 & 3
                                                               closed

   128KB         Open         Closed         Pins 1 & 2       Pins 1 & 2
                                              closed           closed

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

  256KB (B)     Closed        Closed       Pins 1 & 2, 3      Pins 1 & 2
                                            & 4 closed         closed

                          CPU TYPE CONFIGURATION

        Type             JP11          JP12          JP13         JP17

       UMC U5            2 & 3         2 & 3        2 & 3        3 & 4

      80486SX            Open          2 & 3        2 & 3         Open

      IBM486DX         1 & 2, 3 &    1 & 2, 3 &     2 & 3         Open
                           4         4, 5 & 6

      CX486DX          1 & 2, 3 &    1 & 2, 3 &     2 & 3         Open
                           4         4, 5 & 6

      AM486DX            Open          2 & 3      1 & 2, 3 &     1 & 2
                                                      4

      80486DX            Open          2 & 3      1 & 2, 3 &     1 & 2
                                                      4

     IBM486DX2         1 & 2, 3 &    1 & 2, 3 &   1 & 2, 3 &     1 & 2
                       4, 5 & 6      4, 5 & 6         4

      CX486DX2         1 & 2, 3 &    1 & 2, 3 &   1 & 2, 3 &     1 & 2
                       4, 5 & 6      4, 5 & 6         4

      AM486DX2           Open          2 & 3      1 & 2, 3 &     1 & 2
                                                      4

    AM486DX2-80          2 & 3         2 & 3      1 & 2, 3 &   1 & 2, 3 &
                                                      4            4

      80486DX2           Open          2 & 3      1 & 2, 3 &     1 & 2
                                                      4

  80486DX2-66 (OD)     1 & 2, 4 &    1 & 2, 4 &   1 & 2, 3 &     1 & 2
                           5             5            4

     IBM486DX4         1 & 2, 3 &    1 & 2, 3 &   1 & 2, 3 &     1 & 2
                       4, 5 & 6      4, 5 & 6         4

      CX486DX4         1 & 2, 3 &    1 & 2, 3 &   1 & 2, 3 &     1 & 2
                       4, 5 & 6      4, 5 & 6         4

      AM486DX4           2 & 3         2 & 3      1 & 2, 3 &   1 & 2, 3 &
                                                      4            4

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

        P24T             1 & 2         1 & 2      1 & 2, 3 &     2 & 3
                                                      4

            Note: Pins designated should be in the closed position. If
            AM486DX2-80 CPU is used, jumper JP12 pin 4 & JP20 pin 3 also.

                      CPU TYPE CONFIGURATION (CONT)

          Type                JP18             JP19             JP20

         UMC U5              1 & 2             Open             Open

        80486SX               Open             Open             Open

        IBM486DX          2 & 3, 4 & 5     2 & 3, 4 & 5         Open

        CX486DX           2 & 3, 4 & 5     2 & 3, 4 & 5         Open

        AM486DX               Open             Open             Open

        80486DX               Open             Open             Open

       IBM486DX2          2 & 3, 4 & 5        2 & 3             Open

        CX486DX2          2 & 3, 4 & 5        2 & 3             Open

        AM486DX2              Open             Open             Open

      AM486DX2-80            1 & 2             Open            1 & 2

        80486DX2              Open             Open             Open

    80486DX2-66 (OD)      3 & 4, 5 & 6     1 & 2, 3 & 4         Open

       IBM486DX4          2 & 3, 4 & 5        2 & 3             Open

        CX486DX4          2 & 3, 4 & 5        2 & 3             Open

        AM486DX4             1 & 2             Open             Open

        80486DX4             5 & 6         1 & 2, 3 & 4         Open

          P24T               5 & 6         1 & 2, 3 & 4         Open

            Note: Pins designated should be in the closed position. If
            AM486DX2-80 CPU is used, jumper JP12 pin 4 & JP20 pin 3 also.

          CPU SPEED CONFIGURATION

   Speed      JP4        JP5        JP6

   25MHz      Open       Open     Closed

   33MHz     Closed     Closed    Closed

   40MHz      Open      Closed    Closed

  50iMHz      Open       Open     Closed

   50MHz     Closed      Open      Open

  66iMHz     Closed     Closed    Closed

  75iMHz      Open       Open     Closed

  80iMHz      Open      Closed    Closed

  100iMHz    Closed     Closed    Closed

                         CPU VOLTAGE CONFIGURATION

    Voltage          JP14           JP15          JP16           JP23

       3.3v       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2      Closed
                    closed         closed        closed

         4v        Pins 1 & 2    Pins 1 & 2     Pins 1 & 2       Open
                    closed         closed        closed

         5v        Pins 2 & 3    Pins 2 & 3     Pins 2 & 3       Open
                    closed         closed        closed
                    closed         closed        closed
