
UNIDENTIFIED

PM486PU-S3 PCI

Processor  CX486SX/UMC486SX/80486SX/CX486DX/AM486DX/80486DX/CX486DX2/
           AM486DX2/80486DX2/CX486DX4/AM486DX4/AM486DX4(WB)/80486DX4/
           P24D/Pentium Overdrive/CXM1
Processor  20/25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)MHz
Chip Set   UMC
Max.       64MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       Unidentified
Dimensions 254mm x 218mm
I/O        32-bit PCI slots (3), green PC connector, floppy drive interface,
Options    IDE interfaces (2), parallel port, serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery           CN1       Green PC connector         JP1

  Serial port 2              CN2       Turbo switch               JP2

  Serial port 1              CN3       Turbo LED                  JP3

  Parallel port              CN4       Reset switch               JP4

  Floppy drive interface     CN5       Speaker                    JP5

  IDE interface 2            CN6       Power LED & keylock        JP6

  IDE interface 1            CN7       32-bit PCI slots         PC1 - PC3

  IDE interface LED           J1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             J20              N/A
      alter

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         NONE

       2MB        (1) 256K x 36    (1) 256K x 36

       2MB        (1) 512K x 36         NONE

       3MB        (1) 256K x 36    (1) 512K x 36

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

       4MB         (1) 1M x 36          NONE

       5MB        (1) 256K x 36     (1) 1M x 36

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

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

       8MB         (1) 2M x 36          NONE

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

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

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

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

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

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

      32MB         (1) 8M x 36          NONE

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

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

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

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

                           CACHE CONFIGURATION

          Size                    Bank 0                    TAG

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

          256KB                (4) 64K x 8              (1) 32K x 8

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

               CACHE JUMPER CONFIGURATION

            Size                        J8

           128KB                       Open

           256KB                 pins 1 & 2 closed

           512KB             pins 1 & 2, 3 & 4 closed

                          CPU TYPE CONFIGURATION

      Type           J2        J3         J5           J6          J7

     CX486SX       2 & 3      1 & 2      Open       1 & 2, 3      3 & 4
                                                      & 4

    UMC486SX       1 & 2      2 & 3      Open         Open        1 & 2

     80486SX       1 & 2      1 & 2      Open       2 & 3, 4      3 & 4
                                                      & 5

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

     AM486DX       1 & 2      2 & 3      Open         Open        1 & 2

     80486DX       1 & 2      1 & 2      Open       2 & 3, 4      3 & 4
                                                      & 5

    CX486DX2       2 & 3      1 & 2      Open       1 & 2, 3      3 & 4
                                                      & 4

    AM486DX2       1 & 2      2 & 3      2 & 3        Open        1 & 2

    80486DX2       1 & 2      1 & 2      Open       2 & 3, 4      3 & 4
                                                      & 5

    CX486DX4       2 & 3      1 & 2      Open       1 & 2, 3      3 & 4
                                                      & 4

    AM486DX4       1 & 2      2 & 3      Open         Open        1 & 2

  AM486DX4 (WB)    1 & 2      2 & 3      2 & 3        Open        1 & 2

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

      P24D         1 & 2      1 & 2      Open       2 & 3, 4      3 & 4
                                                      & 5

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

      CXM1         1 & 2      1 & 2      Open       2 & 3, 4      3 & 4
                                                      & 5

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type          J9        J10         J12         J13          J14

    CX486SX       Open      2 & 3       Open         Open         Open

   UMC486SX       1 & 2,    3 & 4       Open         Open         Open
                  3 & 4

    80486SX       Open       Open       Open         Open         Open

    CX486DX       3 & 4     2 & 3       Open         Open         Open

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

    80486DX       3 & 4      Open       Open         Open         Open

   CX486DX2       3 & 4     2 & 3       Open         Open         Open

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

   80486DX2       3 & 4      Open       Open         Open         Open

   CX486DX4       3 & 4     2 & 3       Open         Open         Open

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

    AM486DX4      1 & 2,    3 & 4       Open         Open         Open
     (WB)         3 & 4

   80486DX4       3 & 4      Open       Open         Open         Open

     P24D         3 & 4      Open      Closed       Closed       Closed

     P24T         2 & 3     1 & 2       Open         Open         Open

     CXM1         3 & 4      Open      Closed       Closed       Closed

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type         J15        J16       J17      J18      J19       J21

    CX486SX       Open      2 & 3     1 & 2     1 & 2   2 & 3     2 & 3

   UMC486SX       Open      Open      Open      2 & 3    Open     2 & 3

    80486SX       Open      1 & 2     Open      1 & 2    Open     2 & 3

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

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

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

   CX486DX2       Open      2 & 3     1 & 2     1 & 2   2 & 3    1 & 2, 3
                                                                   & 4

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

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

   CX486DX4       Open      2 & 3     1 & 2     1 & 2   2 & 3    1 & 2, 3
                                                                   & 4

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

    AM486DX4      Open      Open      Open      2 & 3    Open    1 & 2, 3
     (WB)                                                          & 4

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

     P24D         Open      1 & 2     Open      1 & 2    Open    1 & 2, 3
                                                                   & 4

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

     CXM1         Open      1 & 2     Open      1 & 2    Open    1 & 2, 3
                                                                   & 4

  Note: Pins designated should be in the closed position.

                        CPU SPEED CONFIGURATION

      Speed        J24 pins 1 & 2    J24 pins 3 & 4    J24 pins 5 & 6

      20MHz             Open              Open              Open

      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               J11

        3.3v          pins 2 & 3 closed

        3.45v         pins 2 & 3 closed

         4v           pins 2 & 3 closed

         5v           pins 1 & 2 closed

