
SILICON STAR INTERNATIONAL, INC.

PW4/PW4T REV. 1.3

Processor  80486SX/SL80486SX/CX486M7/AM486DX/80486DX/SL80486DX/CX486DX2/
           AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/100(internal)MHz
Speed
Chip Set   Unidentifed
Max.       192MB
Onboard
DRAM
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  External battery             J1       Power LED & keylock       JW1

  Green PC connector          JP47      Speaker                   JW2

  Green PC connector          JP48      Turbo LED                 JW3

  Green PC connector          JP49      Turbo switch              JW4

  Green PC connector          JP50      Reset switch              JW5

  Green PC connector          JP51      32-bit VESA local      SL1 - SL3
                                        bus slots

  Green PC connector          JP52

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP5             Closed

      Monitor type select monochrome          JP5              Open

     Factory configured - do not             JP6              Open
      alter

     Factory configured - do not             JP41             Open
      alter

     CMOS memory normal operation            JP67          pins 1 & 2
                                                              closed

      CMOS memory clear                       JP67          pins 2 & 3
                                                              closed

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB         (4) 256K x 9         NONE            NONE

       1MB             NONE        (1) 256K x 36        NONE

       1MB             NONE             NONE        (1) 256K x 36

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       2MB             NONE        (1) 256K x 36    (1) 256K x 36

       2MB             NONE        (1) 512K x 36        NONE

       2MB             NONE             NONE        (1) 512K x 36

       3MB         (4) 256K x 9    (1) 512K x 36        NONE

       3MB         (4) 256K x 9    (1) 256K x 36    (1) 256K x 36

       3MB         (4) 256K x 9    (1) 512K x 36        NONE

       3MB             NONE        (1) 256K x 36    (1) 512K x 36

       4MB          (4) 1M x 9          NONE            NONE

       4MB             NONE         (1) 1M x 36         NONE

       4MB             NONE        (1) 512K x 36    (1) 512K x 36

       4MB             NONE             NONE         (1) 1M x 36

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

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

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

       5MB         (4) 256K x 9    (1) 512K x 36    (1) 512K x 36

       5MB             NONE        (1) 256K x 36     (1) 1M x 36

       6MB          (4) 1M x 9     (1) 512K x 36        NONE

       6MB          (4) 1M x 9     (1) 256K x 36    (1) 256K x 36

       6MB         (4) 256K x 9    (1) 256K x 36     (1) 1M x 36

       6MB          (4) 1M x 9     (1) 512K x 36        NONE

       6MB             NONE         (1) 1M x 36     (1) 512K x 36

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

       8MB          (4) 1M x 9     (1) 512K x 36    (1) 512K x 36

       8MB             NONE         (1) 2M x 36         NONE

       8MB             NONE             NONE         (1) 2M x 36

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

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

       9MB         (4) 256K x 9     (1) 2M x 36         NONE

      11MB         (4) 256K x 9    (1) 512K x 36     (1) 2M x 36

      12MB          (4) 1M x 9      (1) 2M x 36         NONE

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

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

      12MB          (4) 1M x 9      (1) 2M x 36         NONE

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

      16MB          (4) 4M x 9          NONE            NONE

      16MB             NONE         (1) 4M x 36         NONE

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

      16MB             NONE             NONE         (1) 4M x 36

      17MB         (4) 256K x 9     (1) 4M x 36         NONE

      17MB          (4) 4M x 9     (1) 256K x 36        NONE

      17MB         (4) 256K x 9     (1) 2M x 36      (1) 2M x 36

      17MB             NONE        (1) 256K x 36     (1) 4M x 36

      18MB          (4) 4M x 9     (1) 512K x 36        NONE

      18MB          (4) 4M x 9     (1) 256K x 36    (1) 256K x 36

      18MB         (4) 256K x 9    (1) 256K x 36     (1) 4M x 36

      18MB          (4) 4M x 9     (1) 512K x 36        NONE

      18MB             NONE         (1) 4M x 36     (1) 512K x 36

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

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

      20MB          (4) 1M x 9      (1) 2M x 36      (1) 2M x 36

      20MB          (4) 4M x 9     (1) 512K x 36    (1) 512K x 36

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

      21MB          (4) 4M x 9     (1) 256K x 36     (1) 1M x 36

      21MB          (4) 1M x 9     (1) 256K x 36     (1) 4M x 36

      21MB         (4) 256K x 9     (1) 1M x 36      (1) 4M x 36

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

      24MB          (4) 4M x 9      (1) 1M x 36      (1) 1M x 36

      24MB          (4) 1M x 9      (1) 1M x 36      (1) 4M x 36

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

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

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

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

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

      32MB             NONE         (1) 8M x 36         NONE

      32MB             NONE             NONE         (1) 8M x 36

      33MB         (4) 256K x 9     (1) 8M x 36         NONE

      33MB          (4) 4M x 9     (1) 256K x 36     (1) 4M x 36

      33MB         (4) 256K x 9     (1) 4M x 36      (1) 4M x 36

      33MB         (4) 256K x 9     (1) 8M x 36         NONE

      33MB             NONE        (1) 256K x 36     (1) 8M x 36

      34MB             NONE        (1) 512K x 36     (1) 8M x 36

      35MB         (4) 256K x 9    (1) 512K x 36     (1) 8M x 36

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

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

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

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

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

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

      38MB          (4) 1M x 9     (1) 512K x 36     (1) 8M x 36

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

      41MB         (4) 256K x 9     (1) 2M x 36      (1) 8M x 36

      44MB          (4) 1M x 9      (1) 2M x 36      (1) 8M x 36

      48MB          (4) 4M x 9      (1) 8M x 36         NONE

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

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

      56MB          (4) 4M x 9      (1) 2M x 36      (1) 8M x 36

      64MB         (4) 16M x 9          NONE            NONE

      64MB             NONE         (1) 16M x 36        NONE

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

      64MB             NONE             NONE        (1) 16M x 36

      65MB         (4) 256K x 9     (1) 16M x 36        NONE

      65MB         (4) 16M x 9     (1) 256K x 36        NONE

      65MB         (4) 16M x 9     (1) 256K x 36        NONE

      65MB         (4) 256K x 9     (1) 8M x 36      (1) 8M x 36

      65MB             NONE        (1) 256K x 36    (1) 16M x 36

      66MB         (4) 16M x 9     (1) 512K x 36        NONE

      66MB         (4) 16M x 9     (1) 256K x 36    (1) 256K x 36

      66MB         (4) 256K x 9    (1) 256K x 36    (1) 16M x 36

      66MB         (4) 16M x 9     (1) 512K x 36        NONE

      66MB             NONE         (1) 16M x 36    (1) 512K x 36

      68MB          (4) 1M x 9      (1) 16M x 36        NONE

      68MB         (4) 16M x 9      (1) 1M x 36         NONE

      68MB          (4) 1M x 9      (1) 8M x 36      (1) 8M x 36

      68MB         (4) 16M x 9     (1) 512K x 36    (1) 512K x 36

      68MB             NONE         (1) 1M x 36     (1) 16M x 36

      69MB         (4) 16M x 9     (1) 256K x 36     (1) 1M x 36

      69MB          (4) 1M x 9     (1) 256K x 36    (1) 16M x 36

      69MB         (4) 256K x 9     (1) 1M x 36     (1) 16M x 36

      72MB         (4) 16M x 9      (1) 2M x 36         NONE

      72MB         (4) 16M x 9      (1) 1M x 36      (1) 1M x 36

      72MB          (4) 1M x 9      (1) 1M x 36     (1) 16M x 36

      72MB         (4) 16M x 9      (1) 2M x 36         NONE

      72MB             NONE         (1) 16M x 36     (1) 2M x 36

      74MB         (4) 16M x 9     (1) 512K x 36     (1) 2M x 36

      80MB          (4) 4M x 9      (1) 16M x 36        NONE

      80MB         (4) 16M x 9      (1) 4M x 36         NONE

      80MB         (4) 16M x 9      (1) 2M x 36      (1) 2M x 36

      81MB         (4) 16M x 9     (1) 256K x 36     (1) 4M x 36

      81MB          (4) 4M x 9     (1) 256K x 36    (1) 16M x 36

      81MB         (4) 256K x 9     (1) 4M x 36     (1) 16M x 36

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

      84MB         (4) 16M x 9      (1) 1M x 36      (1) 4M x 36

      84MB          (4) 4M x 9      (1) 1M x 36     (1) 16M x 36

      84MB          (4) 1M x 9      (1) 4M x 36     (1) 16M x 36

      96MB         (4) 16M x 9      (1) 8M x 36         NONE

      96MB          (4) 4M x 9      (1) 4M x 36     (1) 16M x 36

      96MB             NONE         (1) 16M x 36     (1) 8M x 36

      128MB        (4) 16M x 9      (1) 16M x 36        NONE

      128MB        (4) 16M x 9      (1) 8M x 36      (1) 8M x 36

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

      129MB        (4) 16M x 9     (1) 256K x 36    (1) 16M x 36

      129MB        (4) 256K x 9     (1) 16M x 36    (1) 16M x 36

      132MB        (4) 16M x 9      (1) 1M x 36     (1) 16M x 36

      132MB         (4) 1M x 9      (1) 16M x 36    (1) 16M x 36

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

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

      192MB        (4) 16M x 9      (1) 16M x 36    (1) 16M x 36

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

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

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

     256KB        (4) 64K x 8        NONE        (1) 64K x 8

     512KB        (4) 64K x 8     (4) 64K x 8    (1) 64K x 8

     512KB       (4) 128K x 8        NONE        (1) 128K x 8

      1MB        (4) 128K x 8    (4) 128K x 8    (1) 128K x 8

                        CACHE JUMPER CONFIGURATION

    Size         JP60            JP61           JP62            JPX3

   128KB       pins 2 & 3     pins 1 & 2      pins 2 & 3     pins 9 - 16
                closed          closed         closed          closed

   256KB       pins 2 & 3     pins 1 & 2      pins 2 & 3     pins 13 - 20
                closed          closed         closed          closed

   256KB       pins 2 & 3     pins 2 & 3      pins 2 & 3     pins 3 - 10
                closed          closed         closed          closed

   512KB       pins 2 & 3     pins 1 & 2      pins 2 & 3      pins 1 - 8
                closed          closed         closed          closed

   512KB       pins 2 & 3     pins 1 & 2      pins 2 & 3     pins 3 - 10
                closed          closed         closed          closed

    1MB        pins 1 & 2     pins 1 & 2      pins 1 & 2      pins 1 - 8
                closed          closed         closed          closed

                          CPU TYPE CONFIGURATION

       Type            JP15          JP16          JP17          JP37

      80486SX          Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

     SL80486SX         Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

      CX486M7          Open        pins 1 & 2   pins 1 & 2       Open
                                    closed        closed

      AM486DX          Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

      80486DX          Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

     SL80486DX         Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

    CX486DX2-50        Open        pins 2 & 3   pins 2 & 3       1 & 2
                                    closed        closed

    CX486DX2-66        Open        pins 1 & 2   pins 1 & 2       Open
                                    closed        closed

    CX486DX2-80        Open        pins 1 & 2   pins 1 & 2       Open
                                    closed        closed

  AM486DX2 (3.45v)   pins 2 & 3    pins 2 & 3   pins 2 & 3       Open
                      closed        closed        closed

     AM486DX2          Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

     80486DX2          Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

    SL80486DX2         Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

     AM486DX4          Open        pins 1 & 2   pins 1 & 2       Open
                                    closed        closed

    80486DX4-75        Open        pins 2 & 3   pins 2 & 3     pins 1 & 2
                                    closed        closed        closed

   80486DX4-100        Open        pins 2 & 3   pins 2 & 3       Open
                                    closed        closed

  Note: DX4 CPU is only available on the PW4T mainboard.

                          CPU TYPE CONFIGURATION

        Type            JP38        JP39        JP40            RN8

      80486SX           Open        Open        Open         Installed

     SL80486SX          Open        Open        Open         Installed

      CX486M7           Open        Open        Open         Installed

      AM486DX           Open        Open        Open         Installed

      80486DX           Open        Open        Open         Installed

     SL80486DX          Open        Open        Open         Installed

    CX486DX2-50         Open        Open        Open       Not installed

    CX486DX2-66         Open       1 & 2        Open       Not installed

    CX486DX2-80         Open        Open       1 & 2       Not installed

  AM486DX2 (3.45v)     1 & 2        Open        Open       Not installed

      AM486DX2          Open        Open        Open         Installed

      80486DX2          Open        Open        Open         Installed

     SL80486DX2         Open        Open        Open         Installed

      AM486DX4         1 & 2        Open       1 & 2       Not installed

    80486DX4-75         Open        Open        Open       Not installed

    80486DX4-100       1 & 2        Open       1 & 2       Not installed

            Note: Pins designated should be in the closed position. DX4
            CPU is only available on the PW4T mainboard.

                          CPU TYPE CONFIGURATION

     Type          RN5           RN6           RN7         JP20     JP26

   80486SX          Not       Installed         Not       Closed    1 & 2
                installed                   installed

  SL80486SX         Not       Installed         Not       Closed    1 & 2
                installed                   installed

   CX486M7      Installed         Not       Installed      Open     1 & 2
                              installed

   AM486DX          Not       Installed     Installed      Open     1 & 2
                installed

   80486DX          Not       Installed     Installed      Open     1 & 2
                installed

  SL80486DX         Not       Installed     Installed      Open     1 & 2
                installed

   AM486DX2         Not       Installed     Installed      Open     1 & 2
                installed

   80486DX2         Not       Installed     Installed      Open     1 & 2
                installed

  SL80486DX2        Not       Installed     Installed      Open     1 & 2
                installed

   AM486DX4         Not       Installed     Installed      Open     Open
                installed

   80486DX4         Not       Installed     Installed      Open     Open
                installed

            Note: Pins designated should be in the closed position. DX4
            CPU is only available on the PW4T mainboard.

                      CPU TYPE CONFIGURATION (CONT)

       Type           JP42          JP65          JPX1           JPX2

     80486SX          Open          Open       pins 5 - 12       Open
                                                 closed

    SL80486SX        Closed         Open       pins 5 - 12       Open
                                                 closed

     CX486M7         Closed        Closed      pins 1 - 8     pins 1 - 8
                                                 closed         closed

     AM486DX          Open         Closed      pins 5 - 12       Open
                                                 closed

     80486DX          Open         Closed      pins 5 - 12       Open
                                                 closed

    SL80486DX        Closed        Closed      pins 5 - 12       Open
                                                 closed

     AM486DX2         Open         Closed      pins 5 - 12       Open
                                                 closed

     80486DX2         Open         Closed      pins 5 - 12       Open
                                                 closed

    SL80486DX2       Closed        Closed      pins 5 - 12       Open
                                                 closed

     AM486DX4        Closed        Closed      pins 5 - 12       Open
                                                 closed

     80486DX4        Closed        Closed      pins 5 - 12       Open
                                                 closed

  Note: DX4 CPU is only available on the PW4T mainboard.

  CPU SPEED CONFIGURATION(U30 CLOCK GENERATOR)

   Speed        JP27        JP28         JP29

   20MHz        Open        Open        Closed

   25MHz       Closed       Open        Closed

   33MHz        Open       Closed       Closed

   40MHz       Closed       Open         Open

   50iMHz      Closed       Open        Closed

   66iMHz       Open       Closed       Closed

   75iMHz      Closed       Open        Closed

   80iMHz      Closed       Open         Open

  100iMHz       Open       Closed       Closed

  CPU SPEED CONFIGURATION(U31 CLOCK GENERATOR)

   Speed        JP27        JP28         JP29

   20MHz        Open        Open         Open

   25MHz        Open        Open        Closed

   33MHz       Closed      Closed       Closed

   40MHz        Open       Closed       Closed

   50iMHz       Open        Open        Closed

   66iMHz      Closed      Closed       Closed

   75iMHz       Open        Open        Closed

   80iMHz       Open       Closed       Closed

  100iMHz      Closed      Closed       Closed

  VESA WAIT STATE CONFIGURATION

   Wait states          JP9

  0 wait states        Open

  1 wait state        Closed

  BUS SPEED CONFIGURATION

  CPU speed        JP10

   <= 33MHz        Open

   > 33MHz        Closed

