
MICRO-STAR INTERNATIONAL CO., LTD.

MS-4145

Processor   80486SX/SL80486SX/AM486DX/(SL)AM486DX/80486DX/
            SL80486DX/CX486DX2/IBM486DX2/SGS486DX2/TI486DX2/
            AM486DX2/ODP486DX2/80486DX2/SL80486DX2/SL80486DX4/
            P24D/P24T/CX5X86/(SL)AM X5
Processor   25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/
Speed       100(internal)/120(internal)/133(internal)/160(internal)MHz
Chip Set    ALI
Video Chip  None
Set
Maximum     64MB
Onboard
Memory
Maximum     None
Video
Memory
Cache       128/256/512KB
BIOS        Award
Dimensions  220mm x 220mm
I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces
            (2), parallel port, serial ports (2)
NPU Options None

                                                                   [Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 1            CN1         Green PC LED              JG1

  Serial port 2            CN2         Power LED &           JFP/pins 1 -
                                       keylock                    5

  Floppy drive             CN3         Speaker               JFP/pins 7 -
  interface                                                      10

  Parallel port            CN4         Turbo LED            JFP/pins 12 &
                                                                 13

  IDE interface 2          CN5         Turbo switch         JFP/pins 15 -
                                                                 17

  IDE interface 1          CN6         Reset switch         JFP/pins 19 &
                                                                 20

  Chassis fan power        FAN         IDE interface LED    JFP/pins 21 &
                                                                 22

  External battery         JBAT        32-bit PCI slots       PC1  PC3

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Battery type select internal         JBAT        Pins 2 & 3 closed

      Battery type select external         JBAT             Closed

     Parallel port address select         JIRQ        Pins 1 & 2 closed
      378

      Parallel port address select         JIRQ        Pins 2 & 3 closed
      278

     Factory configured  do not           JS3          Unidentified
      alter

                    DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      4MB       (1) 1M x 36        None          None

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

      8MB       (1) 2M x 36        None          None

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

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

     16MB       (1) 4M x 36        None          None

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

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

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

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

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

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

     32MB       (1) 8M x 36        None          None

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

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

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

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

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

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

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

     64MB       (1) 4M x 36    (1) 8M x 36    (1) 4M x 36

                            CACHE CONFIGURATION

       Size            Bank 0          Bank 1                TAG

      128KB         (4) 32K x 8         None         (1) 8K/16K/32K x 8

    256KB (A)       (4) 32K x 8      (4) 32K x 8     (1) 8K/16K/32K x 8

    256KB (B)       (2) 64K x 32        None         (1) 8K/16K/32K x 8

      Note: Board also accepts 512KB cache. The chip sizes and jumper
                        settings are unidentified.

                        CACHE JUMPER CONFIGURATION

      Size               JS1               JS2                 JS4

      128KB           Pins 1 & 2        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

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

    256KB (B)         Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

                            CPU SPEED SELECTION

          Speed                    JK1                      JK2

          25MHz                    Open              Pins 1 & 2 closed

          33MHz              Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

          40MHz             Pins 1 & 2 closed         Pins 2 & 3, 4 & 5
                                                           closed

         50iMHz                    Open              Pins 1 & 2 closed

         66iMHz              Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

         75iMHz                    Open              Pins 1 & 2 closed

         80iMHz             Pins 1 & 2 closed         Pins 2 & 3, 4 & 5
                                                           closed

         100iMHz             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

         120iMHz            Pins 1 & 2 closed         Pins 2 & 3, 4 & 5
                                                           closed

         133iMHz             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

         160iMHz            Pins 1 & 2 closed         Pins 2 & 3, 4 & 5
                                                           closed

                            CPU TYPE SELECTION

      Type          JC1          JC2          JC3        JC4        JC5

    80486SX        Open         Open         Open       1 & 2      2 & 3

   SL80486SX       Open         Open         Open       1 & 2      2 & 3

    AM486DX        Open         Open         Open       2 & 3      1 & 2

  (SL)AM486DX      Open         Open         Open       2 & 3      1 & 2

    80486DX        Open         Open         Open       2 & 3      1 & 2

   SL80486DX       Open         Open         Open       2 & 3      1 & 2

    CX486DX2       Open        Closed        Open       2 & 3      1 & 2

   IBM486DX2       Open        Closed        Open       2 & 3      1 & 2

   SGS486DX2       Open        Closed        Open       2 & 3      1 & 2

    TI486DX2       Open        Closed        Open       2 & 3      1 & 2

    AM486DX2       Open         Open         Open       2 & 3      1 & 2

   ODP486DX2       Open         Open         Open       2 & 3      1 & 2

    80486DX2       Open         Open         Open       2 & 3      1 & 2

   SL80486DX2      Open         Open         Open       2 & 3      1 & 2

   SL80486DX4      Open         Open         Open       2 & 3      1 & 2

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

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

     CX5X86       1 & 2, 3      Open         Open       2 & 3      1 & 2
                    & 4

   (SL)AM X5      1 & 2, 3      Open         Open       2 & 3      1 & 2
                    & 4

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

        Type               R1                R2                 R2

      80486SX          Pins 1  10      Not installed     Not installed
                         closed

     SL80486SX         Pins 3  13      Not installed     Not installed
                         closed

      AM486DX          Pins 1  10      Not installed     Not installed
                         closed

    (SL)AM486DX        Pins 1  10      Not installed     Not installed
                         closed

      80486DX          Pins 1  10      Not installed     Not installed
                         closed

     SL80486DX         Pins 3  13      Not installed     Not installed
                         closed

      CX486DX2          Installed       Not installed     Not installed

     IBM486DX2          Installed       Not installed     Not installed

     SGS486DX2          Installed       Not installed     Not installed

      TI486DX2          Installed       Not installed     Not installed

      AM486DX2         Pins 1  10      Not installed     Not installed
                         closed

     ODP486DX2         Pins 3  13      Not installed     Not installed
                         closed

      80486DX2         Pins 1  10      Not installed     Not installed
                         closed

     SL80486DX2        Pins 3  13      Not installed     Not installed
                         closed

     SL80486DX4        Pins 3  13      Not installed     Not installed
                         closed

        P24D           Pins 5  14      Not installed     Not installed
                         closed

        P24T           Pins 5  14      Not installed     Not installed
                         closed

       CX5X86          Pins 3  13      Not installed     Not installed
                         closed

     (SL)AM X5         Pins 5  14      Not installed     Not installed
                         closed

                           CPU VOLTAGE SELECTION

         Voltage                    JP1                     JV1

             3v                   Open                     Open

              4v                  Closed                    Open

              5v                   Open            Pins 1 & 2, 3 & 4, 5 &
                                                          6 closed

                    DMA CHANNEL SELECTION

       Channel               JP3                  JP4

          1            Pins 2 & 3 closed   Pins 2 & 3 closed

          3            Pins 1 & 2 closed   Pins 1 & 2 closed

