
MICRO-STAR INTERNATIONAL CO., LTD.

MS-4136

Processor   CX486S/SL80486SX/80486SX/AM486DX/CX486DX/SL80486DX/80486DX/
            SL80486DX2/80486DX2/Pentium Overdrive
Processor   25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set    SIS
Max.        128MB
Onboard
DRAM
Cache       128/256KB
BIOS        Phoenix
Dimensions  330mm x 218mm
I/O Options Floppy drive interface, game port, green PC connector, IDE
            interface, parallel port, PS/2 mouse port, serial ports (2),
            VGA feature connector, VGA port, riser slot
NPU Options None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  PS/2 mouse port          CN1         Power LED &          JFP1 pins 1 -
                                       keylock                   5

  Serial port 1            CN2         Speaker              JFP1 pins 6 -
                                                                 10

  Serial port 2            CN3         Turbo LED           JFP1 pins 12 -
                                                                 13

  Parallel port            CN4         Turbo switch        JFP1 pins 15 -
                                                                 17

  VGA port                 CN5         Reset switch        JFP1 pins 19 -
                                                                 20

  Floppy drive             CN6         IDE interface LED   JFP1 pins 21 &
  interface                                                      22

  IDE interface            CN7         Green PC connector       JG1
                                       (monitor)

  VGA feature              CN8         Green PC LED             JG2
  connector

  Game interface           CN9         Green PC connector       JG3

  External battery          JB         Riser Card               SL1

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Serial port 1 COM select COM1          JCOM1          pins 1 & 2
      3F8                                                     closed

      Serial port 1 COM select COM3          JCOM1          pins 2 & 3
      3E8                                                     closed

     Serial port 1 COM select COM2          JCOM2          pins 1 & 2
      2F8                                                     closed

      Serial port 1 COM select COM4          JCOM2          pins 2 & 3
      2E8                                                     closed

     Floppy drive interface enabled         JFDD           pins 1 & 2
                                                              closed

      Floppy drive interface disabled        JFDD           pins 2 & 3
                                                              closed

     Game interface enabled                 JGAME          pins 1 & 2
                                                              closed

      Game interface disabled                JGAME          pins 2 & 3
                                                              closed

     IDE interface enabled                  JHDD           pins 1 & 2
                                                              closed

      IDE interface disabled                 JHDD           pins 2 & 3
                                                              closed

     Parallel port LPT select LPT1          JPP1           pins 1 & 2
      378                                                     closed

      Parallel port LPT select LPT2          JPP1           pins 2 & 3
      278                                                     closed

     Parallel port IRQ select IRQ7          JPP2           pins 1 & 2
                                                              closed

      Parallel port IRQ select IRQ5          JPP2           pins 2 & 3
                                                              closed

     On board VGA enabled                   JVGA           pins 1 & 2
                                                              closed

      On board VGA disabled                  JVGA           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2          Bank 3

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

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

     2MB         (1) 512K x       NONE           NONE            NONE
                    36

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

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

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

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

     6MB         (1) 256K x     (1) 256K x    (1) 1M x 36        NONE
                    36             36

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

     8MB         (1) 256K x     (1) 256K x     (1) 512K x    (1) 1M x 36
                    36             36             36

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

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

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

     10MB         (1) 256K x     (1) 256K x    (1) 1M x 36   (1) 1M x 36
                     36             36

     12MB         (1) 512K x     (1) 512K x    (1) 1M x 36   (1) 1M x 36
                     36             36

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

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

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

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

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

     18MB         (1) 256K x     (1) 256K x    (1) 4M x 36       NONE
                     36             36

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

     20MB         (1) 512K x     (1) 512K x    (1) 4M x 36       NONE
                     36             36

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

     24MB         (1) 512K x     (1) 512K x    (1) 1M x 36   (1) 4M x 36
                     36             36

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

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

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

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

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

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

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

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

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

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

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

     48MB        (1) 4M 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

     64MB        (1) 16M x 36      NONE           NONE           NONE

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

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

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

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

     68MB        (1) 1M x 36    (1) 8M x 36    (1) 8M x 36       NONE

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

     72MB        (1) 1M x 36    (1) 1M x 36    (1) 8M x 36   (1) 8M x 36

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

     80MB        (1) 4M x 36    (1) 8M x 36    (1) 8M x 36       NONE

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

     96MB        (1) 4M x 36    (1) 4M x 36    (1) 8M x 36   (1) 8M x 36

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

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

     128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36   (1) 8M x 36

                            CACHE CONFIGURATION

       Size             Bank 0           Bank 1               TAG

      128KB          (4) 32K x 8          NONE          (1) 8K or (1) 16K
                                                          (1) 32K x 8

      256KB          (4) 64K x 8          NONE          (1) 16K (1) 32K x
                                                               8

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

                        CACHE JUMPER CONFIGURATION

      Size               JS1               JS2                 JS3

      128KB           pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

      256KB           pins 2 & 3        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

      256KB           pins 2 & 3        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

                        CPU TYPE CONFIGURATION

               Type                               JC1

              80486SX               pins 2 & 3, 5 & 6, 7 & 8 closed

              80486DX               pins 2 & 5, 4 & 7, 6 & 9 closed

             80486DX2               pins 2 & 5, 4 & 7, 6 & 9 closed

         Pentium Overdrive          pins 1 & 4, 2 & 5, 6 & 9 closed

                          CPU TYPE CONFIGURATION

       Type            JC2           JC3           JC4            JC5

      Cyrix         2 & 3, 5 &    2 & 3, 5 &    2 & 3, 5 &     2 & 3, 5 &
                        6             6             6              6

       AMD            6 & 7         6 & 7         6 & 7          6 & 7

  Intel S-series    1 & 2, 6 &    1 & 2, 6 &    1 & 2, 6 &     1 & 2, 6 &
                        7             7             7              7

      Intel           6 & 7         6 & 7         6 & 7          6 & 7

  Note: Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION

        Type                 JC6                  JC7

        Cyrix          pins 1 & 2 closed   pins 2 & 3 closed

         AMD           pins 2 & 3 closed   pins 1 & 2 closed

        Intel          pins 2 & 3 closed   pins 1 & 2 closed

                          CPU SPEED CONFIGURATION

     Speed           JK1            JK2           JK3            JK4

     25MHz        pins 2 & 3      Closed         Closed         Closed
                   closed

     33MHz        pins 1 & 2      Closed          Open          Closed
                   closed

     40MHz        pins 1 & 2      Closed         Closed          Open
                   closed

    50iMHz        pins 2 & 3      Closed         Closed         Closed
                   closed

     50MHz        pins 1 & 2       Open          Closed         Closed
                   closed

    66iMHz        pins 1 & 2      Closed          Open          Closed
                   closed

               CPU VOLTAGE CONFIGURATION

          Voltage                      JP24

            3.3v             pins 7 & 8, 9 &10 closed

             5v              pins 1 & 2, 3 & 4 closed

                        VRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

      512KB       (1) 256K x 16         NONE            NONE

       1MB        (1) 256K x 16    (1) 256K x 16        NONE

       2MB        (1) 256K x 16    (1) 256K x 16    (2) 256K x 16

