
MICRO-STAR INTERNATIONAL CO., LTD.

MS-5158

Device Type          Mainboard
Processor            CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/Pentium
Processor Speed      90/100/120/133/150/166/200/233MHz
Chip Set             Intel
Video Chip Set       None
Maximum Onboard      256MB (EDO & SDRAM supported)
Memory
Maximum Video Memory None
Cache                512KB
BIOS                 Unidentified
Dimensions           300mm x 186mm
I/O Options          32-bit PCI slots (4), floppy drive interface, green PC
                     connector, IDE interfaces (2), parallel port, PS/2
                     mouse port, serial ports (2), IR connector, USB
                     connectors (2), ATX power connector
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                Location

  ATX power                ATX        Power LED &         JFP1/pins 1 - 5
  connector                           keylock

  Parallel port            CN1        Speaker              JFP1/pins 7 -
                                                                10

  Serial port 2            CN2        Turbo LED            JFP1/pins 12 &
                                                                13

  Serial port 1            CN3        Reset switch         JFP1/pins 19 &
                                                                20

  USB connector 1          CN4        IDE interface LED    JFP1/pins 22 &
                                                                24

  USB connector 2          CN5        Green PC LED              JGL

  PS/2 mouse port          CN6        Green PC                  JGS
                                      connector

  Floppy drive             CN7        IR connector              JIR
  interface

  IDE interface 1          CN8        Wake on modem             JP3
                                      connector

  IDE interface 2          CN9        Soft off power           JRMS1
                                      supply

  CPU fan power           FAN1        Soft off power           JRMS2
                                      supply

  Power fan               FAN2        32-bit PCI slots       PC1  PC4

  Chassis fan power       FAN3

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           C1           Unidentified
      alter

     CMOS memory normal operation         JBAT        Pins 1 & 2 closed

      CMOS memory clear                    JBAT        Pins 2 & 3 closed

      Flash BIOS normal operation           JP2        Pins 1 & 2 closed

      Flash BIOS update enabled             JP2        Pins 2 & 3 closed

              SIMM CONFIGURATION

         Size                  Bank 0

          8MB                (2) 1M x 36

         16MB                (2) 2M x 36

         32MB                (2) 4M x 36

         64MB                (2) 8M x 36

         128MB              (2) 16M x 36

         256MB              (2) 32M x 36

            Note: Board accepts EDO memory.

                    DIMM CONFIGURATION

     Size          Bank 1         Bank 2        Bank 3

      8MB       (1) 1M x 64        None          None

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     24MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 4M x 64        None          None

                  DIMM CONFIGURATION (CONT)

      Size          Bank 1          Bank 2          Bank 3

      32MB        (1) 2M x 64     (1) 2M x 64        None

      40MB        (1) 4M x 64     (1) 1M x 64        None

      48MB        (1) 4M x 64     (1) 2M x 64        None

      48MB        (1) 2M x 64     (1) 2M x 64    (1) 2M x 64

      64MB        (1) 8M x 64        None            None

      64MB        (1) 4M x 64     (1) 4M x 64        None

      72MB        (1) 8M x 64     (1) 1M x 64        None

      80MB        (1) 8M x 64     (1) 2M x 64        None

      96MB        (1) 8M x 64     (1) 4M x 64        None

      96MB        (1) 4M x 64     (1) 4M x 64    (1) 4M x 64

     128MB       (1) 16M x 64        None            None

     128MB        (1) 8M x 64     (1) 8M x 64        None

     136MB       (1) 16M x 64     (1) 1M x 64        None

     144MB       (1) 16M x 64     (1) 2M x 64        None

     160MB       (1) 16M x 64     (1) 4M x 64        None

     192MB       (1) 16M x 64     (1) 8M x 64        None

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     256MB       (1) 32M x 64        None            None

     256MB       (1) 16M x 64    (1) 16M x 64        None

            Note: Board accepts SDRAM memory.

                            CACHE CONFIGURATION

  Note: 512KB cache is factory installed and is not configurable. The
  location is unidentified.

                        CPU SPEED SELECTION (CX 6X86)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  150MHz   60MHz       2x        On      Off     Off     On     Off     Off

  166MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  200MHz   75MHz       2x        On      Off     Off    Off      On     Off

                        CPU SPEED SELECTION (CX 6X86L)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  200MHz   75MHz       2x        On      Off     Off    Off      On     Off

                       CPU SPEED SELECTION (CX 6X86MX)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   60MHz      2.5x       On      On      Off     On     Off     Off

  200MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  233MHz   75MHz      2.5x       On      On      Off    Off      On     Off

  233MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  266MHz   75MHz       3x        Off     On      Off    Off      On     Off

  266MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                         CPU SPEED SELECTION (AM K5)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  90MHz    60MHz      1.5x       Off     Off     Off     On     Off     Off

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  120MHz   60MHz       2x        On      Off     Off     On     Off     Off

  133MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  150MHz   60MHz       2x        On      Off     Off    Off     Off     Off

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

                         CPU SPEED SELECTION (AM K6)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                         CPU SPEED SELECTION (INTEL)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  90MHz    60MHz      1.5x       Off     Off     Off     On     Off     Off

  100MHz   66MHz      1.5x       Off     Off     Off    Off     Off     Off

  120MHz   60MHz       2x        On      Off     Off     On     Off     Off

  133MHz   66MHz       2x        On      Off     Off    Off     Off     Off

  150MHz   60MHz      2.5x       On      On      Off     On     Off     Off

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

                       CPU SPEED SELECTION (INTEL MMX)

   CPU     Clock   Multiplier   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6
  speed    speed

  166MHz   66MHz      2.5x       On      On      Off    Off     Off     Off

  200MHz   66MHz       3x        Off     On      Off    Off     Off     Off

  233MHz   66MHz      3.5x       Off     Off     Off    Off     Off     Off

                           CPU VOLTAGE SELECTION

        Voltage                V core                     JV1

          3.3v                  2.0v                      Open

          3.3v                  2.1v               Pins 1 & 5 closed

          3.3v                  2.2v               Pins 2 & 6 closed

          3.3v                  2.3v            Pins 1 & 5, 2 & 6 closed

          3.3v                  2.4v               Pins 3 & 7 closed

          3.3v                  2.5v            Pins 1 & 5, 3 & 7 closed

          3.3v                  2.8v               Pins 4 & 8 closed

          3.3v                  2.9v            Pins 1 & 5, 4 & 8 closed

          3.3v                  3.2v            Pins 3 & 7, 4 & 8 closed

          3.3v                  3.3v            Pins 1 & 5, 3 & 7, 4 & 8
                                                         closed

          3.5v                  3.5v            Pins 1 & 5, 2 & 6, 3 & 7,
                                                      4 & 8 closed

