
BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-8500 TUR (VER. 1)

Device Type         Mainboard
Processor           CX 6X86/AM K5/Pentium/Pentium MMX
Processor Speed     75/90/100/120/133/150/166/180/200MHz
Chip Set            Unidentified
Video Chip Set      None
Maximum Onboard     128MB (EDO & SDRAM supported)
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                AMI
Dimensions          285mm x 220mm
I/O Options         32-bit PCI slots (3), floppy drive interface, green PC
                    connector, IDE interfaces (2), parallel port, PS/2
                    mouse interface, serial ports (2), cache slot, IR
                    connector, USB connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  PS/2 mouse                J1         Speaker             J16/pins 1 - 4
  interface

  Floppy drive              J7         Power LED &         J16/pins 5 - 9
  interface                            keylock

  IDE interface 1           J8         Turbo LED            J16/pins 10 &
                                                                 11

  USB connector             J9         Reset switch         J16/pins 12 &
                                                                 13

  Serial port 1            J10         Green PC LED         J16/pins 14 &
                                                                 15

  Serial port 2            J11         Green PC connector   J16/pins 17 &
                                                                 18

  Parallel port            J12         IDE interface LED    J16/pins 20 &
                                                                 21

  IDE interface 2          J13         Turbo switch         J16/pins 23 &
                                                                 24

  Chassis fan power        J14         32-bit PCI slots      PC1  PC3

  IR connector             J15         Cache slot               SL1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J6           Unidentified
      alter

     Factory configured - do not           JP4          Unidentified
      alter

     Factory configured - do not           JP5          Unidentified
      alter

     Factory configured - do not           JP9          Unidentified
      alter

     Factory configured - do not          JP10          Unidentified
      alter

     CMOS memory normal operation         JP12              Open

      CMOS memory clear                    JP12             Closed

      Flash BIOS select 5v                 JP13        Pins 1 & 2 closed

      Flash BIOS select 12v                JP13        Pins 2 & 3 closed

      Flash BIOS select 0v or EPROM        JP13              Open

             SIMM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 36      None

     16MB        (2) 2M x 36      None

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

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

     32MB        (2) 4M x 36      None

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

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

     48MB        (2) 4M x 36   (2) 2M x 36

     64MB        (2) 8M x 36      None

     64MB        (2) 4M x 36   (2) 4M x 36

         SIMM CONFIGURATION (CONT)

     Size          Bank 0        Bank 1

     72MB        (2) 8M x 36   (2) 1M x 36

     80MB        (2) 8M x 36   (2) 2M x 36

     96MB        (2) 8M x 36   (2) 4M x 36

     128MB       (2) 8M x 36   (2) 8M x 36

  Note: Board accepts EDO memory.

      DIMM CONFIGURATION

     Size          Bank 2

      8MB       (1) 1M x 64

     16MB       (1) 2M x 64

     32MB       (1) 4M x 64

                            CACHE CONFIGURATION

      Size          Bank 0             SL1                   TAG

     256KB       (2) 32K x 32     Not installed          Unidentified

     512KB       (2) 32K x 32      256KB module          Unidentified
                                    installed

        CACHE JUMPER CONFIGURATION

        Size                 JP11

        256KB         Pins 1 & 2 closed

        512KB         Pins 2 & 3 closed

                       CPU SPEED SELECTION (CX 6X86)

    CPU       Clock    Multiplier     JP1      JP2      JP6/       JP6/
   speed     speed
                                                       pins 1    pins 3 &
                                                        & 2         4

  120MHz     50MHz         2x         Open    Open     Closed     Closed

  133MHz     55MHz         2x         Open    Open      Open       Open

  150MHz     60MHz         2x         Open    Open     Closed      Open

  166MHz     66MHz         2x         Open    Open      Open      Closed

                        CPU SPEED SELECTION (AM K5)

    CPU      Clock    Multiplier      JP1      JP2      JP6/       JP6/
  speed      speed
                                                        pins 1   pins 3 &
                                                         & 2        4

  75MHz      66MHz        1x         Closed    Open     Open      Closed

  75MHz      50MHz       1.5x         Open     Open    Closed     Closed

  90MHz      55MHz       1.5x         Open     Open     Open       Open

  90MHz      60MHz       1.5x         Open     Open    Closed      Open

  100MHz     66MHz       1.5x         Open     Open     Open      Closed

                        CPU SPEED SELECTION (INTEL)

    CPU      Clock    Multiplier     JP1       JP2       JP6/      JP6/
  speed     speed
                                                        pins 1     pins 3
                                                         & 2        & 4

  75MHz     50MHz        1.5x        Open      Open     Closed    Closed

  90MHz     60MHz        1.5x        Open      Open     Closed     Open

  100MHz    66MHz        1.5x        Open      Open      Open     Closed

  120MHz    60MHz         2x        Closed     Open     Closed     Open

  133MHz    66MHz         2x        Closed     Open      Open     Closed

  150MHz    60MHz        2.5x       Closed    Closed    Closed     Open

  166MHz    66MHz        2.5x       Closed    Closed     Open     Closed

  180MHz    60MHz         3x         Open     Closed    Closed     Open

  200MHz    66MHz         3x         Open     Closed     Open     Closed

                      CPU SPEED SELECTION (INTEL MMX)

    CPU      Clock    Multiplier     JP1       JP2       JP6/      JP6/
  speed     speed
                                                        pins 1     pins 3
                                                         & 2        & 4

  166MHz    66MHz        2.5x       Closed    Closed     Open     Closed

  180MHz    60MHz         3x         Open     Closed    Closed     Open

  200MHz    66MHz         3x         Open     Closed     Open     Closed

                            CPU TYPE SELECTION

         Type               JP7              JP14              JP15

         AMD                Open           Pins 1 & 2     Pins 1 & 2, 3 &
                                            closed           4 closed

        Cyrix               Open           Pins 1 & 2     Pins 1 & 2, 3 &
                                            closed           4 closed

     P54C/CQS/CT            Open           Pins 1 & 2     Pins 1 & 2, 3 &
                                            closed           4 closed

       P55C/CT             Closed          Pins 2 & 3          Open
                                            closed

  CPU VOLTAGE SELECTION

   Voltage        JP8

    3.4v        Closed

    3.5v         Open

