
BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-8500TVX

Processor           CX M1/AM K5/Pentium
Processor Speed     75/90/100/120/133/150/166/180/200MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     128MB (EDO supported)
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                AMI
Dimensions          220mm 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), IR connector, USB
                    connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 1            CN1         Power LED &           J13 pins 5 -
                                       keylock                    9

  Serial port 2            CN2         Turbo LED            J13 pins 10 &
                                                                 11

  Parallel port            CN3         Reset switch         J13 pins 12 &
                                                                 13

  Floppy drive             CN4         Green PC connector   J13 pins 17 &
  interface                                                      18

  IDE interface 2          CN5         IDE interface LED    J13 pins 20 &
                                                                 21

  IDE interface 1          CN6         +5v ground           J13 pins 25 &
                                                                 26

  USB connector             J3         IR connector              J14

  PS/2 mouse                J5         Chassis fan power        JP13
  interface

  Speaker              J13 pins 1 -    32-bit PCI slots       PC1 - PC3
                            4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Flash BIOS voltage select 12v           JP3           Pins 2 & 3
                                                              closed

      Flash BIOS voltage select 5v            JP3           Pins 1 & 2
                                                              closed

     CMOS memory normal operation            JP4              Open

      CMOS memory clear                       JP4             Closed

             DRAM 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

     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.

                 CACHE CONFIGURATION

       Size            Bank 0             TAG

      256KB         (2) 32K x 32     (1) 8K/32K x 8

      512KB         (2) 64K x 32      (1) 32K x 8

  CACHE JUMPER CONFIGURATION

     Size            JP7

     256KB           Open

     512KB          Closed

                        CPU SPEED SELECTION (CYRIX)

  CPU speed      Clock      Multiplier       JP5        JP8        JP9
                speed

   120MHz       50MHz           2x          1 & 2,     Open     See note
                                            3 & 4

   133MHz       55MHz           2x           Open      Open     See note

   150MHz       60MHz           2x          1 & 2      Open     See note

   166MHz       66MHz           2x          3 & 4      Open     See note

  Note: Pins designated should be in the closed position. If Rev. 2.2 is
  used, set JP9 to open. If Rev. 2.3 is used, set JP9 to closed.

                         CPU SPEED SELECTION (AMD)

  CPU speed      Clock      Multiplier      JP5        JP8        JP9
                speed

    75MHz       50MHz          1.5x        1 & 2,     Open        Open
                                           3 & 4

    90MHz       60MHz          1.5x        1 & 2      Open        Open

   100MHz       66MHz          1.5x        3 & 4      Open        Open

   120MHz       60MHz          1.5x        1 & 2      Open        Open

   133MHz       66MHz          1.5x        3 & 4      Open        Open

   150MHz       60MHz           2x         1 & 2      Open       Closed

   166MHz       66MHz           2x         3 & 4      Open       Closed

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

  CPU speed     Clock      Multiplier      JP5        JP8          JP9
                speed

   75MHz        50MHz         1.5x        1 & 2,      Open        Open
                                          3 & 4

   90MHz        60MHz         1.5x        1 & 2       Open        Open

   100MHz       66MHz         1.5x        3 & 4       Open        Open

   120MHz       60MHz          2x         1 & 2       Open       Closed

   133MHz       66MHz          2x         3 & 4       Open       Closed

   150MHz       60MHz         2.5x        1 & 2      Closed      Closed

   166MHz       66MHz         2.5x        3 & 4      Closed      Closed

   180MHz       60MHz          3x         1 & 2      Closed       Open

   200MHz       66MHz          3x         3 & 4      Closed       Open

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

            Type                      JP6                    JP11

           CX M1               Pins 1 & 2 closed       Pins 1 & 2, 3 & 4
                                                            closed

   AM K5 (PrxxxAB/AC/AF)       Pins 1 & 2 closed       Pins 1 & 2, 3 & 4
                                                            closed

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

   AM K5 (PrxxxAH/AJ/AK)       Pins 2 & 3 closed             Open

          P55C/CT              Pins 2 & 3 closed             Open

  CPU VOLTAGE SELECTION (SINGLE)

     Voltage            JP12

      3.4v             Closed

      3.5v              Open

       CPU VOLTAGE SELECTION (DUAL)

  Voltage    V core      JP12      JP14

   3.4v       2.6v      Closed    Closed

   3.4v       2.9v       Open     Closed

   3.5v       2.6v      Closed     Open

   3.5v       2.9v       Open      Open

