
PIONEX TECHNOLOGIES, INC.

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 port, PS/2 mouse interface, serial ports (2), IR
                    connector, USB connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 2            CN1         Turbo LED            J13 pins 10 &
                                                                 11

  Serial port 1            CN2         Reset switch         J13 pins 12 &
                                                                 13

  Parallel port            CN3         Green PC connector   J13 pins 17 &
                                                                 18

  Floppy drive             CN4         IDE interface LED    J13 pins 20 &
  interface                                                      21

  IDE interface 2          CN5         Ground connector     J13 pins 25 &
                                                                 26

  IDE interface 1          CN6         IR connector              J14

  PS/2 mouse port           J2         Chassis fan power        JP13

  PS/2 mouse                J5         32-bit PCI slots       PC1 - PC3
  interface

  Speaker              J13 pins 1 -    USB connector             USB
                            4

  Power LED &          J13 pins 5 -
  keylock                   9

                        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

      8MB           None       (2) 1M x 36

     16MB        (2) 2M x 36      None

     16MB           None       (2) 2M x 36

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

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

     32MB        (2) 4M x 36      None

     32MB           None       (2) 4M x 36

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

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

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

     64MB        (2) 8M x 36      None

     64MB           None       (2) 8M x 36

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

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

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

     96MB        (2) 4M x 36   (2) 8M 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, 3     Open       Open
                                             & 4

   133MHz        55MHz           2x          Open       Open       Open

   150MHz        60MHz           2x         1 & 2       Open       Open

   166MHz        66MHz           2x         3 & 4       Open       Open

  Note: Pins designated should be in the closed position.

                         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         Voltage       V i/O         V core      JP6    JP11

       CX M1          Single       3.45v          3.5v       1 &     1 &
                                                              2      2, 3
                                                                     & 4

        AM K5         Single       3.45v          3.5v       1 &     1 &
   PRxxxAB/AC/AF                                              2      2, 3
                                                                     & 4

    P54C/CQS/CT       Single       3.45v          3.5v       1 &     1 &
                                                              2      2, 3
                                                                     & 4

        AM K5          Dual      3.45v/3.5v    2.6v/2.9v     2 &    Open
   PRxxxAH/AJ/AK                                              3

      P55C/CT          Dual      3.45v/3.5v    2.6v/2.9v     2 &    Open
                                                              3

  Note: Pins designated should be in the closed position.

  I/O VOLTAGE SELECTION (DUAL VOLTAGE CPU)

       Voltage                 JP12

        3.45v                 Closed

         3.5v                  Open

  CORE VOLTAGE SELECTION (DUAL VOLTAGE CPU)

        Voltage                 JP14

         2.6v                  Closed

         2.9v                   Open

