
PIONEX TECHNOLOGIES, INC.

MB-8500TUR

Processor           CX M1/AM K5/Pentium
Processor Speed     75/90/100/120/133/150/166/180/200MHz
Chip Set            Unidentified
Video Chip Set      None
Maximum Onboard     128MB (EDO 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 port, serial ports (2), VGA interface, cache
                    slot, IR connector, USB connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  PS/2 mouse                J1         IR connector              J15
  interface

  PS/2 mouse port           J5         Speaker               J16 pins 1 -
                                                                  4

  VGA interface             J6         Power LED &           J16 pins 5 -
                                       keylock                    9

  Floppy drive              J7         Turbo LED            J16 pins 10 &
  interface                                                      11

  IDE interface 1           J8         Reset switch         J16 pins 12 &
                                                                 13

  USB connector             J9         Green PC connector   J16 pins 17 &
                                                                 18

  Serial port 1            J10         IDE interface LED    J16 pins 20 &
                                                                 21

  Serial port 2            J11         Ground connector     J16 pins 25 &
                                                                 26

  Parallel port            J12         32-bit PCI slots       PC1 - PC3

  IDE interface 2          J13         Cache slot                SL1

  Chassis fan power        J14

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     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 voltage select 5v         JP13        Pins 1 & 2 closed

      Flash BIOS voltage select 12v        JP13        Pins 2 & 3 closed

      Flash BIOS voltage select 0v         JP13              Open
      or EPROM

     Factory configured - do not          JP16          Unidentified
      alter

                       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) 1M x 36          (2) 2M x 36

        32MB              (2) 4M x 36              None

        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              (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. Bank 2 accepts DIMM modules

                            CACHE CONFIGURATION

      Size            Bank 0            TAG                  SL1

    256KB (A)      (2) 32K x 32    (1) 8K/32K x 8       Not installed

    256KB (B)          None             None             256KB module
                                                          installed

    512KB (A)      (2) 64K x 32     (1) 32K x 8         Not installed

    512KB (B)      (2) 32K x 32      (1) 8K x 8          256KB module
                                                          installed

    512KB (C)          None             None             512KB module
                                                          installed

        CACHE JUMPER CONFIGURATION

        Size                 JP11

        256KB         Pins 1 & 2 closed

        512KB         Pins 2 & 3 closed

                        CPU SPEED SELECTION (CYRIX)

  CPU speed      Clock       Multiplier       JP1        JP2       JP6
                speed

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

   133MHz       55MHz            2x          Open       Open       Open

   150MHz       60MHz            2x          Open       Open      1 & 2

   166MHz       66MHz            2x          Open       Open      3 & 4

  Note: Pins designated should be in the closed position.

                         CPU SPEED SELECTION (AMD)

  CPU speed     Clock       Multiplier        JP1        JP2       JP6
                speed

   75MHz        66MHz           1x          Closed      Open      3 & 4

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

   90MHz        55MHz          1.5x          Open       Open       Open

   90MHz        60MHz          1.5x          Open       Open      1 & 2

   100MHz       66MHz          1.5x          Open       Open      3 & 4

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

  CPU speed     Clock      Multiplier        JP1         JP2        JP6
                speed

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

   90MHz        60MHz         1.5x           Open        Open      1 & 2

   100MHz       66MHz         1.5x           Open        Open      3 & 4

   120MHz       60MHz          2x           Closed       Open      1 & 2

   133MHz       66MHz          2x           Closed       Open      3 & 4

   150MHz       60MHz         2.5x          Closed      Closed     1 & 2

   166MHz       66MHz         2.5x          Closed      Closed     3 & 4

   180MHz       60MHz          3x            Open       Closed     1 & 2

   200MHz       66MHz          3x            Open       Closed     3 & 4

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

        Type                JP7              JP14              JP15

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

        AM K5              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

