
EPOX COMPUTER CO., LTD.

P55-VPX

Device Type    Mainboard
Processor      CX 6X86L/IBM 6X86L/CX 686MX/IBM 6X86MX/AM K5/

               AM K6/Pentium/Pentium MMX
Processor      100/120/133/150/166/188/200/225/233/266/300/333MHz
Speed
Chip Set       VIA
Video Chip Set None
Maximum        256MB (EDO & SDRAM supported)
Onboard Memory
Maximum Video  None
Memory
Cache          256/512KB
BIOS           Award
Dimensions     254mm x 218mm
I/O Options    32-bit PCI slots (4), floppy drive interface, green PC
               connector, IDE interfaces (2), parallel port, PS/2 mouse
               interface, serial ports (2), IR connector, USB connector,
               ATX power connector
NPU Options    None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  ATX power connector        ATX       IR connector               JP10

  Serial port 1              CN2       Power LED & keylock       JP11A

  Serial port 2              CN3       Speaker                   JP11B

  USB connector              CN4       Reset switch              JP11C

  Parallel port              CN5       Green PC LED              JP11D

  Floppy drive interface     CN6       Turbo LED                 JP11E

  IDE interface 2            CN7       IDE interface LED         JP11F

  IDE interface 1            CN8       Soft off power supply     JP11G

  PS/2 mouse interface       JP1       32-bit PCI slots         PC1  PC4

  CPU fan power              JP7

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Keyboard power on disabled              JP2           Pins 1 & 2
                                                              closed

      Keyboard power on enabled               JP2           Pins 2 & 3
                                                              closed

              SIMM CONFIGURATION

         Size                  Bank 2

          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 0        Bank 1

      8MB        (1) 1M x 64      None

     16MB        (1) 2M x 64      None

     16MB        (1) 1M x 64   (1) 1M x 64

     24MB        (1) 2M x 64   (1) 1M x 64

     32MB        (1) 4M x 64      None

     32MB        (1) 2M x 64   (1) 2M x 64

     40MB        (1) 4M x 64   (1) 1M x 64

     48MB        (1) 4M x 64   (1) 2M x 64

     64MB        (1) 8M x 64      None

           DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1

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

      72MB        (1) 8M x 64     (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64

     128MB       (1) 16M x 64        None

     128MB        (1) 8M x 64     (1) 8M x 64

     136MB       (1) 16M x 64     (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64

     256MB       (1) 16M x 64    (1) 16M x 64

            Note: Board accepts SDRAM memory.

                        DIMM VOLTAGE CONFIGURATION

               Voltage                                 JP5

                  3.3v                     Pins 5 & 6, 7 & 8 closed

                    5v                      Pins 1 & 2, 3 & 4 closed

                            CACHE CONFIGURATION

            Note: The location of the 256KB/512KB cache is unidentified.

                      CPU SPEED SELECTION (CX 6X86L)

    CPU speed       Clock speed         Multiplier             JP6

     150MHz            60MHz                2x              Pins 2 & 15
                                                              closed

     166MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     200MHz            75MHz                2x              Pins 4 & 17
                                                              closed

                      CPU SPEED SELECTION (IBM 6X86L)

    CPU speed       Clock speed         Multiplier             JP6

     150MHz            60MHz                2x              Pins 2 & 15
                                                              closed

     166MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     200MHz            75MHz                2x              Pins 4 & 17
                                                              closed

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU speed       Clock speed         Multiplier             JP6

     166MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     166MHz            60MHz               2.5x             Pins 5 & 18
                                                              closed

     200MHz            75MHz                2x              Pins 4 & 17
                                                              closed

     200MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     233MHz            75MHz               2.5x             Pins 7 & 20
                                                              closed

     233MHz            66MHz                3x              Pins 8 & 21
                                                              closed

     266MHz            75MHz                3x              Pins 9 & 22
                                                              closed

     266MHz            66MHz               3.5x            Pins 10 & 23
                                                              closed

                     CPU SPEED SELECTION (IBM 6X86MX)

    CPU speed       Clock speed         Multiplier             JP6

     166MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     166MHz            60MHz               2.5x             Pins 5 & 18
                                                              closed

     200MHz            75MHz                2x              Pins 4 & 17
                                                              closed

     200MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     233MHz            75MHz               2.5x             Pins 7 & 20
                                                              closed

     233MHz            66MHz                3x              Pins 8 & 21
                                                              closed

     266MHz            75MHz                3x              Pins 9 & 22
                                                              closed

     266MHz            66MHz               3.5x            Pins 10 & 23
                                                              closed

                        CPU SPEED SELECTION (AM K5)

    CPU speed       Clock speed         Multiplier             JP6

     100MHz            66MHz               1.5x             Pins 1 & 14
                                                              closed

     120MHz            60MHz                2x              Pins 2 & 15
                                                              closed

     133MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     150MHz            60MHz               2.5x             Pins 5 & 18
                                                              closed

     166MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     188MHz            75MHz               2.5x             Pins 7 & 20
                                                              closed

     200MHz            66MHz                3x              Pins 8 & 21
                                                              closed

                        CPU SPEED SELECTION (AM K6)

    CPU speed       Clock speed         Multiplier             JP6

     166MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     200MHz            66MHz                3x              Pins 8 & 21
                                                              closed

     225MHz            75MHz                3x              Pins 9 & 22
                                                              closed

     233MHz            66MHz               3.5x            Pins 10 & 23
                                                              closed

     266MHz            66MHz                4x             Pins 11 & 24
                                                              closed

     300MHz            66MHz               4.5x            Pins 12 & 25
                                                              closed

     333MHz            66MHz                5x             Pins 13 & 26
                                                              closed

                        CPU SPEED SELECTION (INTEL)

    CPU speed       Clock speed         Multiplier             JP6

     100MHz            66MHz               1.5x             Pins 1 & 14
                                                              closed

     120MHz            60MHz                2x              Pins 2 & 15
                                                              closed

     133MHz            66MHz                2x              Pins 3 & 16
                                                              closed

     150MHz            60MHz               2.5x             Pins 5 & 18
                                                              closed

     166MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     188MHz            75MHz               2.5x             Pins 7 & 20
                                                              closed

     200MHz            66MHz                3x              Pins 8 & 21
                                                              closed

                      CPU SPEED SELECTION (INTEL MMX)

    CPU speed       Clock speed         Multiplier             JP6

     166MHz            66MHz               2.5x             Pins 6 & 19
                                                              closed

     200MHz            66MHz                3x              Pins 8 & 21
                                                              closed

     225MHz            75MHz                3x              Pins 9 & 22
                                                              closed

     233MHz            66MHz               3.5x            Pins 10 & 23
                                                              closed

     266MHz            66MHz                4x             Pins 11 & 24
                                                              closed

     300MHz            66MHz               4.5x            Pins 12 & 25
                                                              closed

     333MHz            66MHz                5x             Pins 13 & 26
                                                              closed

           CPU VOLTAGE SELECTION

       Voltage                 JP8

         2.0v           Pins 1 & 6 closed

         2.2v          Pins 5 & 10 closed

         2.8v           Pins 2 & 7 closed

         2.9v           Pins 3 & 8 closed

         3.2v           Pins 4 & 9 closed

