
EPOX COMPUTER CO., LTD.

P55KTX

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

                 AM K6/Pentium/Pentium MMX
Processor Speed  90/100/120/133/150/166/200/233/266/300/333MHz
Chip Set         VIA
Video Chip Set   None
Maximum Onboard  256MB (SDRAM supported)
Memory
Maximum Video    None
Memory
Cache            512KB
BIOS             Award
Dimensions       305mm x 244mm
I/O Options      32-bit PCI slots (4), floppy drive interface, IDE
                 interfaces (2), parallel port, PS/2 mouse port, serial
                 ports (2), IR connector, USB connector, ATX power
                 connector
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  ATX power connector        ATX       CPU fan power               J6

  USB connector              CN1       Power LED & keylock        J12A

  Serial port 2              CN2       Speaker                    J12B

  Parallel port              CN3       Reset switch               J12C

  PS/2 mouse port            CN4       Green PC LED               J12D

  Serial port 1              CN5       Turbo LED                  J12E

  Floppy drive interface     CN6       IDE interface LED          J12F

  IDE interface 1            CN7       Soft off power supply      J12G

  IDE interface 2            CN8       32-bit PCI slots         PC1  PC4

  IR connector                J3

  Note: The location of J3 is unidentified.

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Keyboard power on disabled              J1            Pins 1 & 2
                                                              closed

      Keyboard power on enabled               J1            Pins 2 & 3
                                                              closed

                      DIMM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      8MB         (1) 1M x 64        None            None

      16MB        (1) 1M x 64     (1) 1M x 64        None

      16MB        (1) 2M x 64        None            None

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

      32MB        (1) 2M x 64     (1) 2M x 64        None

      32MB        (1) 4M x 64        None            None

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

      64MB        (1) 4M x 64     (1) 4M x 64        None

      64MB        (1) 8M x 64        None            None

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

     128MB        (1) 8M x 64     (1) 8M x 64        None

     128MB       (1) 16M x 64        None            None

     164MB       (1) 16M x 64     (1) 1M x 64        None

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

     144MB       (1) 16M x 64     (1) 2M x 64        None

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

     160MB       (1) 16M x 64     (1) 4M x 64        None

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64        None

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

     256MB       (1) 16M x 64    (1) 16M x 64        None

            Note: Board accepts SDRAM memory.

      CACHE CONFIGURATION

      Size          Bank 0

     512KB       (1) 64K x 64

                      CPU SPEED SELECTION (CX 6X86L)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   150MHz       60MHz         2.5x       1 & 2   1 & 2    2 & 3    1 & 2

   166MHz       66MHz         2.5x       1 & 2   1 & 2    2 & 3    Open

   200MHz       75MHz          3x        1 & 2   1 & 2    2 & 3    3 & 4

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (IBM 6X86L)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   150MHz       60MHz         2.5x       1 & 2   1 & 2    2 & 3    1 & 2

   166MHz       66MHz         2.5x       1 & 2   1 & 2    2 & 3    Open

   200MHz       75MHz          3x        1 & 2   1 & 2    2 & 3    3 & 4

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   166MHz       66MHz          2x        1 & 2   1 & 2    2 & 3    Open

   166MHz       60MHz         2.5x       1 & 2   2 & 3    2 & 3    1 & 2

   200MHz       75MHz          2x        1 & 2   1 & 2    2 & 3    3 & 4

   200MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   233MHz       75MHz         2.5x       1 & 2   2 & 3    2 & 3    3 & 4

   233MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

   266MHz       75MHz          3x        1 & 2   2 & 3    1 & 2    3 & 4

   266MHz       66MHz         3.5x       1 & 2   1 & 2    1 & 2    Open

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (IBM 6X86MX)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   166MHz       66MHz          2x        1 & 2   1 & 2    2 & 3    Open

   166MHz       60MHz         2.5x       1 & 2   2 & 3    2 & 3    1 & 2

   200MHz       75MHz          2x        1 & 2   1 & 2    2 & 3    3 & 4

   200MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   233MHz       75MHz         2.5x       1 & 2   2 & 3    2 & 3    3 & 4

   233MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

   266MHz       75MHz          3x        1 & 2   2 & 3    1 & 2    3 & 4

   266MHz       66MHz         3.5x       1 & 2   1 & 2    1 & 2    Open

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   90MHz        60MHz         1.5x       1 & 2   1 & 2    1 & 2    1 & 2

   100MHz       66MHz         1.5x       1 & 2   1 & 2    1 & 2    Open

   120MHz       60MHz          2x        1 & 2   1 & 2    2 & 3    1 & 2

   133MHz       66MHz          2x        1 & 2   1 & 2    2 & 3    Open

   150MHz       60MHz         2.5x       1 & 2   2 & 3    2 & 3    1 & 2

   166MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   200MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   166MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   200MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

   233MHz       66MHz         3.5x       1 & 2   1 & 2    1 & 2    Open

   266MHz       66MHz          4x        2 & 3   1 & 2    2 & 3    Open

   300MHz       66MHz         4.5x       2 & 3   2 & 3    2 & 3    Open

   333MHz       66MHz          5x        2 & 3   2 & 3    1 & 2    Open

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   90MHz        60MHz         1.5x       1 & 2   1 & 2    1 & 2    1 & 2

   100MHz       66MHz         1.5x       1 & 2   1 & 2    1 & 2    Open

   120MHz       60MHz          2x        1 & 2   1 & 2    2 & 3    1 & 2

   133MHz       66MHz          2x        1 & 2   1 & 2    2 & 3    Open

   150MHz       60MHz         2.5x       1 & 2   2 & 3    2 & 3    1 & 2

   166MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   200MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

  CPU speed     Clock      Multiplier     J7      J8       J9       J11
                speed

   166MHz       66MHz         2.5x       1 & 2   2 & 3    2 & 3    Open

   200MHz       66MHz          3x        1 & 2   2 & 3    1 & 2    Open

   233MHz       66MHz         3.5x       1 & 2   1 & 2    1 & 2    Open

   266MHz       66MHz          4x        2 & 3   1 & 2    2 & 3    Open

   300MHz       66MHz         4.5x       2 & 3   2 & 3    2 & 3    Open

   333MHz       66MHz          5x        2 & 3   2 & 3    1 & 2    Open

  Note: Pins designated should be in the closed position.

           CPU VOLTAGE SELECTION

       Voltage                 J10

         2.0v           Pins 1 & 2 closed

         2.8v           Pins 3 & 4 closed

         2.9v           Pins 5 & 6 closed

         3.2v           Pins 7 & 8 closed

         3.5v          Pins 9 & 10 closed

