
EFA CORPORATION

P5V580-AT-C

Device Type         Mainboard
Processor           CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/Pentium/Pentium
                    MMX
Processor Speed     75/90/100/120/133/150/166/200/233MHz
Chip Set            VIA
Video Chip Set      None
Maximum Onboard     256MB (EDO supported)
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                Award
Dimensions          230mm 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
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                Location

  Serial port 1           CN1         Power LED &             J7/pins
                                      keylock               1/3/5/7/9

  Serial port 2           CN2         Speaker            J7/pins 2/4/6/8

  Floppy drive            CN3         Turbo LED          J7/pins 11 & 12
  interface

  Parallel port           CN4         Green PC           J7/pins 13 & 14
                                      connector

  IDE interface 2         CN5         IDE interface LED  J7/pins 15 & 16

  IDE interface 1         CN6         Reset switch       J7/pins 17 & 18

  PS/2 mouse               J2         32-bit PCI slots      PC1  PC3
  interface

  IR connector             J6

  Note: The location of J6 is unidentified.

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J4           Unidentified
      alter

     Factory configured - do not           J5           Unidentified
      alter

     Factory configured - do not           JP4          Unidentified
      alter (CMOS memory)

     Factory configured - do not          JP11          Unidentified
      alter

              SIMM CONFIGURATION

      Size          Bank 1          Bank 2

      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

     128MB        (2) 16M x 36       None

     136MB        (2) 16M x 36   (2) 1M x 36

          SIMM CONFIGURATION (CONT)

      Size          Bank 1          Bank 2

     144MB        (2) 16M x 36   (2) 2M x 36

     160MB        (2) 16M x 36   (2) 4M x 36

     192MB        (2) 16M x 36   (2) 8M x 36

     256MB        (2) 16M x 36   (2) 16M x 36

  Note: Board accepts EDO memory.

      DIMM CONFIGURATION

     Size          Bank 0

      8MB       (1) 1M x 64

     16MB       (1) 2M x 64

     32MB       (1) 4M x 64

     64MB       (1) 8M x 64

      CACHE CONFIGURATION

      Size          Bank 0

     256KB       (2) 32K x 32

     512KB       (2) 64K x 32

                       CPU SPEED SELECTION (CX 6X86)

    CPU      Clock     Multiplier    JP2      JP3      JP6    JP7    JP8
  speed      speed

  120MHz     50MHz         2x        Open    Closed    2 &    2 &     2 &
                                                        3      3      3

  133MHz     55MHz         2x        Open    Closed    1 &    2 &     2 &
                                                        2      3      3

  150MHz     60MHz         2x        Open    Closed    2 &    2 &     1 &
                                                        3      3      2

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

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86L)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

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

  200MHz    75MHz        2.5x       Closed   Closed     1 &   2 &     1 &
                                                        2      3      2

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

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

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

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

  200MHz    75MHz         2x         Open    Closed     1 &   2 &     1 &
                                                        2      3      2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

  75MHz     50MHz        1.5x        Open     Open      2 &   2 &     2 &
                                                        3      3      3

  90MHz     60MHz        1.5x        Open     Open      2 &   2 &     1 &
                                                        3      3      2

  100MHz    66MHz        1.5x        Open     Open      2 &   1 &     2 &
                                                        3      2      3

  120MHz    60MHz        1.5x        Open     Open      2 &   2 &     1 &
                                                        3      3      2

  133MHz    66MHz        1.5x        Open     Open      2 &   1 &     2 &
                                                        3      2      3

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

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

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

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

  233MHz    66MHz        3.5x        Open     Open      2 &   1 &     2 &
                                                        3      2      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

  75MHz     50MHz        1.5x        Open     Open      2 &   2 &     2 &
                                                        3      3      3

  90MHz     60MHz        1.5x        Open     Open      2 &   2 &     1 &
                                                        3      3      2

  100MHz    66MHz        1.5x        Open     Open      2 &   1 &     2 &
                                                        3      2      3

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU      Clock    Multiplier     JP2       JP3     JP6    JP7    JP8
  speed     speed

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

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

  233MHz    66MHz        3.5x        Open     Open      2 &   1 &     2 &
                                                        3      2      3

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

          Type                     JP5                      JP10

           AMD              Pins 1 & 2 closed               Open

          Cyrix             Pins 1 & 2 closed              Closed

      CX 6X86L-200          Pins 2 & 3 closed              Closed

  CX 6X86MX-200 (75MHz)     Pins 2 & 3 closed              Closed

          Intel             Pins 1 & 2 closed               Open

                           CPU VOLTAGE SELECTION

  Voltage     JP1      JP9A      JP9B       JP9C       JP9D       JP9E

    2.1v       *       Open      Open       Open       Open      Closed

    2.8v       3 &     Open     Closed      Open       Open       Open
              5, 4
              & 6

    2.9v       3 &     Open     Closed      Open       Open      Closed
              5, 4
              & 6

    3.2v       3 &     Open     Closed     Closed      Open       Open
              5, 4
              & 6

    3.3v       1 &     Open     Closed     Closed      Open      Closed
              3, 2
              & 4

    3.5v       1 &     Open     Closed     Closed     Closed     Closed
              3, 2
              & 4

  Note: Pins designated should be in the closed position. * = Reserved
  for future CPUs.

