
EFA CORPORATION

P55SVPIO

Processor             CX M1/Pentium
Processor Speed       75/90/100/120/133/150/166MHz
Chip Set              SIS
Video Chip Set        None
Maximum Onboard       128MB (EDO supported)
Memory
Maximum Video Memory  None
Cache                 256/512KB
BIOS                  Award
Dimensions            330mm x 220mm
I/O Options           32-bit PCI slots (3), floppy drive interface, IDE
                      interfaces (2), parallel port, serial ports (2), VGA
                      feature connector, VGA port, cache slot, VRM
                      connector
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  VGA port                    J5       Reset switch               J16

  VGA feature connector       J7       Turbo LED                  J17

  Serial port 2               J8       Turbo switch               J18

  Serial port 1               J9       Speaker                    J19

  Parallel port              J10       Power LED & keylock        J20

  Floppy drive interface     J11       External battery           J21

  IDE interface 1            J12       32-bit PCI slots         PC1 - PC3

  IDE interface 2            J13       Cache slot                 SL1

  IDE interface LED          J14       VRM connector              VRM

                        USER CONFIGURABLE SETTINGS

                Function                     Label          Position

      Chipset select SMC665                   JP2       Pins 2 & 3 closed

      Chipset select SMC669                   JP2       Pins 1 & 2 closed

      Monitor type select EGA/VGA             JP7             Open

      Monitor type select monochrome          JP7            Closed

     Factory configured - do not alter       JP8       Pins 1 & 2 closed

     Factory configured - do not alter       JP9       Pins 1 & 2 closed

     Factory configured - do not alter      JP15       Pins 1 & 2 closed

      BIOS type select flash BIOS            JP17       Pins 1 & 2, 5 & 6
                                                             closed

      BIOS type select EPROM                 JP17       Pins 2 & 3, 4 & 5
                                                             closed

     Factory configured - do not alter      JP20       Pins 2 & 3 closed

     Factory configured - do not alter      JP21       Pins 1 & 2 closed

     CMOS memory normal operation           JP23       Pins 1 & 2 closed

      CMOS memory clear                      JP23       Pins 2 & 3 closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       4MB        (2) 512K x 36         None

       8MB         (2) 1M x 36          None

       8MB        (2) 512K x 36    (2) 512K x 36

      12MB         (2) 1M x 36     (2) 512K x 36

      16MB         (2) 2M x 36          None

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

      20MB         (2) 2M x 36     (2) 512K 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

      36MB         (2) 4M x 36     (2) 512K 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

                        DRAM CONFIGURATION (CONT)

          Size                    Bank 0                   Bank 1

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

          68MB                 (2) 8M x 36             (2) 512K 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

            Note: Board accepts EDO memory. Board also accepts x 32
            SIMMs. If using x 32 SIMMs, one module may be installed in
            the first socket on Bank 0 labeled SIMM 1.

  DRAM JUMPER CONFIGURATION

     Type            JP6

      EDO          Closed

   Fast page        Open

                            CACHE CONFIGURATION

       Size            Bank 0            TAG                 SL1

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

    256KB (B)           None            None             256KB module
                                                          installed

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

    512KB (B)           None            None             512KB module
                                                          installed

                        CACHE JUMPER CONFIGURATION

      Size              JP10               JP11               JP12

    256KB (A)         Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

    256KB (B)         Pins 2 & 3           Open               Open
                       closed

    512KB (A)         Pins 1 & 2        Pins 2 & 3      Pins 1 & 2 closed
                       closed             closed

    512KB (B)         Pins 2 & 3           Open               Open
                       closed

              CACHE VOLTAGE CONFIGURATION

          Voltage                      JP24

           Mixed             Pins 3 & 5, 4 & 6 closed

            3.3v             Pins 1 & 3, 2 & 4 closed

                            CPU SPEED SELECTION

    CPU        Clock     Multiplier     JP13     JP14     JP18      JP19
   speed      speed

    N/A       40MHz         N/A        1 & 2    1 & 2      N/A      N/A

   75MHz      50MHz         1.5x       2 & 3    2 & 3     1 & 2    1 & 2

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

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

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

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

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

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

    N/A        N/A           3x         N/A      N/A      2 & 3    1 & 2

    N/A        N/A           3x         N/A      N/A      2 & 3    1 & 2

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

          Voltage                   JP16                    JP22

           3.3v                     Open           Pins 1 & 2, 3 & 4, 5 &
                                                          6 closed

       VRM installed               Closed                   Open

                          ON BOARD VGA SELECTION

      Setting              JP3              JP4                JP5

      Enabled            Closed            Closed           Pins 1 & 2
                                                             closed

      Disabled            Open              Open            Pins 2 & 3
                                                             closed

