
ASUS COMPUTER INTERNATIONAL

P/I-P55SP4

Processor          Pentium
Processor Speed    75/90/100/120/133/150/166MHz
Chip Set           SIS
Max. Onboard DRAM  512MB
Cache              256/512/1024KB
BIOS               Award
Dimensions         330mm x 218mm
I/O Options        Parallel port, serial ports (2), 32-bit PCI slots (4),
                   green PC connector, floppy drive interface, IDE
                   interfaces (2), cache slot, MediaBus slot, infrared
                   connector
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                 Location

  PS/2 mouse               CN1        Green PC connector     J1 pins 14 &
  interface                                                      15

  Serial port 2            CN2        Turbo switch           J1 pins 16 &
                                                                 17

  Serial port 1            CN3        Reset switch           J1 pins 19 &
                                                                 20

  Parallel port            CN4        Green PC connector         JP1

  Floppy drive             CN5        Chassis fan power         JP26
  interface

  IDE interface 1          CN6        IDE interface LED         JP27

  IDE interface 2          CN7        Infrared connector        JP31

  Power LED &           J1 pins 1 -   32-bit PCI slots        PC1 - PC4
  keylock                   5

  Speaker               J1 pins 7 -   MediaBus slot              SL1
                            10

  Turbo LED            J1 pins 12 &   Cache slot                 SL2
                            13

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     PS/2 mouse port disabled                 JP5           pins 1 & 2
                                                              closed

      PS/2 mouse port enabled                  JP5           pins 2 & 3
                                                              closed

     Flash BIOS boot block protected         JP16           pins 1 & 2
                                                              closed

      Flash BIOS boot block programming       JP16           pins 2 & 3
      enabled                                                 closed

     On board I/O enabled                    JP1C           pins 1 & 2
                                                              closed

      On board I/O disabled                   JP1C           pins 2 & 3
                                                              closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       4MB        (2) 512K x 36         NONE

       6MB        (2) 256K x 36    (2) 512K x 36

       6MB        (2) 512K x 36    (2) 256K x 36

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

       8MB         (2) 1M x 36          NONE

      10MB        (2) 256K x 36     (2) 1M x 36

      10MB         (2) 1M x 36     (2) 256K x 36

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

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

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

      16MB         (2) 2M x 36          NONE

      18MB        (2) 256K x 36     (2) 2M x 36

      18MB         (2) 2M x 36     (2) 256K x 36

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

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

      24MB         (2) 1M x 36      (2) 2M x 36

      24MB         (2) 2M x 36      (2) 1M x 36

      32MB         (2) 2M x 36      (2) 2M x 36

      32MB         (2) 4M x 36          NONE

      34MB        (2) 256K x 36     (2) 4M x 36

      34MB         (2) 4M x 36     (2) 256K x 36

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

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

      40MB         (2) 1M x 36      (2) 4M x 36

      40MB         (2) 4M x 36      (2) 1M x 36

      48MB         (2) 2M x 36      (2) 4M x 36

      48MB         (2) 4M x 36      (2) 2M x 36

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

      64MB         (2) 8M x 36          NONE

      66MB        (2) 256K x 36     (2) 8M x 36

      66MB         (2) 8M x 36     (2) 256K x 36

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

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

            DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

      72MB         (2) 1M x 36      (2) 8M x 36

      72MB         (2) 8M x 36      (2) 1M x 36

      80MB         (2) 2M x 36      (2) 8M x 36

      80MB         (2) 8M x 36      (2) 2M x 36

      96MB         (2) 4M x 36      (2) 8M 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

      130MB       (2) 256K x 36     (2) 16M x 36

      130MB        (2) 16M x 36    (2) 256K x 36

      132MB       (2) 512K x 36     (2) 16M x 36

      132MB        (2) 16M x 36    (2) 512K x 36

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

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

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

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

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

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

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

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

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

      256MB        (2) 32M x 36         NONE

      258MB       (2) 256K x 36     (2) 32M x 36

      258MB        (2) 32M x 36    (2) 256K x 36

      260MB       (2) 512K x 36     (2) 32M x 36

      260MB        (2) 32M x 36    (2) 512K x 36

      264MB        (2) 1M x 36      (2) 32M x 36

      264MB        (2) 32M x 36     (2) 1M x 36

      272MB        (2) 2M x 36      (2) 32M x 36

      272MB        (2) 32M x 36     (2) 2M x 36

      288MB        (2) 4M x 36      (2) 32M x 36

      288MB        (2) 32M x 36     (2) 4M x 36

      320MB        (2) 8M x 36      (2) 32M x 36

      320MB        (2) 32M x 36     (2) 8M x 36

      384MB        (2) 16M x 36     (2) 32M x 36

      384MB        (2) 32M x 36     (2) 16M x 36

      512MB        (2) 32M x 36     (2) 32M x 36

                            CACHE CONFIGURATION

    Size        Bank 0        Bank 1          TAG              SL2

   256KB       (4) 32K x    (4) 32K x 8    (1) 8K or         Card not
                  8                        (1) 32K x        installed
                                               8

   256KB         NONE          NONE          NONE        Card installed

   512KB       (4) 64K x    (4) 64K x 8    (1) 8K or         Card not
                  8                        (1) 32K x        installed
                                               8

   512KB         NONE          NONE          NONE        Card installed

    1MB       (4) 128K x     (4) 128K x    (1) 8K or         Card not
                  8              8         (1) 32K x        installed
                                               8

    1MB          NONE          NONE          NONE        Card installed

                  CACHE JUMPER CONFIGURATION

        Size                 JP10                 JP11

        256KB          pins 1 & 2 closed   pins 1 & 2 closed

        512KB          pins 2 & 3 closed   pins 1 & 2 closed

         1MB           pins 2 & 3 closed   pins 2 & 3 closed

                         CACHE TYPE CONFIGURATION

     Type           JP6            JP7            JP8            JP9

  3.3v cache        Open           Open         Closed          Closed

   Mixed mode      Closed         Closed         Open            Open
     cache

                          CPU SPEED CONFIGURATION

      Speed              JP12              JP13               JP14

      75MHz           pins 2 & 3         pins 2 & 3         pins 1 & 2
                        closed            closed             closed

      90MHz           pins 1 & 2         pins 2 & 3         pins 1 & 2
                        closed            closed             closed

      100MHz          pins 2 & 3         pins 1 & 2         pins 1 & 2
                        closed            closed             closed

      120MHz          pins 1 & 2         pins 2 & 3         pins 1 & 2
                        closed            closed             closed

      133MHz          pins 2 & 3         pins 1 & 2         pins 1 & 2
                        closed            closed             closed

      150MHz          pins 1 & 2         pins 2 & 3         pins 1 & 2
                        closed            closed             closed

      166MHz          pins 2 & 3         pins 1 & 2         pins 1 & 2
                        closed            closed             closed

  CPU CLOCK SPEED CONFIGURATION

   Speed      JP20        JP21

   1.5x       Open        Open

    2x        Open       Closed

   2.5x      Closed      Closed

    3x       Closed       Open

         VOLTAGE REGULATOR CONFIGURATION

   Type      JP22      JP23      JP28      JP29

  STD/VR    Closed     Open     Closed     Open

   VRE       Open     Closed     Open     Closed

                   VOLTAGE REGULATOR TYPE CONFIGURATION

     Setting          JP32          JP33          JP34           JP35

  Not installed      Closed        Closed        Closed         Closed

    Installed         Open          Open          Open           Open

  Note: The location of the above jumpers are unidentified.

                    UART/IR CONFIGURATION

        Speed                JP1A                 JP1B

        UART2          pins 1 & 2 closed   pins 1 & 2 closed

         IR            pins 2 & 3 closed   pins 2 & 3 closed

