
ASUS COMPUTER INTERNATIONAL

P/I-P55TP4XE (REV. 1.21)

Processor           Pentium
Processor Speed     75/90/100/120/133/150/166/180/200MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     128MB (EDO supported)
Memory
Maximum Video       None
Memory
Cache               256/512KB
BIOS                Award
Dimensions          330mm 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), cache slot, IR
                    connector, VRM connector, MediaBus slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Serial port 1             CN1        Power LED &          CN8 pins 11 -
                                       keylock                   15

  Serial port 2             CN2        Speaker              CN8 pins 17 -
                                                                 20

  Parallel port             CN3        IDE interface LED        JP17

  Floppy drive              CN4        Chassis fan power        JP30
  interface

  IDE interface 1           CN5        IR connector             JP31

  IDE interface 2           CN6        32-bit PCI slots       PC1 - PC4

  PS/2 mouse                CN7        MediaBus slot             SL1
  interface

  Turbo LED             CN8 pins 2 &   Cache slot                SL2
                             3

  Green PC connector    CN8 pins 4 &   VRM connector             VRM
                             5

  Reset switch          CN8 pins 9 &
                            10

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     On board multi I/O enabled              JP4           Pins 1 & 2
                                                              closed

      On board multi I/O disabled             JP4           Pins 2 & 3
                                                              closed

     PS/2 mouse disabled                     JP7           Pins 2 & 3
                                                              closed

      PS/2 mouse enabled                      JP7           Pins 1 & 2
                                                              closed

     CMOS memory normal operation            JP13             Open

      CMOS memory clear                       JP13            Closed

  Note: If the multi I/O chip is a UM8669F, JP4 is not used. It is
  enabled or disabled through the BIOS.

                            DRAM CONFIGURATION

          Size                    Bank 0                   Bank 1

           8MB                 (2) 1M x 32                  None

          16MB                 (2) 2M x 32                  None

          16MB                 (2) 1M x 32              (2) 1M x 32

          24MB                 (2) 2M x 32              (2) 1M x 32

          32MB                 (2) 4M x 32                  None

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

          40MB                 (2) 4M x 32              (2) 1M x 32

          48MB                 (2) 4M x 32              (2) 2M x 32

          64MB                     None                 (2) 8M x 32

          64MB                 (2) 4M x 32              (2) 4M x 32

          72MB                 (2) 8M x 32              (2) 1M x 32

          80MB                 (2) 8M x 32              (2) 2M x 32

          96MB                 (2) 8M x 32              (2) 4M x 32

          128MB                (2) 8M x 32              (2) 8M x 32

  Note: Board accepts EDO memory. Board also accepts x 36 SIMMs. Banks
  are interchangeable.

                            CACHE CONFIGURATION

    Size        Bank 0      Bank 1          TAG               SL2

  256KB (A)    (4) 32K x   (4) 32K x    (1) 8K/32K x     Not installed
                  8            8             8

  256KB (B)      None        None           None          256KB module
                                                           Installed

  512KB (A)    (4) 64K x   (4) 64K x    (1) 8K/32K x     Not installed
                  8            8             8

  512KB (B)      None        None           None          512KB module
                                                           Installed

        CACHE JUMPER CONFIGURATION

        Size                 JP12

      256KB (A)       Pins 2 & 3 closed

      256KB (B)              Open

      512KB (A)       Pins 1 & 2 closed

      512KB (B)              Open

                            CACHE CONFIGURATION

                   Type                                 JP16

         Asynchronous cache enabled              Pins 1 & 2 closed

          Asynchronous cache disabled             Pins 2 & 3 closed

                        CACHE VOLTAGE CONFIGURATION

    Voltage           JP8           JP9           JP10           JP11

  Mixed voltage     Closed         Closed         Open           Open

      3.3v           Open           Open         Closed         Closed

                            CPU SPEED SELECTION

    CPU     Clock    Multiplier    JP14      JP15     JP26   JP27   JP28
  speed     speed

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

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

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

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

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

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

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

  180MHz    60MHz        3x        Closed    Open     2 &     2 &   1 & 2
                                                       3      3

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

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

       Voltage              JP22              JP23              JP24

    3.3v (STD/VR)          Closed             Open              Open

  3.4v - 3.6v (VRE)         Open             Closed             Open

                           CPU VOLTAGE SELECTION

     Setting           JP18          JP19          JP20          JP21

      VRM not         Closed        Closed        Closed        Closed
    installed

  VRM installed        Open          Open          Open          Open

  Note: JP18 - JP21 are located on the VRM module.

                          SERIAL PORT 2 SELECTION

           Setting                     JP1                    JP2

          Used as COM2         Pins 1 & 2 closed      Pins 1 & 2 closed

       Used as IR connector     Pins 2 & 3 closed      Pins 2 & 3 closed

                           FLASH BIOS SELECTION

            Setting                      JP5                  JP6

     Flash BIOS normal           Pins 1 & 2 closed    Pins 2 & 3 closed
      operation

      Flash BIOS programming      Pins 2 & 3 closed    Pins 2 & 3 closed
      enabled

