
ASUS COMPUTER INTERNATIONAL

TXP4-X (REV. 1.01)

Device Type         Mainboard
Processor           CX 6X86/IBM 6X86/CX 686MX/IBM 6X86MX/AM K5/

                    AM K6/Pentium/Pentium MMX
Processor Speed     75/90/100/120/133/150/166/200/233MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     256MB (EDO & SDRAM supported)
Memory
Maximum Video       None
Memory
Cache               512KB
BIOS                Unidentified
Dimensions          305mm x 244mm
I/O Options         32-bit PCI slots (4), floppy drive interface, green PC
                    connector, IDE interfaces (2), parallel port, PS/2
                    mouse port, serial ports (2), IR connector, USB
                    connectors (2), ATX power connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  ATX power                ATX         Parallel port             CN1
  connector

  Power LED &          C1/pins 1 - 5   Serial port 2             CN2
  keylock

  Speaker               C1/pins 7 -    Serial port 1             CN3
                            10

  Message LED          C1/pins 12 &    USB connector 1           CN4
                            13

  Green PC connector   C1/pins 14 &    USB connector 2           CN5
                            15

  Soft off power       C1/pins 16 &    PS/2 mouse port           CN6
  supply                    17

  Reset switch         C1/pins 19 &    Floppy drive              CN7
                            20         interface

  IDE interface LED         C2         IDE interface 2           CN8

  Chassis fan power         C3         IDE interface 1           CN9

  Chassis fan power         C4         IR connector              IR1

  CPU fan power             C5         32-bit PCI slots       PC1  PC4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     On board I/O enabled                    MIO           Pins 1 & 2
                                                              closed

      On board I/O disabled                   MIO           Pins 2 & 3
                                                              closed

     CMOS memory normal operation            RTC           Pins 1 & 2
                                                              closed

      CMOS memory clear                       RTC           Pins 2 & 3
                                                              closed

              SIMM CONFIGURATION

      Size          Bank 0          Bank 1

      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 0          Bank 1

     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 2          Bank 3

      8MB         (1) 1M x 64        None

      16MB        (1) 2M x 64        None

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

      24MB        (1) 2M x 64     (1) 1M x 64

      32MB        (1) 4M x 64        None

      32MB        (1) 2M x 64     (1) 2M x 64

      40MB        (1) 4M x 64     (1) 1M x 64

      48MB        (1) 4M x 64     (1) 2M x 64

      64MB        (1) 8M x 64        None

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

      72MB        (1) 8M x 64     (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64

            Note: Board accepts SDRAM memory.

      CACHE CONFIGURATION

      Size          Bank 0

     512KB       (2) 64K x 32

                       CPU SPEED SELECTION (CX 6X86)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (IBM 6X86)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (CX 6X86MX)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

  Note: Pins designated should be in the closed position.

                     CPU SPEED SELECTION (IBM 6X86MX)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

    CPU      Clock   Multiplier     BF0   BF1    BF2    FS0    FS1   FS2
  speed     speed

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

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

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

  Note: Pins designated should be in the closed position.

                      CPU VOLTAGE SELECTION (SINGLE)

    Voltage          VID0           VID1            VID2          VID3

     3.4v         Pins 2 & 3      Pins 2 & 3     Pins 2 & 3       Open
                    closed         closed          closed

     3.5v         Pins 1 & 2      Pins 2 & 3     Pins 2 & 3       Open
                    closed         closed          closed

                       CPU VOLTAGE SELECTION (DUAL)

    Voltage         VID0           VID1          VID2            VID3

     1.8v           Open           Open          Open         Pins 1 & 2
                                                                closed

     1.9v           Open           Open          Open         Pins 2 & 3
                                                                closed

     2.5v        Pins 1 & 2     Pins 2 & 3     Pins 1 & 2        Open
                   closed         closed        closed

     2.7v        Pins 1 & 2     Pins 1 & 2     Pins 1 & 2        Open
                   closed         closed        closed

     2.8v        Pins 2 & 3     Pins 2 & 3     Pins 2 & 3        Open
                   closed         closed        closed

     2.9v        Pins 1 & 2     Pins 2 & 3     Pins 2 & 3        Open
                   closed         closed        closed

     3.2v        Pins 2 & 3     Pins 2 & 3     Pins 1 & 2        Open
                   closed         closed        closed

