ASUS COMPUTER INTERNATIONAL
===========================

   P/I-P55TP4XE REV 2.1

   Processor    Pentium                                           
   Processor    75/90/100/120/133MHz                              
   Speed        
   Chip Set     SMC                                               
   Max. Onboard 128MB                                             
   DRAM         
   Cache        256/512KB                                         
   BIOS         Award                                             
   Dimensions   254mm x 218mm                                     
   I/O Options  PS/2 mouse port, parallel port, serial ports (2), 
                32-bit VESA local bus slots (4), green PC         
                connector, floppy drive interface, IDE interfaces 
                (2), Media slot, cache slot                       
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/A-B/32926-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose        | Location  |
   |--------------------+----------+----------------+-----------|
   | Serial port 1      |   CN1    | Power LED &    | JP16 pins |
   |                    |          | keylock        |  6 - 10   |
   |--------------------+----------+----------------+-----------|
   | Serial port 2      |   CN2    | Reset switch   | JP16 pins |
   |                    |          |                |  11 & 12  |
   |--------------------+----------+----------------+-----------|
   | Parallel port      |   CN3    | Green PC       | JP16 pins |
   |                    |          | connector      |  16 & 17  |
   |--------------------+----------+----------------+-----------|
   | Floppy drive       |   CN4    | Turbo LED      | JP16 pins |
   | interface          |          |                |  18 & 19  |
   |--------------------+----------+----------------+-----------|
   | IDE interface 1    |   CN5    | IDE interface  |   JP17    |
   |                    |          | LED            |           |
   |--------------------+----------+----------------+-----------|
   | IDE interface 2    |   CN6    | 32-bit PCI     | PC1 - PC4 |
   |                    |          | slots          |           |
   |--------------------+----------+----------------+-----------|
   | PS/2 mouse         |   CN7    | Media slot     |    SL1    |
   | interface          |          |                |           |
   |--------------------+----------+----------------+-----------|
   | Speaker            |   JP16   | External cache |    SL2    |
   |                    | pins 1 - | card           |           |
   |                    |    4     |                |           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |          Function           |  Jumper  |     Position      |
   |-----------------------------+----------+-------------------|
   |>> | On board I/O enabled    |   JP4    | pins 1 & 2 closed |
   |---+-------------------------+----------+-------------------|
   |   | On board 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 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |        NONE        |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |        NONE        |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       32MB       |        NONE        |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M 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) 8M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       64MB       |        NONE        |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |  Bank 1   |     TAG      |    SL2    |
   |-------+-------------+-----------+--------------+-----------|
   | 256KB | (4) 32K x 8 | (4) 32K x | (1) 8K, 16K, |   NONE    |
   |       |             |     8     |   32K x 8    |           |
   |-------+-------------+-----------+--------------+-----------|
   | 256KB |    NONE     |   NONE    |     NONE     |   Card    |
   |       |             |           |              | installed |
   |-------+-------------+-----------+--------------+-----------|
   | 512KB | (4) 64K x 8 | (4) 64K x | (1) 16K, 32K |   NONE    |
   |       |             |     8     |     x 8      |           |
   |-------+-------------+-----------+--------------+-----------|
   | 512KB |    NONE     |   NONE    |     NONE     |   Card    |
   |       |             |           |              | installed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |            Size            |             JP12              |
   |----------------------------+-------------------------------|
   |           256KB            |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           512KB            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | Speed  |      JP26       |      JP27      |      JP28      |
   |--------+-----------------+----------------+----------------|
   | 75MHz  |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 90MHz  |   pins 2 & 3    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 100MHz |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 120MHz |   pins 2 & 3    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 133MHz |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Speed       |        JP14        |       JP15        |
   |-------------------+--------------------+-------------------|
   |       1.5x        |        Open        |       Open        |
   |-------------------+--------------------+-------------------|
   |        2x         |        Open        |      Closed       |
   |-------------------+--------------------+-------------------|
   |       2.5x        |       Closed       |      Closed       |
   |-------------------+--------------------+-------------------|
   |        3x         |       Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              VOLTAGE REGULATOR CONFIGURATION               |
   |------------------------------------------------------------|
   |    Setting    |     JP22      |     JP23      |    JP24    |
   |---------------+---------------+---------------+------------|
   |    STD/VR     |    Closed     |     Open      |    Open    |
   |---------------+---------------+---------------+------------|
   |      VRE      |     Open      |    Closed     |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Setting       |        JP5        |        JP6        |
   |--------------------+-------------------+-------------------|
   |  Normal operation  | pins 1 & 2 closed | pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |    Programming     | pins 2 & 3 closed | pins 2 & 3 closed |
   |     operation      |                   |                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   |    Setting    |    JP1     |    JP2     |       JP3        |
   |---------------+------------+------------+------------------|
   | COM2 enabled  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2, 3 &  |
   |               |   closed   |   closed   |     4 closed     |
   |---------------+------------+------------+------------------|
   | Infrared (IR) | pins 2 & 3 | pins 2 & 3 |    pins 2 & 3    |
   |               |   closed   |   closed   |      closed      |
   +------------------------------------------------------------+