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       # ELITEGROUP COMPUTER SYSTEMS, INC.
       
          SI54P VIO
       
          Processor    Pentium                                           
          Processor    75/90/100MHz                                      
          Speed        
          Chip Set     SIS                                               
          Max. Onboard 128MB                                             
          DRAM         
          Cache        256/512/1024KB                                    
          BIOS         Phoenix                                           
          Dimensions   330mm x 218mm                                     
          I/O Options  Floppy drive interface, green PC connector, IDE   
                       interfaces (2), parallel port, PS/2 mouse port,   
                       serial ports (2), VGA feature connector, VGA      
                       port, riser slot                                  
          NPU Options  None                                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose           | Location  |
          |-----------------+----------+-------------------+-----------|
          | Parallel port   |    J1    | 3.3v connector    |    J14    |
          |-----------------+----------+-------------------+-----------|
          | Serial port 2   |    J2    | IDE interface LED |   JP15    |
          |-----------------+----------+-------------------+-----------|
          | Serial port 1   |    J3    | Turbo LED         | JP21 pins |
          |                 |          |                   |   2 - 3   |
          |-----------------+----------+-------------------+-----------|
          | VGA port        |    J5    | Green PC          | JP21 pins |
          |                 |          | connector         |   4 - 5   |
          |-----------------+----------+-------------------+-----------|
          | PS/2 mouse port |    J6    | Turbo switch      | JP21 pins |
          |                 |          |                   |   6 - 7   |
          |-----------------+----------+-------------------+-----------|
          | VGA feature     |    J8    | Reset switch      | JP21 pins |
          | connector       |          |                   |  9 - 10   |
          |-----------------+----------+-------------------+-----------|
          | Floppy drive    |   J11    | Power LED &       | JP21 pins |
          | interface       |          | keylock           |  11 - 15  |
          |-----------------+----------+-------------------+-----------|
          | IDE interface   |   J12    | Speaker           | JP21 pins |
          | (secondary)     |          |                   |  17 - 20  |
          |-----------------+----------+-------------------+-----------|
          | IDE interface   |   J13    | Riser Card        |    SL1    |
          | (primary)       |          |                   |           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Jumper |   Position   |
          |------------------------------------+--------+--------------|
          | » | Video memory type select fast  |  JP1   |  pins 1 & 2  |
          |   | page mode                      |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Video memory type select       |  JP1   |  pins 2 & 3  |
          |   | extended data out mode         |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | SMC 37C665 signal enabled      |  JP4   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | SMC 37C665 signal disabled     |  JP4   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | BIOS type select EPROM         |  JP5   |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | BIOS type select 5v flash      |  JP5   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | BIOS type select 12v flash     |  JP5   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | CMOS memory normal operation   |  JP6   |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | CMOS memory clear              |  JP6   |    Closed    |
          |---+--------------------------------+--------+--------------|
          | » | Parity check enabled           |  JP12  |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Parity check disabled          |  JP12  |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | IDE interface enabled          |  JP13  |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | IDE interface disabled         |  JP13  |    Closed    |
          |---+--------------------------------+--------+--------------|
          | » | DRAM type select single side   |  JP14  |  pins 2 & 3  |
          |   | in both banks                  |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | DRAM type select double side   |  JP14  | pins 1 & 2,  |
          |   | in bank 2 & single side in     |        | 3 & 4 closed |
          |   | bank 1                         |        |              |
          |---+--------------------------------+--------+--------------|
          | » | Cache type select write back   |  JP17  |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | Cache type select write        |  JP17  |  pins 2 & 3  |
          |   | through                        |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | CPU write to always            |  JP18  |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | CPU write to invalidate        |  JP18  |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | CPU next address disabled      |  JP19  |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | CPU next address enabled       |  JP19  |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | Factory configured - do not    |  JP20  |     N/A      |
          |   | alter                          |        |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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        |
          |------------------+--------------------+--------------------|
          |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 16M x 36    |        NONE        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (2) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   512KB    |  (4) 64K x 8  |  (4) 64K x 8  |  (2) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |    1MB     | (4) 128K x 8  | (4) 128K x 8  |  (2) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size        |        JP10        |       JP11        |
          |-------------------+--------------------+-------------------|
          |       256KB       |        Open        |       Open        |
          |-------------------+--------------------+-------------------|
          |       512KB       |       Closed       |       Open        |
          |-------------------+--------------------+-------------------|
          |        1MB        |       Closed       |      Closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |          Speed           |              JP16               |
          |--------------------------+---------------------------------|
          |          75MHz           |        pins 1 & 2 closed        |
          |--------------------------+---------------------------------|
          |          90MHz           |    pins 1 & 2, 5 & 6 closed     |
          |--------------------------+---------------------------------|
          |          100MHz          | pins 1 & 2, 3 & 4, 5 & 6 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DACK/DRQ CONFIGURATION                   |
          |------------------------------------------------------------|
          |     DACK/DRQ     |        JP8         |        JP9         |
          |------------------+--------------------+--------------------|
          |    DACK1/DRQ1    | pins 1 & 2 closed  | pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |    DACK3/DRQ3    | pins 2 & 3 closed  | pins 2 & 3 closed  |
          +------------------------------------------------------------+