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       # SOYO COMPUTER CO., LTD.
       
          5EA5/A5C
       
          Processor        CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM           
                           K6/Pentium                                    
          Processor Speed  75/90/100/120/133/150/166/180/200/233/266MHz  
          Chip Set         Unidentified                                  
          Video Chip Set   None                                          
          Maximum Onboard  256MB (EDO supported)                         
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            512KB                                         
          BIOS             Unidentified                                  
          Dimensions       254mm x 218mm                                 
          I/O Options      32-bit PCI slots (3), floppy drive interface, 
                           green PC connector, IDE interfaces (2),       
                           parallel port, PS/2 mouse port, serial ports  
                           (2), IR connector, USB connector              
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |   CN1    | Serial port 1    |   CN9    |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   CN2    | Power LED &      |   J17    |
          | interface         |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | USB connector     |   CN3    | Speaker          |   J18    |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   CN4    | Reset switch     |   J19    |
          |-------------------+----------+------------------+----------|
          | IR connector      |   CN5    | Green PC         |   J23    |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN6    | IDE interface    |   J24    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | IDE interface 2   |   CN7    | 32-bit PCI slots |  PC1 -   |
          |                   |          |                  |   PC3    |
          |-------------------+----------+------------------+----------|
          | IDE interface 1   |   CN8    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function             | Label |    Position     |
          |----------------------------------+-------+-----------------|
          | » | CMOS memory normal operation |  JP5  |   Pins 1 & 2    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | CMOS memory clear            |  JP5  |   Pins 2 & 3    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          | » | PCI bus select synchronous   | JP16  |   Pins 1 & 2    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | PCI bus select asynchronous  | JP16  |   Pins 2 & 3    |
          |   |                              |       |     closed      |
          |---+------------------------------+-------+-----------------|
          |   | EMI signals disabled         | JP25  |     Closed      |
          |---+------------------------------+-------+-----------------|
          |   | EMI signals enabled          | JP25  |      Open       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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     |
          |---------------+----------------------+---------------------|
          |     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. Banks are interchangeable. |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            8MB             |          (1) 1M x 64          |
          |----------------------------+-------------------------------|
          |            16MB            |          (1) 2M x 64          |
          |----------------------------+-------------------------------|
          |            32MB            |          (1) 4M x 64          |
          |----------------------------+-------------------------------|
          |            64MB            |          (1) 8M x 64          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |        TAG         |
          |------------------+--------------------+--------------------|
          |      512KB       |    (2) 64K x 32    |    (1) 16K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            CPU SPEED SELECTION (CX 6X86/6X 86L)            |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|JP10 |JP11 |JP12 | JP13 |JP14|
          |         |  speed  |          |     |     |     |      |    |
          |---------+---------+----------+-----+-----+-----+------+----|
          | 120MHz  |  50MHz  |    2x    |2 & 3|2 & 3|2 & 3|Closed|Open|
          |---------+---------+----------+-----+-----+-----+------+----|
          | 133MHz  |  55MHz  |    2x    |1 & 2|2 & 3|2 & 3|Closed|Open|
          |---------+---------+----------+-----+-----+-----+------+----|
          | 150MHz  |  60MHz  |    2x    |1 & 2|2 & 3|2 & 3|Closed|Open|
          |---------+---------+----------+-----+-----+-----+------+----|
          | 166MHz  |  66MHz  |    2x    |2 & 3|1 & 2|2 & 3|Closed|Open|
          |---------+---------+----------+-----+-----+-----+------+----|
          | 200MHz  |  75MHz  |    2x    |1 & 2|2 & 3|1 & 2|Closed|Open|
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (CX 6X86MX)               |
          |------------------------------------------------------------|
          |  CPU  |  Clock  |Multiplier|JP10 |JP11 |JP12 | JP13 | JP14 |
          | speed |  speed  |          |     |     |     |      |      |
          |-------+---------+----------+-----+-----+-----+------+------|
          |166MHz |  66MHz  |   2.5x   |2 & 3|2 & 3|1 & 2|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |200MHz |  66MHz  |   2.5x   |2 & 3|1 & 2|2 & 3|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |233MHz |  66MHz  |    3x    |2 & 3|1 & 2|2 & 3| Open |Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |233MHz |  75MHz  |   2.5x   |1 & 2|2 & 3|1 & 2|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |266MHz |  75MHz  |    3x    |1 & 2|2 & 3|1 & 2| Open |Closed|
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K5)                 |
          |------------------------------------------------------------|
          |  CPU  |  Clock  |Multiplier|JP10 |JP11 |JP12 | JP13 | JP14 |
          | speed |  speed  |          |     |     |     |      |      |
          |-------+---------+----------+-----+-----+-----+------+------|
          | 75MHz |  50MHz  |   1.5x   |2 & 3|2 & 3|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          | 90MHz |  60MHz  |   1.5x   |1 & 2|2 & 3|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |100MHz |  66MHz  |   1.5x   |2 & 3|1 & 2|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |120MHz |  60MHz  |   1.5x   |1 & 2|2 & 3|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |133MHz |  66MHz  |   1.5x   |2 & 3|1 & 2|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |150MHz |  60MHz  |    2x    |1 & 2|2 & 3|2 & 3|Closed| Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |166MHz |  66MHz  |   2.5x   |2 & 3|1 & 2|2 & 3|Closed|Closed|
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K6)                 |
          |------------------------------------------------------------|
          |  CPU  |  Clock  |Multiplier|JP10 |JP11 |JP12 | JP13 | JP14 |
          | speed |  speed  |          |     |     |     |      |      |
          |-------+---------+----------+-----+-----+-----+------+------|
          |150MHz |  60MHz  |    2x    |1 & 2|2 & 3|2 & 3|Closed| Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |166MHz |  66MHz  |   2.5x   |2 & 3|1 & 2|2 & 3|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |200MHz |  66MHz  |    3x    |2 & 3|1 & 2|2 & 3| Open |Closed|
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (INTEL)                 |
          |------------------------------------------------------------|
          |  CPU  |  Clock  |Multiplier|JP10 |JP11 |JP12 | JP13 | JP14 |
          | speed |  speed  |          |     |     |     |      |      |
          |-------+---------+----------+-----+-----+-----+------+------|
          | 75MHz |  50MHz  |   1.5x   |2 & 3|2 & 3|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          | 90MHz |  60MHz  |   1.5x   |1 & 2|2 & 3|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |100MHz |  66MHz  |   1.5x   |2 & 3|1 & 2|2 & 3| Open | Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |120MHz |  60MHz  |    2x    |1 & 2|2 & 3|2 & 3|Closed| Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |133MHz |  66MHz  |    2x    |2 & 3|1 & 2|2 & 3|Closed| Open |
          |-------+---------+----------+-----+-----+-----+------+------|
          |150MHz |  60MHz  |   2.5x   |1 & 2|2 & 3|2 & 3|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |166MHz |  66MHz  |   2.5x   |2 & 3|1 & 2|2 & 3|Closed|Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |180MHz |  60MHz  |    3x    |1 & 2|2 & 3|2 & 3| Open |Closed|
          |-------+---------+----------+-----+-----+-----+------+------|
          |200MHz |  66MHz  |    3x    |2 & 3|1 & 2|2 & 3| Open |Closed|
          |------------------------------------------------------------|
          |Note: Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU VOLTAGE SELECTION (SINGLE)               |
          |------------------------------------------------------------|
          |      Voltage      |   JP30   |      JP31       |   JP32    |
          |-------------------+----------+-----------------+-----------|
          |       |   3.3v    |   Open   |  1 & 2, 3 & 4   |   1 & 2   |
          |-------+-----------+----------+-----------------+-----------|
          | »     |   3.52v   |   Open   |  1 & 2, 3 & 4   |   3 & 4   |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU VOLTAGE SELECTION (DUAL)                |
          |------------------------------------------------------------|
          |      Voltage      |      JP30       |   JP31   |   JP32    |
          |-------------------+-----------------+----------+-----------|
          | »     |   2.8v    |  1 & 2, 3 & 4   |   Open   |   5 & 6   |
          |-------+-----------+-----------------+----------+-----------|
          |       |   2.9v    |  1 & 2, 3 & 4   |   Open   |   7 & 8   |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+