(TXT) View Source
       
       # EFA CORPORATION
       
          P55TPIO-B/P55TSPIO-B
       
          Processor        CX M1/Pentium                                 
          Processor Speed  75/90/100/120/133/150/166/200MHz              
          Chip Set         Intel                                         
          Video Chip Set   None                                          
          Maximum Onboard  128MB                                         
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            256/512KB                                     
          BIOS             Award                                         
          Dimensions       290mm x 220mm                                 
          I/O Options      32-bit PCI slots (3), floppy drive interface, 
                           green PC connector, IDE interfaces (2),       
                           parallel port, serial ports (2), audio bus    
                           slot, VRM connector                           
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |    J2    | IDE interface    |   J14    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |    J3    | Green PC         |   J15    |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |    J6    | Turbo LED        |   J16    |
          | interface         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Parallel port     |    J7    | Turbo switch     |   J17    |
          |-------------------+----------+------------------+----------|
          | IDE interface 2   |    J8    | Reset switch     |   J18    |
          |-------------------+----------+------------------+----------|
          | IDE interface 1   |    J9    | 32-bit PCI slots |  PC1 -   |
          |                   |          |                  |   PC3    |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J12    | Audio bus slot   |   SL1    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   J13    | VRM connector    |   VRM    |
          | keylock           |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              | Label |    Position    |
          |-----------------------------------+-------+----------------|
          |   | Sound interface enabled       |  JP2  |      Open      |
          |---+-------------------------------+-------+----------------|
          |   | Sound interface disabled      |  JP2  |     Closed     |
          |---+-------------------------------+-------+----------------|
          | » | Flash BIOS voltage select 5v  |  JP5  |   Pins 1 & 2   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | Flash BIOS voltage select 12v |  JP5  |   Pins 2 & 3   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          | » | CMOS memory normal operation  | JP12  |      Open      |
          |---+-------------------------------+-------+----------------|
          |   | CMOS memory clear             | JP12  |     Closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       4MB        |   (2) 512K x 36    |        None        |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       12MB       |    (2) 1M x 36     |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       20MB       |    (2) 2M x 36     |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       36MB       |    (2) 4M x 36     |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 1M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       68MB       |    (2) 8M x 36     |   (2) 512K x 36    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       68MB       |   (2) 512K x 36    |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          |------------------------------------------------------------|
          | Note: Board also accepts x 32 SIMMs.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size   |    Bank 0     |    Bank 1     |       TAG       |
          |----------+---------------+---------------+-----------------|
          |  256KB   | (2) 32K x 32  |     None      | (1) 16K/32K x 8 |
          |----------+---------------+---------------+-----------------|
          |  512KB   | (2) 32K x 32  | (2) 32K x 32  | (1) 16K/32K x 8 |
          |------------------------------------------------------------|
          | Note: The location of the TAG is unidentified.             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          | Speed  |       JP3       |      JP4       |      JP11      |
          |--------+-----------------+----------------+----------------|
          | 75MHz  |   Pins 2 & 3    |   Pins 2 & 3   |   Pins 1 & 2   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 90MHz  |   Pins 2 & 3    |   Pins 1 & 2   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 100MHz |   Pins 1 & 2    |   Pins 2 & 3   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 120MHz |   Pins 2 & 3    |   Pins 1 & 2   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 133MHz |   Pins 1 & 2    |   Pins 2 & 3   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 150MHz |   Pins 2 & 3    |   Pins 2 & 3   |   Pins 1 & 2   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 166MHz |   Pins 1 & 2    |   Pins 2 & 3   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 180MHz |   Pins 2 & 3    |   Pins 1 & 2   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          |--------+-----------------+----------------+----------------|
          | 200MHz |   Pins 1 & 2    |   Pins 2 & 3   |   Pins 2 & 3   |
          |        |     closed      |     closed     |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU MULTIPLIER SELECTION (CYRIX)              |
          |------------------------------------------------------------|
          |    Multiplier    |        JP7         |        JP8         |
          |------------------+--------------------+--------------------|
          |        1x        | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |        2x        | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |        3x        | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |        4x        | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU MULTIPLIER SELECTION (INTEL)              |
          |------------------------------------------------------------|
          |    Multiplier    |        JP7         |        JP8         |
          |------------------+--------------------+--------------------|
          |       1.5x       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |        2x        | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |       2.5x       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |        3x        | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          |          Voltage           |             JP10              |
          |----------------------------+-------------------------------|
          |         3.3v (STD)         |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |         3.4v (VR)          |       Pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |         3.5v (VRE)         |       Pins 4 & 5 closed       |
          |----------------------------+-------------------------------|
          |         3.3v/2.5v          |         VRM installed         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       VRM SELECTION                        |
          |------------------------------------------------------------|
          |   Type    |                      VRM                       |
          |-----------+------------------------------------------------|
          | All P54C  | Pins 17 & 19, 18 & 20, 21 & 23, 22 & 24 closed |
          |-----------+------------------------------------------------|
          |   P55C    |                 VRM installed                  |
          +------------------------------------------------------------+