EFA CORPORATION
===============

   P54CSPIO

   Processor    Pentium                                           
   Processor    75/90/100MHz                                      
   Speed        
   Chip Set     SIS                                               
   Max. Onboard 128MB                                             
   DRAM         
   Cache        256/512/1024KB                                    
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  32-bit PCI slots (4), floppy drive interface, IDE 
                interfaces (2), parallel port, PS/2 mouse port,   
                serial ports (2)                                  
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/E-H/32508-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Auxiliary         |    J1    | IDE interface    |   J11    |
   | keyboard & PS/2   |          | LED              |          |
   | mouse             |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J2    | Power LED &      |   J12    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J3    | Turbo LED        |   J13    |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J4    | Speaker          |   J14    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |    J6    | IR function      |   J17    |
   | interface         |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | IDE interface -   |    J7    | Reset switch     |   JP20   |
   | secondary         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | IDE interface -   |    J8    | Turbo switch     |   JP21   |
   | primary           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 3.3v CPU          |    J9    | 32-bit PCI slots |  PC1 -   |
   | connector         |          |                  |   PC4    |
   |-------------------+----------+------------------+----------|
   | External battery  |   J10    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP1   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP2   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP3   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | IDE disabled - controlled by     |  JP4   |   Closed   |
   |   | Sostware                         |        |            |
   |---+----------------------------------+--------+------------|
   |   | IDE enabled                      |  JP4   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | On board IDE is primary          |  JP5   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Other IDE is primary             |  JP5   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | On board IDE is secondary        |  JP6   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Other IDE is secondary           |  JP6   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP13  |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP16  |    Open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP17  | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP18  | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | BIOS type select EPROM           |  JP22  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | BIOS type select flash BIOS      |  JP22  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP23  |   Closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP24  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP24  |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP25  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP25  |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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        |
   |------------------+--------------------+--------------------|
   |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 1M 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        |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 16M x 36    |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |   Bank 0    |   Bank 1    |        JP7        |    JP8     |
   |-------------+-------------+-------------------+------------|
   | Single side | Single side | pins 1 & 2 closed | pins 1 & 2 |
   |             |             |                   |   closed   |
   |-------------+-------------+-------------------+------------|
   | Double side | Double side | pins 2 & 3 closed | pins 2 & 3 |
   |             |             |                   |   closed   |
   |-------------+-------------+-------------------+------------|
   | Double side | Single side | pins 2 & 3 closed | pins 2 & 3 |
   |             |             |                   |   closed   |
   |-------------+-------------+-------------------+------------|
   | Single side | Double side | pins 1 & 2 closed | pins 1 & 2 |
   |             |             |                   |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |        TAG         |
   |------------------+--------------------+--------------------|
   |      256KB       |    (8) 32K x 8     |    (1) 32K x 8     |
   |------------------+--------------------+--------------------|
   |      512KB       |    (8) 64K x 8     |    (1) 64K x 8     |
   |------------------+--------------------+--------------------|
   |       1MB        |    (8) 128K x 8    |    (1) 128K x 8    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Size       |        JP14        |        JP15        |
   |------------------+--------------------+--------------------|
   |      256KB       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      512KB       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |       1MB        | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | System | CPU speed |     JP11      |   JP12    |   JP19    |
   | speed  |           |               |           |           |
   |--------+-----------+---------------+-----------+-----------|
   | 50MHz  |   75MHz   |  pins 1 & 2   | pins 1 &  |   Open    |
   |        |           |    closed     | 2 closed  |           |
   |--------+-----------+---------------+-----------+-----------|
   | 50MHz  |  100MHz   |  pins 1 & 2   | pins 1 &  | pins 1 &  |
   |        |           |    closed     | 2 closed  | 2 closed  |
   |--------+-----------+---------------+-----------+-----------|
   | 60MHz  |   90MHz   |  pins 1 & 2   | pins 2 &  |   Open    |
   |        |           |    closed     | 3 closed  |           |
   |--------+-----------+---------------+-----------+-----------|
   | 66MHz  |  100MHz   |  pins 2 & 3   | pins 2 &  |   Open    |
   |        |           |    closed     | 3 closed  |           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CONFIGURATION                      |
   |------------------------------------------------------------|
   |   DMA channel    |        JP9         |        JP10        |
   |------------------+--------------------+--------------------|
   |    Channel 3     | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    Channel 5     | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+