RELIALOGIC CORPORATION PRIVATE, LTD.
====================================

   SI54AEIO

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

<gopher://bitreich.org/I/th99/m/P-R/32939-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J4    | Reset switch     |   J11    |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J5    | Speaker          |   J12    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J6    | Power LED &      |   J13    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |    J7    | Turbo LED        |   LED1   |
   | interface         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 2   |    J8    | IDE interface    |   LED2   |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 1   |    J9    | 32-bit PCI slots |  PC1 -   |
   |                   |          |                  |   PC4    |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |   J10    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | On board I/O enabled             |  JP3   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | On board I/O disabled            |  JP3   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | IDE interface enabled            |  JP4   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | IDE interface disabled           |  JP4   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Parity check enabled             |  JP5   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Parity check disabled            |  JP5   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | BIOS type select EPROM           |  JP6   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | BIOS type select flash BIOS 5v   |  JP6   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | BIOS type select flash BIOS 12v  |  JP6   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache always invalidated         |  JP13  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache write to invalidated       |  JP13  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache type select write back     |  JP14  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache type select write through  |  JP14  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP15  |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP17  |    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        |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K 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        |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 16M x 36    |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |            Type             |             JP7              |
   |-----------------------------+------------------------------|
   |      Single side only       |      pins 2 & 3 closed       |
   |-----------------------------+------------------------------|
   |   Single and double side    |   pins 1 & 2, 3 & 4 closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    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        |        JP11        |       JP12        |
   |-------------------+--------------------+-------------------|
   |       256KB       |        Open        |       Open        |
   |-------------------+--------------------+-------------------|
   |       512KB       |       Closed       |      Closed       |
   |-------------------+--------------------+-------------------|
   |        1MB        |       Closed       |      Closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |          Speed           |               JP8               |
   |--------------------------+---------------------------------|
   |          75MHz           | pins 2 & 3, 5 & 6, 7 & 8 closed |
   |--------------------------+---------------------------------|
   |          90MHz           | pins 2 & 3, 4 & 5, 8 & 9 closed |
   |--------------------------+---------------------------------|
   |          100MHz          | pins 1 & 2, 5 & 6, 7 & 8 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CONFIGURATION                      |
   |------------------------------------------------------------|
   |       DMA        |        JP1         |        JP2         |
   |------------------+--------------------+--------------------|
   |       DMA1       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |       DMA3       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+