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

   SI54A

   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  32-bit PCI slots (4), floppy drive interface, IDE 
                interfaces (2), parallel port, serial ports (2)   
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/P-R/32744-1.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        |    J8    | IDE interface |   LED2   |
   | (secondary)          |          | LED           |          |
   |----------------------+----------+---------------+----------|
   | IDE interface        |    J9    | 32-bit PCI    |  PCI -   |
   | (primary)            |          | slots         |   PC4    |
   |----------------------+----------+---------------+----------|
   | Turbo switch         |   J10    |               |          |
   |------------------------------------------------------------|
   | Note: The location of LED1 is unidentified.                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 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    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP9   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Cache invalidation select always |  JP13  | pins 1 & 2 |
   |   | invalidated                      |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache invalidation select writes |  JP13  | pins 2 & 3 |
   |   | to invalidated                   |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache write select write back    |  JP14  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache write select write through |  JP14  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP15  |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP16  |    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        |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       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        |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 16M x 36    |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |                 Type                  |        JP7         |
   |---------------------------------------+--------------------|
   |        Single side SIMMs only         | pins 2 & 3 closed  |
   |---------------------------------------+--------------------|
   | Bank 0 = single side SIMMs & Bank 1 = | pins 1 & 2, 3 & 4  |
   |           double side SIMMs           |       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 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Type            |              JP6              |
   |----------------------------+-------------------------------|
   |           EPROM            |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |          Flash 5v          |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |         Flash 12v          |       pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DACK/DRQ CONFIGURATION                   |
   |------------------------------------------------------------|
   |     DACK/DRQ     |        JP1         |        JP2         |
   |------------------+--------------------+--------------------|
   |    DACK1/DRQ1    | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    DACK3/DRQ3    | pins 2 & 3 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+