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       # SIEMENS NIXDORF INFORMATIONSSYSTEME AG
       
          S26361-D756-X
       
          Processor        80486SX/80487SX/80486DX/80486DX2              
          Processor Speed  25/33/50(internal)/66(internal)MHz            
          Chip Set         Unidentified                                  
          Video Chip Set   Unidentified                                  
          Maximum Onboard  32MB                                          
          Memory           
          Maximum Video    1MB                                           
          Memory           
          Cache            64/128/256KB                                  
          BIOS             Unidentified                                  
          Dimensions       330mm x 218mm                                 
          I/O Options      Floppy drive interface, IDE interface,        
                           parallel port, PS/2 mouse port, serial ports  
                           (2), video feature connector, VGA port, riser 
                           slot                                          
          NPU Options      None                                          
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Front panel      |   CN1    | Serial port 2     |   J20    |
          | connector        |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |   J13    | Parallel port     |   J21    |
          |------------------+----------+-------------------+----------|
          | PS/2 mouse port  |   J15    | Video feature     |   J23    |
          |                  |          | connector         |          |
          |------------------+----------+-------------------+----------|
          | IDE interface    |   J17    | VGA port          |   J24    |
          |------------------+----------+-------------------+----------|
          | Floppy drive     |   J18    | External battery  |   JP8    |
          | interface        |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Serial port 1    |   J19    | Riser slot        |   SL1    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Internal battery enabled          |  JP8  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Internal battery disabled (CMOS   |  JP8  | Pins 2 & 3 |
          |   | memory clear)                     |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Monitor type select color         | JP10  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | Monitor type select monochrome    | JP10  |   Closed   |
          |---+-----------------------------------+-------+------------|
          | » | PS/2 mouse IRQ12 enabled          | JP11  |   Closed   |
          |---+-----------------------------------+-------+------------|
          |   | PS/2 mouse IRQ12 disabled         | JP11  |    Open    |
          |---+-----------------------------------+-------+------------|
          | » | On board video enabled            | JP25  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | On board video disabled           | JP25  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       64KB       |     (4) 8K x 8     |     (4) 8K x 8     |
          |------------------+--------------------+--------------------|
          |      128KB       |    (4) 32K x 8     |        None        |
          |------------------+--------------------+--------------------|
          |      256KB       |    (4) 32K x 8     |    (4) 32K x 8     |
          |------------------------------------------------------------|
          | Note: The locations of banks 0 & 1 are unidentified.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CACHE TAG CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Size    |      U48      |      U49      |      U50      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (1) 8K x 8   |     None      |  (1) 16K x 8  |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (1) 8K x 8   |     None      |  (1) 16K x 8  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (1) 8K x 8   |  (1) 8K x 8   |  (1) 16K x 8  |
          |------------------------------------------------------------|
          | Note: The locations of U48, U49 & U50 are unidentified.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |  Size  | JP12  | JP13  |  JP14  |  JP15  |  JP16  |  JP17  |
          |--------+-------+-------+--------+--------+--------+--------|
          |  None  | 2 & 3 | 2 & 3 |  Open  |  Open  |  Open  |  Open  |
          |--------+-------+-------+--------+--------+--------+--------|
          |  64KB  | 2 & 3 | 2 & 3 |  Open  |  Open  |  Open  |  Open  |
          |--------+-------+-------+--------+--------+--------+--------|
          | 128KB  | 1 & 2 | 1 & 2 | Closed |  Open  |  Open  | Closed |
          |--------+-------+-------+--------+--------+--------+--------|
          | 256KB  | 2 & 3 | 2 & 3 | Closed | Closed | Closed | Closed |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          |        Size        |      Bank 0       |      Bank 1       |
          |--------------------+-------------------+-------------------|
          |       512KB        |       512KB       |       None        |
          |--------------------+-------------------+-------------------|
          |        1MB         |       512KB       |       512KB       |
          |------------------------------------------------------------|
          | Note: The chips sizes are unidentified.                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |       Speed        |        JP5        |        JP6        |
          |--------------------+-------------------+-------------------|
          |       25MHz        |      Closed       |       Open        |
          |--------------------+-------------------+-------------------|
          |       33MHz        |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |       50iMHz       |      Closed       |       Open        |
          |--------------------+-------------------+-------------------|
          |       66iMHz       |       Open        |      Closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |   Type   |      JP1       |      JP2       |      JP3      |
          |----------+----------------+----------------+---------------|
          | 80486SX  |      Open      |   Pins 1 & 2   |     Open      |
          |          |                |     closed     |               |
          |----------+----------------+----------------+---------------|
          | 80487SX  |   Pins 2 & 3   |   Pins 1 & 2   |  Pins 1 & 2   |
          |          |     closed     |     closed     |    closed     |
          |----------+----------------+----------------+---------------|
          | 80486DX  |   Pins 1 & 2   |   Pins 2 & 3   |  Pins 1 & 2   |
          |          |     closed     |     closed     |    closed     |
          |----------+----------------+----------------+---------------|
          | 80486DX2 |   Pins 1 & 2   |   Pins 2 & 3   |  Pins 1 & 2   |
          |          |     closed     |     closed     |    closed     |
          |------------------------------------------------------------|
          | Note: If upgrade socket is filled, JP1 must be open.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                MISCELLANEOUS TECHNICAL NOTE                |
          |------------------------------------------------------------|
          | Note: The location of pin 1 on the jumpers and connectors  |
          | are unidentified.                                          |
          +------------------------------------------------------------+