SIEMENS NIXDORF INFORMATIONSSYSTEME AG
======================================

   S26361-D800

Processor  80486SX/80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive  
Processor  25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz 
Speed      
Chip Set   Unidentified                                                  
Max.       128MB                                                         
Onboard    
DRAM       
Cache      128/256KB                                                     
BIOS       Unidentified                                                  
Dimensions 330mm x 218mm                                                 
I/O        32-bit PCI slots (1), floppy drive interface, IDE interfaces  
Options    (2), parallel port, PS/2 mouse port, serial ports (2), VGA    
           feature connector, VGA port                                   
NPU        None                                                          
Options    

<gopher://bitreich.org/I/th99/m/S-T/32459-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | VGA port          |   CN1    | IDE interface 1  |   CN8    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   CN2    | IDE interface 2  |   CN9    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN3    | Imageport        |   CN10   |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN4    | VGA feature      |   CN11   |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | PS/2 mouse port   |   CN5    | Speaker          |   JP1    |
   |-------------------+----------+------------------+----------|
   | Optional power    |   CN6    | LED connector    |   JP2    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   CN7    | 32-bit PCI slot  |   SL1    |
   | interface         |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | L2 cache installed               |  J5D   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | L2 cache not installed           |  J5D   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache type select HIT            |  J5E   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache type select L2WB           |  J5E   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache type select write through  |  J5F   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache type select write back     |  J5F   | pins 2 & 3 |
   |   | (Pentium Overdrive)              |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J6A   |   Closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Flash BIOS mode select normal    |  J6B   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Flash BIOS mode select recovery  |  J6B   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Floppy drive interface enabled   |  J6C   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Floppy drive interface disabled  |  J6C   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Flash BIOS write protect enabled |  J6D   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Flash BIOS write protect         |  J6D   |   Closed   |
   |   | disabled                         |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  J6E   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  J6E   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   J7   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   |  8MB  | (1) 1M x 36 |  (1) 1M x  |    NONE    |    NONE    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 16MB  | (1) 2M x 36 |  (1) 2M x  |    NONE    |    NONE    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 32MB  | (1) 4M x 36 |  (1) 4M x  |    NONE    |    NONE    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (1) 8M x 36 |  (1) 8M x  |    NONE    |    NONE    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 128MB | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
   |       |             |     36     |     36     |     36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |    TAG     |    MD1     |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (1) 8K x 8 | (1) 8K x 8 |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (1) 32K x  | (1) 32K x  |
   |       |             |     8      |     8      |     8      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Size       |        J5B         |        J5C         |
   |------------------+--------------------+--------------------|
   |      128KB       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      256KB       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |             Type             |             J3              |
   |------------------------------+-----------------------------|
   |           80486SX            |      pins 1 & 2 closed      |
   |------------------------------+-----------------------------|
   |           80486SX2           |      pins 1 & 2 closed      |
   |------------------------------+-----------------------------|
   |           80486DX            |      pins 2 & 3 closed      |
   |------------------------------+-----------------------------|
   |           80486DX2           |      pins 2 & 3 closed      |
   |------------------------------+-----------------------------|
   |           80486DX4           |      pins 2 & 3 closed      |
   |------------------------------+-----------------------------|
   |      Pentium Overdrive       |      pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Type       |         J2          |        J5A        |
   |------------------+---------------------+-------------------|
   | Non SL enhanced  |  pins 2 & 3, 5 & 6  | pins 2 & 3 closed |
   |       CPU        |       closed        |                   |
   |------------------+---------------------+-------------------|
   | SL enhanced CPU  |  pins 1 & 2, 4 & 5  | pins 1 & 2 closed |
   |                  |       closed        |                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |             Speed             |            J6F             |
   |-------------------------------+----------------------------|
   |             25MHz             |            Open            |
   |-------------------------------+----------------------------|
   |             33MHz             |           Closed           |
   |-------------------------------+----------------------------|
   |            50iMHz             |            Open            |
   |-------------------------------+----------------------------|
   |            66iMHz             |           Closed           |
   |-------------------------------+----------------------------|
   |            75iMHz             |            Open            |
   |-------------------------------+----------------------------|
   |            100iMHz            |           Closed           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CPU VOLTAGE CONFIGURATION                  |
   |------------------------------------------------------------|
   |          Voltage           |              J4               |
   |----------------------------+-------------------------------|
   |            3.3v            |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |             5v             |       pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DMA CHANNEL CONFIGURATION                  |
   |------------------------------------------------------------|
   |            DMA             |              J1               |
   |----------------------------+-------------------------------|
   |           DMA 1            |   pins 1 & 2, 4 & 5 closed    |
   |----------------------------+-------------------------------|
   |           DMA 3            |   pins 2 & 3, 5 & 6 closed    |
   +------------------------------------------------------------+