SIEMENS NIXDORF INFORMATIONSSYTEME AG

U15002-C390

Processor           80486SX/80487SX/80486DX/80486DX2
Processor Speed     25/33/50(internal)/66(internal)MHz
Chip Set            Unidentified
Video Chip Set      None
Maximum Onboard     32MB
Memory
Maximum Video       None
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), feature connector,
                    VGA port, riser slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  PS/2 mouse port             CN1      Floppy drive interface      CN7

  Serial port 1               CN2      IDE interface               CN8

  Serial port 2               CN3      Speaker                     CN9

  Parallel port               CN4      Front panel connector      CN10

  VGA port                    CN5      Riser slot                  SL1

  Feature connector           CN6

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Battery type select internal            JP8           Pins 1 & 2
                                                              closed

      Battery type select external            JP8           Pins 2 & 3
                                                              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       U48         U49         U50

    64KB        (4) 8K x    (4) 8K x    (1) 8K x     None       (1) 16K x
                   8           8           8                       4

    128KB      (4) 32K x      None      (1) 8K x     None       (1) 16K x
                   8                       8                       4

    256KB      (4) 32K x    (4) 32K x   (1) 8K x    (1) 8K x    (1) 16K x
                   8           8           8           8           4

  Note: The location of banks 0 & 1 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.

     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

          MISCELLANEOUS TECHNICAL NOTE

  Note: The location of pin 1 is unidentified.