
SIEMENS NIXDORF INFORMATIONSSYSTEME AG

SYSTEM BOARD PCD-4LSX, SYSTEM BOARD PCD-H

Processor          80486SX/80487SX/80486DX/80486DX2
Processor Speed    25/33/40/50(internal)/66(internal)MHz
Chip Set           Unidentified
Video Chip Set     Unidentified
Maximum Onboard    32MB
Memory
Maximum Video      2MB
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), VGA feature
                   connector, VGA port, riser slot
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  VGA port                    CN1      Floppy drive interface      CN7

  Parallel port               CN2      Speaker                     J13

  Serial port 2               CN3      External battery            J14

  Serial port 1               CN4      VGA feature connector       J23

  PS/2 mouse port             CN5      Front panel connector      JP30

  IDE interface               CN6      Riser slot                  SL1

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Onboard battery enabled                 JP8           Pins 1 & 2
                                                              closed

      Onboard battery disabled                JP8           Pins 2 & 3
                                                              closed

     Monitor type select color               JP10            Closed

      Monitor type select monochrome          JP10             Open

     Mouse IRQ12 enabled                     JP11            Closed

      Mouse IRQ12 disabled                    JP11             Open

     On board video enabled                  JP25            Closed

      On board video disabled                 JP25             Open

           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

     20MB       (4) 4M x 9   (4) 1M x 9

     32MB       (4) 4M x 9   (4) 4M x 9

                            CACHE CONFIGURATION

    Size       Bank 0     Bank 1     TAG (U48)    TAG (U49)    TAG (U50)

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

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

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

  Note: The location of banks 0 & 1 and the TAG 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

         1MB                 1MB                  None

         2MB                 1MB                  1MB

  Note: The size of the video memory chips 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 (PQFP)        Pins 1 & 2        Pins 2 & 3          Closed
                         closed             closed

   80486SX (PGA)          Open            Pins 1 & 2           Open
                                            closed

   80486DX (PGA)        Pins 1 & 2        Pins 2 & 3          Closed
                         closed             closed

  80486DX2 (PGA)        Pins 1 & 2        Pins 2 & 3          Closed
                         closed             closed

