SIEMENS NIXDORF

SYSTEM BOARD D992 (DUAL)

Device Type                Mainboard
Processor                  Pentium II
Processor Speed            266/300/333MHz
Chip Set                   Intel 440FX
Video Chip Set             Cirrus Logic
Maximum Onboard Memory     512MB
Maximum Video Memory       2MB
Cache                      256/512KB (located on Pentium II CPU)
BIOS                       Unidentified
Dimensions                 305mm x 244mm
I/O Options                32-bit PCI slots (6), floppy drive interface,
                           IDE interface, Wide Ultra SCSI interface,
                           parallel port, PS/2 mouse port, serial ports
                           (2), VGA port, VRM connectors (2), wake on modem
                           connector

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  ATX power connector         ATX       Front panel               C12
                                        connector

  SMM connector               C1        PS/2 mouse port           CN1

  Chassis fan power           C2        Serial port 2             CN2

  Chassis fan power           C3        Serial port 1             CN3

  Speaker                     C4        Parallel port             CN4

  Control panel               C5        VGA port                  CN5
  connector

  Temperature sensor 1        C6        Floppy drive              CN6
                                        interface

  SCSI interface LED          C7        Ultra Wide SCSI           CN7
                                        interface

  Temperature sensor 2        C8        IDE interface             CN8

  Wake on modem               C9        32-bit PCI slots       PC1 – PC6
  connector

  Can bus control             C10       VRM connector             VRM1
  connector 1

  Can bus control             C11       VRM connector             VRM2
  connector 2

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Flash BIOS normal operation            SW1/1             Off

      Flash BIOS recovery mode               SW1/1              On

  »   Factory configured - do not alter      SW1/2             Off

  »   Flash BIOS write protect disabled      SW1/3             Off

      Flash BIOS write protect enabled       SW1/3              On

  »   Floppy drive write protect             SW1/4             Off
      disabled

      Floppy drive write protect             SW1/4              On
      enabled

                            DIMM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     64MB        (1) 2M x 64   (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     64MB        (1) 8M x 64       None           None           None

     64MB        (1) 4M x 64   (1) 4M x 64        None           None

     72MB        (1) 8M x 64   (1) 1M x 64        None           None

     80MB        (1) 8M x 64   (1) 2M x 64        None           None

     96MB        (1) 8M x 64   (1) 4M x 64        None           None

     96MB        (1) 4M x 64   (1) 4M x 64    (1) 4M x 64        None

     128MB       (1) 16M x 64      None           None           None

     128MB       (1) 8M x 64   (1) 8M x 64        None           None

     128MB       (1) 4M x 64   (1) 4M x 64    (1) 4M x 64    (1) 4M x 64

                        DIMM CONFIGURATION (CON’T)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     136MB       (1) 16M x 64  (1) 1M x 64        None           None

     144MB       (1) 16M x 64  (1) 2M x 64        None           None

     152MB       (1) 16M x 64  (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     160MB       (1) 16M x 64  (1) 4M x 64        None           None

     176MB       (1) 16M x 64  (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     192MB       (1) 16M x 64  (1) 8M x 64        None           None

     192MB       (1) 8M x 64   (1) 8M x 64    (1) 8M x 64        None

     224MB       (1) 16M x 64  (1) 4M x 64    (1) 4M x 64    (1) 4M x 64

     256MB       (1) 16M x 64  (1) 16M x 64       None           None

     256MB       (1) 8M x 64   (1) 8M x 64    (1) 8M x 64    (1) 8M x 64

     272MB       (1) 16M x 64  (1) 16M x 64   (1) 1M x 64    (1) 1M x 64

     288MB       (1) 16M x 64  (1) 16M x 64   (1) 2M x 64    (1) 2M x 64

     320MB       (1) 16M x 64  (1) 16M x 64   (1) 4M x 64    (1) 4M x 64

     320MB       (1) 16M x 64  (1) 8M x 64    (1) 8M x 64    (1) 8M x 64

     384MB       (1) 16M x 64  (1) 16M x 64   (1) 16M x 64       None

     448MB       (1) 32M x 64  (1) 8M x 64    (1) 8M x 64    (1) 8M x 64

     512MB       (1) 16M x 64  (1) 16M x 64   (1) 16M x 64   (1) 16M x 64

                     CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU.

            VIDEO MEMORY CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (2) 256K x 16         None

       2MB        (2) 256K x 16    (2) 256K x 16

                            CPU SPEED SELECTION

    CPU       Clock    Multiplier     SW1/5    SW1/6     SW1/7     SW1/8
   speed     speed

  266MHz     66MHz         4x          On        On       On        Off

  300MHz     66MHz        4.5x         On       Off       On        Off

  333MHz     66MHz         5x          On        On       Off       Off