cpci(7)                          DG/UX R4.11                         cpci(7)


NAME
       cpci - Corollary PCI host bridge (Intel only)

SYNOPSIS
       cpci([bridge-num])

DESCRIPTION
       The cpci host bridge allows an AViiON system to access Peripheral
       Component Interconnect (PCI) devices.  The bridge links a host's
       system bus (a Corollary C-Bus II) to a PCI bus.

       To access a PCI device via the interface, you must specify the
       appropriate cpci bridge as the parent bus device within the name of a
       PCI device to be configured (e.g., npsc or dpen).  See the SEE ALSO
       section of the pci_bus(7) man page for a list of the supported child
       PCI devices; each man page name is the name of a PCI device driver.

       To configure cpci devices, you must add to the DG/UX system
       configuration file one or more device name entries that contain one
       of the forms described in the synopsis above.  The parameters in a
       device name have the following meanings:

       ·   The bridge-num parameter is a hexadecimal number in the range 0
           through 1 which distinguishes the various instances of the
           controller that are available.  The default value for bridge-num
           is 0.

EXAMPLES
       The following entry in a DG/UX configuration file configures the DEC
       PCI Ethernet controller on PCI device number 3 of the first Corollary
       PCI host bridge:

            dpen(cpci(0),3)


       The following entry in a DG/UX configuration file configures the SCSI
       disk on SCSI ID 2 of the Symbios PCI SCSI adapter which is on PCI
       device number 4 of the second Corollary PCI host bridge:

            sd(npsc(cpci(1),4),2)



       For more information about DG/UX device configuration, refer to
       "Writing a Device Driver" in Programming in the DG/UX Kernel
       Environment.

SEE ALSO
       pci_bus(7).


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