cird(7)                          DG/UX 5.4.2                         cird(7)


NAME
       cird - AViiON family disk subsystem

DESCRIPTION
       The cird disk subsystem family consists of the set of VME-based disk
       controllers which support the following units:

       Model #    Size
       ESDI 6442  327 Mbyte full-height non-removable disk
       ESDI 6661  330 Mbyte half-height non-removable disk
       ESDI 6555  648 Mbyte full-height non-removable disk
       SMD  6541  1066 Mbyte non-removable disk
       SMD  6542  1066 Mbyte non-removable disks (package of two)

       A physical disk unit may be accessed directly via the special file
       nodes in /dev/pdsk and /dev/rpdsk.  These nodes are named in the
       form:

       /dev/[r]pdsk/cird@device-code(addr,m)

       where device-code is the hexadecimal device code of the controller,
       addr is the control space starting address for the controller, and m
       is the unit on the controller.

       The cird subsystem has 4 built-in defaults for the device code and
       control space starting address of the cird device specification.
       When using the defaults, a short form of the cird device
       specification can be used:

           cird(controller number)

       where controller number is the hexadecimal number of the controller
       in the system.  For example, the first cird controller is cird(0),
       the second is cird(1), etc.

           Controller #    Device Code/VME Address

           cird(0)         0x18/0xFFFFEF00
           cird(1)         0x19/0xFFFFF100
           cird(2)         0x1A/0xFFFFFB00
           cird(3)         0x1B/0xFFFFFD00

       The nodes in /dev/pdsk provide access as a block special device as
       described in dsk(7).  The nodes in /dev/rpdsk provide access as a
       character special device as described in rdsk(7).  When accessing a
       disk through a /dev/pdsk or /dev/rpdsk node, the operating system
       performs no bad block remapping.

FILES
       /dev/pdsk/*

       /dev/rpdsk/*





Licensed material--property of copyright holder(s)                         1

cird(7)                          DG/UX 5.4.2                         cird(7)


SEE ALSO
       cied(7), cimd(7), dsk(7), rdsk(7).























































Licensed material--property of copyright holder(s)                         2