mcesdi(7)            INTERACTIVE UNIX System            mcesdi(7)



          NAME
               mcesdi - low-level controller module

          DESCRIPTION
               The mcesdi module provides low-level interface routines
               between the High Performance Disk Driver (see hpdd(7)) and
               the controllers using an IBM/ESDI interface in a Micro
               Channel-compatible machine.  The driver can be configured
               for disk support for one or two controller boards if the
               machine supports a multiple ESDI controller configuration.
               However, it can also be configured to run with other non-
               ESDI controller boards.  The low-level code determines if
               the controller is, in fact, present at the configured
               address (see disk(7) and tape(7))) and what devices are
               attached to it.

               For information on configuring a kernel to include the
               mcesdi module, refer to the ``INTERACTIVE UNIX Operating
               System Maintenance Procedures.''

             Board Configuration
               The reference diskette that accompanies the Micro Channel
               machine should be used for standard configurations of the
               machine.  If a machine is configured with an IBM/ESDI and an
               IBM/ST506 (see mcst(7)) interface controller, both controll-
               ers must share the same interrupt level.

          SEE ALSO
               disk(7), hpdd(7), mcst(7), tape(7).
               ``INTERACTIVE UNIX Operating System Maintenance Procedures''
               in the INTERACTIVE UNIX Operating System Guide .

          ADDED VALUE
               This entry, supplied by INTERACTIVE Systems Corporation, is
               an extension of UNIX System V.




















          Rev. 1.1                                                   Page 1