User`s guide

62 DC 900-1516D
ICP2432 User’s Guide for OpenVMS Alpha (DLITE Interface)
4.2.2 SYS$CANCEL
To cancel all active or pending read or write requests associated with an I/O channel, the
application issues the VMS
SYS$CANCEL call. See the VMS system services manual for
a detailed description.
Synopsis
SYS$CANCEL ( channel )
Parameters
channel Communication channel
4.2.3 SYS$DASSGN
To terminate its association with an ICP device, the application issues the VMS
SYS$DASSGN call for the channel associated with the ICP. See the VMS system services
manual for a detailed description of
SYS$DASSGN.
Synopsis
SYS$DASSGN ( channel )
Parameters
channel Communication channel