status.i4.v = daq_retrieve_device_access_c(device_index.i4.v,
						   node.i4.v, num_tasks.i4.r,

	This routine will retrieve tasks referencing a given
	device and property index (single node or all nodes).

	device_index	requested device index
	property	requested device property
	node		node to search (Use a value of ALL_NODES if you
			want to retrieve all device accesses.)
	num_tasks	returned number of matching tasks found
	tasks		returned matching task information
			(array of structures of type DPM_TASK_INFO_DATA)
			(Note: The memory for these structures is allocated
			 by this routine and should not be freed by the caller.)

	This function returns ACNET status values as follows:

	OK			success
	CLIB_BUGCHK		request/reply mismatch
	ACNET_UTIME		reply timed out
	otherwise		error retrieving task information

       This function requires the following include files:

	cbslib_h, acnet_h, acnet_errors_h

	Related functions:

	dpm_show_device_access, daq_retrieve_fe_activity_c,
	dpm_show_fe_activity, daq_retrieve_connected_tasks_c,

	C/C++ usage:

	short	property = PRREAD;
	int	status;
	int	device_index;
	int	node = ALL_NODES;
	int	num_tasks;

	status = daq_retrieve_device_access_c(device_index,property,node,