User`s guide

4: Application Interface
DC 900-1516D 61
have the ability to revert to an earlier node number scheme used by Simpact’s ICP3222
and Digital’s Commserver products. This scheme connects a single node number to
each ICP port. Whatever node number scheme or protocol you use, it is transparent to
the VMS device driver. More information about protocol specifics can be found in
Chapter 5.
4.2 Supported VMS System Services
The ICP2432 device driver supports the VMS system services described in the following
sections.
4.2.1 SYS$ASSIGN
Before issuing VMS QIO calls, the application must first assign a channel to an ICP with
the VMS
SYS$ASSIGN call. This call sets up an association between this channel and
the ICP on subsequent QIO calls. See the VMS system services manual for a detailed
description of
SYS$ASSIGN.
Synopsis
SYS$ASSIGN ( device_name, &channel [,acmode] [,mbxnam] )
Parameters
device_name ICP device name (for example, ZJA0)
channel Address of the communication channel that is assigned
Note
The ICP2432 device driver does not support access mode (acmode)
and mailbox (mbxnam).