20. Dual-Ported Memory Manager# 20.1. Introduction 20.2. Background 20.3. Operations 20.3.1. Creating a Port 20.3.2. Obtaining Port IDs 20.3.3. Converting an Address 20.3.4. Deleting a DPMA Port 20.4. Directives 20.4.1. rtems_port_create() 20.4.2. rtems_port_ident() 20.4.3. rtems_port_delete() 20.4.4. rtems_port_external_to_internal() 20.4.5. rtems_port_internal_to_external()