A multitasking data processing system for executing a plurality of processes is provided that includes a single peripheral device addressable through two ports. A peripheral device manager is provided that includes the capability of (1) allowing access to only a single process for accessing the peripheral...http://www.google.fr/patents/US5367680?utm_source=gb-gplus-shareBrevet US5367680 - Rendering context manager for display adapters supporting multiple domains
Rendering context manager for display adapters supporting multiple domains
