Communications,                    Host-to-Coprocessor
 
 
- Programming:
- 
- Chose relatively simple, request-response API
- Multi-tasking not inherent in the API…host-based systems typically provide multi-threading
- Used COM and SCC manager, plus hardware, for data paths and accessibility (simplified naming service)
 
- Data movement:
- 
- Specialized hardware for data movement
- Fast bulk DES