Denelcor HEP
Designed and built by Burton Smith
Allowed multiple instructions to “be in the air” at one time
- Fetch next instruction, update PC
- Suspend, check to see if others need attention
- Decode instruction, computing EA of mem ref(s), issue mem ref(s)
- Suspend, check to see if others need attention
- Evaluate instruction
Great for multithreading, or for good ILP