The "microprogramming notes" web pages describe the low-level organization, or microarchitecture, of a simple CPU.

1. Simple one-bus CPU architecture
2. Register in / out connections
3. Microcode examples
4. ALU architecture (insides)
5. ALU interface (outsides)
6. Control circuitry
7. Simple two-bus CPU architecture
8. Simple three-bus CPU architecture (used in RISCs)

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[list of course notes topics available] [main course page]