Abstract
DLFP (Dual-Layer Fetch Pathway) is a novel deterministic instruction fetch architecture tailored for safety-critical systems requiring strict execution timing and resilience. It introduces the Instruction Heatmap Engine (IHE), a lightweight classification mechanism that segments instructions into Hot, Warm, and Cold zones based on execution behavior. By combining this classification with layered fetch queues (L0–L3), DLFP enables deterministic scheduling, thermal-aware promotion, and reduced fetch latency variability. This approach strengthens system predictability, mitigates speculative execution vulnerabilities such as Spectre and Meltdown, and enhances safety in real-time environments including SCADA, avionics, medical electronics, and autonomous robotics. DLFP offers a foundational architecture for future deterministic processors where assurance, consistency, and safety are paramount.
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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Recommended Citation
sayeh, mostefa Mr, "DLFP: A Deterministic Instruction Fetch Architecture for Safety-Critical Electronics", Technical Disclosure Commons, (June 08, 2025)
https://www.tdcommons.org/dpubs_series/8206