Author: EMU Systems Architecture Group Release Date: April 13, 2026 Version: 2.0 (Stable) Abstract EMU OS v2.0 introduces a fundamental shift from traditional monolithic embedded operating systems toward an event-driven, microkernel architecture designed specifically for heterogeneous emulation environments and real-time sensor integration. Building on the legacy of v1.x’s low-footprint virtualization layer, version 2.0 implements a zero-copy inter-process communication (IPC) fabric, adaptive tickless scheduling, and a unified driver model for x86, ARM, and RISC-V backends. Performance benchmarks show a 40% reduction in context-switch latency and 60% lower memory overhead compared to v1.9, while enabling deterministic response within 15 µs for time-critical sensor fusion tasks. This paper details the architectural redesign, new emulation consistency model, and validation across robotics, retro-computing, and edge-AI use cases. 1. Introduction The original EMU OS (v1.0–1.9) focused on cycle-accurate emulation of legacy processors within a minimal host environment. However, emerging applications—autonomous swarms, hybrid FPGA/CPU sensor processing, and real-time digital twins—demanded both temporal determinism and architectural heterogeneity.
(Incompatible changes: driver IRQ model, event timestamp field, and scheduler policy flags) emu os v2.0