Here’s a structured feature list for emu0s v.1.0, written as if for a product release, changelog, or documentation.

• init: allocate internal registers, set up IRQ hooks.
• step: consume cycles, update timers, emit audio samples to ring buffer.
• read/write: enforce side-effects and bounds, return defined values on unmapped reads.
• snapshot: pack registers + buffer contents; restore should produce identical behavior after restore.

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Release Title: emu0s v.1.0 (Stable)