nmea0183-knowledge-patch

# NMEA 0183 Knowledge Patch > Baseline: NMEA 0183 through 4.11, including common sentences and checksums; covered range: additional implementation details and changes through 4.30. Use this patch when implementing, reviewing, configuring, or diagnosing NMEA 0183 links, emitters, parsers, and navigation integrations. Start with the quick references below, then read the topic file that matches the task. ## Reference index | Reference | Topics | | --- | --- | | [protocol-and-wiring.md](references/protocol-and-wiring.md) | EIA-422-A wiring, legacy single-ended links, topology, baud rates, framing, checksums, gateways | | [sentences-and-navigation.md](references/sentences-and-navigation.md) | Address forms, APB, RTE, XDR, signed values, BOD, R00, STN, RMB, NMEA 2.3 modes | | [gnss-and-receiver-output.md](references/gnss-and-receiver-output.md) | NMEA 0183 4.30 GNSS additions, Emlid, Fixposition, NovAtel, Trimble Alloy | | [garmin-and-sirf.md](references/garmin-and-sirf.md) | Garmin PGRM/PSLIB control and telemetry, SiRF PSRF configuration and reset behavior | | [inertial-and-motion.md](references/inertial-and-motion.md) | Advanced Navigation output and SBG fused, inertial, attitude, motion, status, and compatibility sentences | | [parsers-and-tools.md](references/parsers-and-tools.md) | Rust `nmea0183` 0.6.0, Hazer C semantics, `gpstool`, filtering, recovery, builds | | [opencpn-integration.md](references/opencpn-integration.md) | OpenCPN core and Dashboard input, heading sele...