serial improvements

h8536/render.py

@@ -30,6 +30,7 @@ from .serial_reconstruction import (
     serial_reconstruction_json_payload,
     serial_reconstruction_metadata_for_instruction,
 )
+from .serial_semantics import analyze_serial_semantics
 from .symbols import symbol_for_address
 from .tables import IO_REGISTERS
 from .timing import format_timing_summary
@@ -474,6 +475,7 @@ def write_json(
             for ins in (instructions[addr] for addr in sorted(instructions))
         ],
     }
+    payload["serial_semantics"] = analyze_serial_semantics(payload)
     path.write_text(json.dumps(payload, indent=2), encoding="utf-8")