diff --git a/wasm-port/docs/compatibility-validation.md b/wasm-port/docs/compatibility-validation.md
index b8f38ca..22246d2 100644
--- a/wasm-port/docs/compatibility-validation.md
+++ b/wasm-port/docs/compatibility-validation.md
@@ -198,11 +198,12 @@ INI parser smoke harness and an initial interpreter-core canonical event smoke
 for `minimal_linear`, `arc_semantics`, `length_units`, `modal_incremental`,
 `plane_selection`, `coordinate_offsets`, `g53_machine_coordinates`,
 `feed_control_modes`, `position_params`, `probe_semantics`, `spindle_orient`,
-`comment_logging`, and `numbered_params`, plus the `g1_zero_feed`,
-`arc_radius_mismatch`, `arc_zero_radius`, and `g53_incremental` negative
-fixtures. The WASM interpreter file path additionally covers
-`file_open_reset`, `percent_file_finish`, and `oword_subroutine`. OPFS
-validation is limited to the JavaScript host-boundary adapter plus the INI
+`comment_logging`, `numbered_params`, and `namedparam_semantics`, plus the
+`g1_zero_feed`, `arc_radius_mismatch`, `arc_zero_radius`, and
+`g53_incremental` negative fixtures. The WASM interpreter file path
+additionally covers `file_open_reset`, `percent_file_finish`, and
+`oword_subroutine`. OPFS validation is limited to the JavaScript host-boundary
+adapter plus the INI
 browser smoke harness. Full browser coverage, full SDK coverage, and full
 machine-session validation remain future work.
 
diff --git a/wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_wasm.cpp b/wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_wasm.cpp
index 827f188..6b5dac8 100644
--- a/wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_wasm.cpp
+++ b/wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_wasm.cpp
@@ -131,8 +131,14 @@ void append_events_and_state(std::ostringstream &output, const Interp &interp)
 extern "C" {
 
 EMSCRIPTEN_KEEPALIVE
-char *lcinterp_run_program(const char *program_text)
+char *lcinterp_run_program_with_ini(const char *program_text, const char *ini_path)
 {
+    if (ini_path && ini_path[0] != '\0') {
+        setenv("INI_FILE_NAME", ini_path, 1);
+    } else {
+        unsetenv("INI_FILE_NAME");
+    }
+
     Interp interp;
     standalone::reset_canon_events();
     initialize_minimal_interp(interp);
@@ -160,9 +166,17 @@ char *lcinterp_run_program(const char *program_text)
     return copy_result(output.str());
 }
 
+EMSCRIPTEN_KEEPALIVE
+char *lcinterp_run_program(const char *program_text)
+{
+    return lcinterp_run_program_with_ini(program_text, nullptr);
+}
+
 EMSCRIPTEN_KEEPALIVE
 char *lcinterp_run_file(const char *path)
 {
+    unsetenv("INI_FILE_NAME");
+
     Interp interp;
     standalone::reset_canon_events();
     initialize_minimal_interp(interp);
diff --git a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
index c5e2763..7c56c92 100644
--- a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
+++ b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
@@ -27,6 +27,23 @@ function runProgram(mod, programText) {
   }
 }
 
+function runProgramWithIni(mod, programText, iniPath) {
+  const programPtr = allocCString(mod, programText);
+  const iniPathPtr = allocCString(mod, iniPath);
+  let resultPtr = 0;
+  try {
+    resultPtr = mod._lcinterp_run_program_with_ini(programPtr, iniPathPtr);
+    assert.notEqual(resultPtr, 0);
+    return mod.UTF8ToString(resultPtr);
+  } finally {
+    if (resultPtr) {
+      mod._lcinterp_free_string(resultPtr);
+    }
+    mod._free(programPtr);
+    mod._free(iniPathPtr);
+  }
+}
+
 function ensureDir(mod, path) {
   try {
     mod.FS.mkdir(path);
@@ -114,6 +131,27 @@ for (const fixtureName of fixtureNames) {
   verifyExpectedOutput(fixtureName, runProgram(interp, programText), expectedEvents);
 }
 
+ensureDir(interp, "/work");
+const namedParamIniPath = "/work/namedparams.ini";
+interp.FS.writeFile(
+  namedParamIniPath,
+  readFileSync(resolve(rootDir, "tests/fixtures/ini/namedparams.ini"), "utf8"),
+  { encoding: "utf8" },
+);
+const namedParamProgramText = readFileSync(
+  resolve(rootDir, "tests/fixtures/gcode/namedparam_semantics.ngc"),
+  "utf8",
+);
+const namedParamExpected = readFileSync(
+  resolve(rootDir, "tests/fixtures/canon/namedparam_semantics.events"),
+  "utf8",
+).trimEnd();
+verifyExpectedOutput(
+  "namedparam_semantics",
+  runProgramWithIni(interp, namedParamProgramText, namedParamIniPath),
+  namedParamExpected,
+);
+
 const errorFixtureNames = [
   "g1_zero_feed",
   "arc_radius_mismatch",
@@ -140,7 +178,6 @@ const fileFixtureNames = [
   "oword_subroutine",
 ];
 
-ensureDir(interp, "/work");
 for (const fixtureName of fileFixtureNames) {
   const programPath = `/work/${fixtureName}.ngc`;
   const programText = readFileSync(
diff --git a/wasm-port/tools/build_wasm_core.sh b/wasm-port/tools/build_wasm_core.sh
index 3198db0..b85ae33 100755
--- a/wasm-port/tools/build_wasm_core.sh
+++ b/wasm-port/tools/build_wasm_core.sh
@@ -95,5 +95,5 @@ link_wasm_module \
   -s STACK_SIZE=2MB \
   -s NO_EXIT_RUNTIME=1 \
   -s FORCE_FILESYSTEM=1 \
-  -s EXPORTED_FUNCTIONS='["_malloc","_free","_lcinterp_run_program","_lcinterp_run_file","_lcinterp_free_string"]' \
+  -s EXPORTED_FUNCTIONS='["_malloc","_free","_lcinterp_run_program","_lcinterp_run_program_with_ini","_lcinterp_run_file","_lcinterp_free_string"]' \
   -s EXPORTED_RUNTIME_METHODS='["FS","UTF8ToString","stringToUTF8","lengthBytesUTF8"]'