diff --git a/COMPLIANCE.md b/COMPLIANCE.md
index 48acf9e..4ee8df7 100644
--- a/COMPLIANCE.md
+++ b/COMPLIANCE.md
@@ -288,6 +288,7 @@ Legend:
 | S10F1 / S10F2    | E→H       | ✅     | terminal request (equipment originated) |
 | S10F3 / S10F4    | H→E       | ✅     | terminal display single |
 | S10F5 / S10F6    | H→E       | ✅     | terminal display multi |
+| S10F7            | H→E       | ✅     | terminal display broadcast (W=0, no reply) |
 | S12F1–F19        | H↔E       | ✅     | wafer maps — row, array, coord; setup, request, send, error |
 | S14F1 / S14F2    | H→E       | ✅     | E39 GetAttr |
 | S14F3 / S14F4    | H→E       | ✅     | E39 SetAttr |
@@ -384,7 +385,6 @@ compliance claim.
 | HSMS-GS (multi-session)               | Out of scope — modern HSMS-SS covers virtually all current GEM equipment. |
 | Equipment Processing States (concrete states) | E30 §6.3 says the specific states are tool-defined. We provide the engine (`ControlTransitionTable` + the YAML loader); equipment vendors load their concrete states (IDLE / SETUP / READY / EXECUTING / PAUSE / …) the same way `data/control_state.yaml` is loaded today. Spec-compliant either way. |
 | E42 Enhanced Process Programs (S7F23–F26) | A separate SEMI standard. E30 GEM Process Program Management only requires the unformatted set (S7F1/F3/F5/F17/F19), which we have. |
-| S10F7 Broadcast Terminal Display      | Rarely used; equipment vendors typically forgo it. Not required for the Terminal Services capability. |
 
 ---
 
diff --git a/data/messages.yaml b/data/messages.yaml
index 18d7596..d5bf5f3 100644
--- a/data/messages.yaml
+++ b/data/messages.yaml
@@ -1329,6 +1329,22 @@ messages:
     builder: s10f6_terminal_display_multi_ack
     body: {kind: scalar, item_type: BINARY_BYTE, enum: TerminalAck, param: ack}
 
+  # S10F7 — Terminal Display, Broadcast (host -> equipment, no reply).
+  # E5: a one-way push of a multi-line broadcast message to all terminals.
+  # Same TID + LINES shape as S10F5 but no ack expected (W=0).
+  - id: S10F7
+    stream: 10
+    function: 7
+    builder: s10f7_terminal_display_broadcast
+    parser: parse_s10f7
+    body:
+      kind: list
+      struct_name: TerminalDisplayBroadcast
+      fields:
+        - {name: tid, shape: {kind: scalar, item_type: BINARY_BYTE}}
+        - name: lines
+          shape: {kind: list_of, element: {kind: scalar, item_type: ASCII}}
+
   # =====================================================================
   # S12 — Wafer Maps (E5 §13).
   #
diff --git a/tests/test_messages.cpp b/tests/test_messages.cpp
index 4a277fe..cc3e866 100644
--- a/tests/test_messages.cpp
+++ b/tests/test_messages.cpp
@@ -218,6 +218,20 @@ TEST_CASE("S10F5 carries TID + line list; S10F6 ack round-trip") {
   CHECK(*ack_byte(s10f6_terminal_display_multi_ack(TerminalAck::Accepted)) == 0);
 }
 
+TEST_CASE("S10F7 broadcast: round-trip TID + lines, W=0") {
+  auto m = s10f7_terminal_display_broadcast(
+      5, {"ALERT: pressure", "EVAC NOW", "STATUS UNKNOWN"});
+  CHECK(m.stream == 10);
+  CHECK(m.function == 7);
+  CHECK_FALSE(m.reply_expected);  // E5: S10F7 is a one-way broadcast.
+  auto td = parse_s10f7(m);
+  REQUIRE(td.has_value());
+  CHECK(td->tid == 5);
+  REQUIRE(td->lines.size() == 3);
+  CHECK(td->lines[0] == "ALERT: pressure");
+  CHECK(td->lines[2] == "STATUS UNKNOWN");
+}
+
 // ---- Spool data ready (S6F25/F26) --------------------------------------
 
 TEST_CASE("S6F25 carries NUM-MSG; S6F26 ack round-trip") {