diff --git a/emulators/winuae.yml b/emulators/winuae.yml
index 5bd1a1a5..1a3c4cfe 100644
--- a/emulators/winuae.yml
+++ b/emulators/winuae.yml
@@ -35,7 +35,16 @@ notes: |
   file name matches the configured one (rommgr.cpp:2428-2461). The Kickstart entries below are named after other
   profiles' names for the same dumps: the code opens none of those names.
   kickstart_ext_rom_file is opened as given, and a missing extended ROM
-  only raises a notice (memory.cpp:1833-1849).
+  only raises a notice (memory.cpp:1833-1849). The machine then starts on
+  the Kickstart alone with nothing mapped in place of the extended ROM, and
+  the AROS replacement is used only when the Kickstart itself is missing
+  (memory.cpp:3055-3063). The CD drivers and CD boot code are resident
+  modules of the extended ROMs: cdstrap, cd.device and cdfs.library in the
+  CD32 ROM, cdtv.device, cdfs.library and cdstrap in the CDTV ROM. The CD32
+  and CDTV Kickstarts carry none. The CD32 quickstart model and the base
+  CDTV model have no floppy drive (cfgfile.cpp:9375-9379, 9405-9406), and
+  both ask for the extended ROM (cfgfile.cpp:9390-9395, 9414-9423), so
+  without it no CD is read or booted.
 
   CDTV and A600/A1200 internal devices are enabled with :ENABLED, which needs
   no ROM file. Cloanto encrypted ROMs are decoded with rom.key, searched in the
@@ -126,7 +135,6 @@ files:
   - name: "amiga-ext-130-cdtv.rom"
     system: commodore-cdtv
     required: true
-    hle_fallback: true
     size: 262144
     crc32: "42baa124"
     sha1: "7ba40ffa17e500ed9fed041f3424bd81d9c907be"
diff --git a/tests/test_audit_regressions.py b/tests/test_audit_regressions.py
index b05b3418..9ebf16ab 100644
--- a/tests/test_audit_regressions.py
+++ b/tests/test_audit_regressions.py
@@ -6147,5 +6147,23 @@ class SkipPacksHelpSaysWhatRuns(unittest.TestCase):
         self.assertEqual(skipped, {"4", "4b", "4c", "6"})
 
 
+class AmigaCdDriversLiveInTheExtendedRom(unittest.TestCase):
+    """WinUAE starts without the CD32 or CDTV extended ROM, but cd.device,
+    cdtv.device, cdfs.library and cdstrap are resident modules of those ROMs
+    and the Kickstarts carry none. Its AROS replacement stands in only for a
+    missing Kickstart (memory.cpp:3055-3063), so the CDTV ROM has no
+    fallback to downgrade its absence."""
+
+    def test_both_extended_roms_are_required_without_fallback(self):
+        profile = yaml.safe_load(
+            (ROOT / "emulators" / "winuae.yml").read_text(encoding="utf-8")
+        )
+        entries = {f["name"]: f for f in profile["files"]}
+        for name in ("amiga-ext-310-cd32.rom", "amiga-ext-130-cdtv.rom"):
+            with self.subTest(name=name):
+                self.assertIs(entries[name]["required"], True)
+                self.assertNotIn("hle_fallback", entries[name])
+
+
 if __name__ == "__main__":
     unittest.main()