diff --git a/README.md b/README.md
index 68476fc..a7d0009 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,33 @@ make
 cp -L libADLMIDI.so ../../ADLMidi.NET/runtimes/linux-x64/native
 ```
 
+## macOS (Apple Silicon):
+Requires Xcode command-line tools and CMake. Tested on macOS 14 (arm64); the same flags should also produce an x86_64 dylib if `-DCMAKE_OSX_ARCHITECTURES=x86_64` is passed (untested here). cmake produces a versioned dylib (`libADLMIDI.1.6.2.dylib`) plus two install-name symlinks; copy the unversioned `libADLMIDI.dylib` and rename to `libadlmidi.dylib` to match the cross-platform lowercase name the wrapper P/Invokes.
+
+```
+mkdir build
+cd build
+cmake -DCMAKE_BUILD_TYPE=Release       \
+      -DCMAKE_OSX_ARCHITECTURES=arm64  \
+      -DlibADLMIDI_STATIC=OFF          \
+      -DlibADLMIDI_SHARED=ON           \
+      -DWITH_EMBEDDED_BANKS=OFF        \
+      -DWITH_XMI_SUPPORT=ON            \
+      -DUSE_DOSBOX_EMULATOR=OFF        \
+      -DUSE_NUKED_EMULATOR=ON          \
+      -DUSE_OPAL_EMULATOR=OFF          \
+      -DUSE_JAVA_EMULATOR=OFF          \
+      -DUSE_ESFMU_EMULATOR=OFF         \
+      -DUSE_MAME_EMULATOR=OFF          \
+      -DUSE_YMFM_EMULATOR=OFF          \
+      ..
+make
+[ -d ../../ADLMidi.NET/runtimes/osx-arm64/native ] || mkdir -p ../../ADLMidi.NET/runtimes/osx-arm64/native
+cp -L libADLMIDI.dylib ../../ADLMidi.NET/runtimes/osx-arm64/native/libadlmidi.dylib
+```
+
+The linker produces an adhoc code signature automatically on Apple Silicon (no manual `codesign` step needed). Verify with `codesign -dv libadlmidi.dylib` (expect `Signature=adhoc`).
+
 ## Windows:
 * Run CMake setup program
 * Pick libADLMIDI directory
diff --git a/src/ADLMidi.NET.Tests/DllImportFixture.cs b/src/ADLMidi.NET.Tests/DllImportFixture.cs
index 59e2feb..b7311a1 100644
--- a/src/ADLMidi.NET.Tests/DllImportFixture.cs
+++ b/src/ADLMidi.NET.Tests/DllImportFixture.cs
@@ -28,6 +28,12 @@ public DllImportFixture()
                         ? name
                         : name + ".so";
                 }
+                else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+                {
+                    filename = string.Equals(Path.GetExtension(name), ".DYLIB", StringComparison.OrdinalIgnoreCase)
+                        ? name
+                        : name + ".dylib";
+                }
                 else throw new PlatformNotSupportedException();
 
                 var fullPath = Path.Combine(root, "runtimes", runtime, "native", filename);
diff --git a/src/ADLMidi.NET/MidiPlayer.cs b/src/ADLMidi.NET/MidiPlayer.cs
index 7b55cf7..f676510 100644
--- a/src/ADLMidi.NET/MidiPlayer.cs
+++ b/src/ADLMidi.NET/MidiPlayer.cs
@@ -408,7 +408,7 @@ public unsafe int Generate(Span<short> buffer)
     /// <param name="userData">The user data to pass to the callback.</param>
     public void SetNoteHook(NoteHook noteHook, IntPtr userData) => AdlMidiImports.adl_setNoteHook(_device, noteHook, userData);
 
-#if false
+    // Real-time API — send MIDI events directly to the synth for live playback.
     public void RealTimeResetState() => AdlMidiImports.adl_rt_resetState(_device);
     public int RealTimeNoteOn(byte channel, byte note, byte velocity) => AdlMidiImports.adl_rt_noteOn(_device, channel, note, velocity);
     public void RealTimeNoteOff(byte channel, byte note) => AdlMidiImports.adl_rt_noteOff(_device, channel, note);
@@ -421,8 +421,7 @@ public unsafe int Generate(Span<short> buffer)
     public void RealTimeBankChangeLSB(byte channel, byte lsb) => AdlMidiImports.adl_rt_bankChangeLSB(_device, channel, lsb);
     public void RealTimeBankChangeMSB(byte channel, byte msb) => AdlMidiImports.adl_rt_bankChangeMSB(_device, channel, msb);
     public void RealTimeBankChange(byte channel, short bank) => AdlMidiImports.adl_rt_bankChange(_device, channel, bank);
-    public int RealTimeSystemExclusive(IntPtr message, UIntPtr size) => AdlMidiImports.adl_rt_systemExclusive(_device, message, size);
-#endif
+    public unsafe int RealTimeSystemExclusive(IntPtr message, UIntPtr size) => AdlMidiImports.adl_rt_systemExclusive(_device, (byte*)message, size);
 
 #if false
     public void SetRawEventHook(AdlMidiImports.RawEventHook rawEventHook, IntPtr userData) => AdlMidiImports.adl_setRawEventHook(_device, rawEventHook, userData);
diff --git a/src/ADLMidi.NET/runtimes/osx-arm64/native/libadlmidi.dylib b/src/ADLMidi.NET/runtimes/osx-arm64/native/libadlmidi.dylib
new file mode 100755
index 0000000..7172074
Binary files /dev/null and b/src/ADLMidi.NET/runtimes/osx-arm64/native/libadlmidi.dylib differ
diff --git a/src/TestApp/Program.cs b/src/TestApp/Program.cs
index 64af4ea..63370bd 100644
--- a/src/TestApp/Program.cs
+++ b/src/TestApp/Program.cs
@@ -242,6 +242,12 @@ static void SetupDllLoader()
                     ? name
                     : name + ".so";
             }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            {
+                filename = string.Equals(Path.GetExtension(name), ".DYLIB", StringComparison.OrdinalIgnoreCase)
+                    ? name
+                    : name + ".dylib";
+            }
             else throw new PlatformNotSupportedException();
 
             var fullPath = Path.Combine(root, "runtimes", runtime, "native", filename);