diff --git a/Machines/Commodore/Plus4/Keyboard.cpp b/Machines/Commodore/Plus4/Keyboard.cpp
index ca48ef1bb..871422a75 100644
--- a/Machines/Commodore/Plus4/Keyboard.cpp
+++ b/Machines/Commodore/Plus4/Keyboard.cpp
@@ -43,12 +43,16 @@ uint16_t KeyboardMapper::mapped_key_for_key(Inputs::Keyboard::Key key) const {
 		BIND(Semicolon, Semicolon);		BIND(Quote, Colon);
 		BIND(Equals, Equals);			BIND(ForwardSlash, Slash);
 
+		BIND(OpenSquareBracket, At);
+		BIND(CloseSquareBracket, Plus);
+		BIND(Backslash, Clear_Home);
+
+		BIND(F11, Clear_Home);
+		BIND(F12, Run_Stop);
+
 		// TODO:
-		//	At
 		//	GBP
 		//	Asterisk
-		// 	Clear_Home
-		//	Run_Stop
 	}
 #undef BIND
 	return MachineTypes::MappedKeyboardMachine::KeyNotMapped;
diff --git a/Machines/Commodore/Plus4/Keyboard.hpp b/Machines/Commodore/Plus4/Keyboard.hpp
index 1519976f4..850c1bdaa 100644
--- a/Machines/Commodore/Plus4/Keyboard.hpp
+++ b/Machines/Commodore/Plus4/Keyboard.hpp
@@ -63,6 +63,12 @@ enum Key: uint16_t {
 	Control		= key(7, 0x04),		k2			= key(7, 0x08),
 	Space		= key(7, 0x10),		Commodore	= key(7, 0x20),
 	Q			= key(7, 0x40),		Run_Stop	= key(7, 0x80),
+
+	// Bonus virtual keys:
+	F4			= 0xfe00,
+	F5			= 0xfe01,
+	F6			= 0xfe02,
+	F7			= 0xfe03,
 };
 
 struct KeyboardMapper: public MachineTypes::MappedKeyboardMachine::KeyboardMapper {