diff --git a/src/mess/includes/genpc.h b/src/mess/includes/genpc.h
index e40331deec3..921aa0b73f7 100644
--- a/src/mess/includes/genpc.h
+++ b/src/mess/includes/genpc.h
@@ -39,8 +39,8 @@ protected:
 	virtual void device_start();
 	virtual void device_reset();
 
-	void install_device(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name); // legacy
-	void install_device_write(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, write8_device_func whandler, const char *whandler_name); // legacy
+	ATTR_DEPRECATED void install_device(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name);
+	ATTR_DEPRECATED void install_device_write(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, write8_device_func whandler, const char *whandler_name);
 	void install_device(offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_delegate rhandler, write8_delegate whandler);
 public:
 	required_device<cpu_device>  m_maincpu;
diff --git a/src/mess/machine/isa.h b/src/mess/machine/isa.h
index 74bfe69301f..99898bafa1e 100644
--- a/src/mess/machine/isa.h
+++ b/src/mess/machine/isa.h
@@ -148,9 +148,9 @@ public:
 	static void static_set_cputag(device_t &device, const char *tag);
 	template<class _iochck> void set_iochck_callback(_iochck iochck) { m_write_iochck.set_callback(iochck); }
 
-	void install_device(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name); // legacy
+	ATTR_DEPRECATED void install_device(device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name);
 	void install_device(offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_delegate rhandler, write8_delegate whandler);
-	void install_device(offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_space_func rhandler, const char* rhandler_name, write8_space_func whandler, const char *whandler_name); // legacy
+	ATTR_DEPRECATED void install_device(offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_space_func rhandler, const char* rhandler_name, write8_space_func whandler, const char *whandler_name);
 	template<typename T> void install_device(offs_t addrstart, offs_t addrend, T &device, void (T::*map)(address_map &map, device_t &device), int bits = 8, UINT64 unitmask = U64(0xffffffffffffffff)) {
 		m_maincpu->space(AS_IO).install_device(addrstart, addrend, device, map, bits, unitmask);
 	}
@@ -182,8 +182,8 @@ public:
 
 	virtual void set_dma_channel(UINT8 channel, device_isa8_card_interface *dev, bool do_eop);
 protected:
-	void install_space(address_spacenum spacenum, device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name); // legacy
-	void install_space(address_spacenum spacenum, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_space_func rhandler, const char* rhandler_name, write8_space_func whandler, const char *whandler_name); // legacy
+	ATTR_DEPRECATED void install_space(address_spacenum spacenum, device_t *dev, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_device_func rhandler, const char* rhandler_name, write8_device_func whandler, const char *whandler_name);
+	ATTR_DEPRECATED void install_space(address_spacenum spacenum, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_space_func rhandler, const char* rhandler_name, write8_space_func whandler, const char *whandler_name);
 	void install_space(address_spacenum spacenum, offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_delegate rhandler, write8_delegate whandler);
 
 	// device-level overrides