(nw) protected is needed for derived classes

src/mame/drivers/dotrikun.cpp

@@ -51,7 +51,7 @@ public:
 
 	void dotrikun(machine_config &config);
 
-private:
+protected:
 
 	required_device<cpu_device> m_maincpu;
 	required_device<screen_device> m_screen;

src/mame/drivers/tempest.cpp

@@ -321,7 +321,7 @@ public:
 	DECLARE_CUSTOM_INPUT_MEMBER(tempest_buttons_r);
 	DECLARE_CUSTOM_INPUT_MEMBER(clock_r);
 
-private:
+protected:
 	DECLARE_WRITE8_MEMBER(wdclr_w);
 	DECLARE_WRITE8_MEMBER(tempest_led_w);
 	DECLARE_WRITE8_MEMBER(tempest_coin_w);

src/mame/includes/segaorun.h

@@ -66,7 +66,7 @@ public:
 
 	CUSTOM_INPUT_MEMBER( bankmotor_pos_r );
 
-private:
+protected:
 	// PPI read/write handlers
 	DECLARE_READ8_MEMBER( unknown_porta_r );
 	DECLARE_READ8_MEMBER( unknown_portb_r );

src/mame/includes/taito_f2.h

@@ -89,7 +89,7 @@ public:
 	void init_mjnquest();
 	void init_finalb();
 
-private:
+protected:
 	enum
 	{
 		TIMER_TAITOF2_INTERRUPT6

src/mame/includes/timelimt.h

@@ -18,7 +18,7 @@ public:
 
 	void timelimt(machine_config &config);
 
-private:
+protected:
 	required_device<cpu_device> m_maincpu;
 	required_device<cpu_device> m_audiocpu;
 	required_device<gfxdecode_device> m_gfxdecode;