diff --git a/src/mess/drivers/tk80bs.c b/src/mess/drivers/tk80bs.c
index f4cec6950cb..3abcdafe316 100644
--- a/src/mess/drivers/tk80bs.c
+++ b/src/mess/drivers/tk80bs.c
@@ -47,10 +47,6 @@ public:
 	required_shared_ptr<UINT8> m_p_videoram;
 private:
 	UINT8 m_term_data;
-	UINT8 m_keyb_press;
-	UINT8 m_keyb_press_flag;
-	UINT8 m_shift_press_flag;
-	UINT8 m_ppi_portc;
 	required_device<cpu_device> m_maincpu;
 	required_device<i8255_device> m_ppi;
 };
diff --git a/src/mess/drivers/zexall.c b/src/mess/drivers/zexall.c
index 6cfc59ab97b..4a99e80b604 100644
--- a/src/mess/drivers/zexall.c
+++ b/src/mess/drivers/zexall.c
@@ -69,7 +69,6 @@ private:
 	required_device<cpu_device> m_maincpu;
 	required_device<generic_terminal_device> m_terminal;
 	required_shared_ptr<UINT8> m_main_ram;
-	UINT8 m_data[8]; // unused; to suppress the scalar initializer warning
 	UINT8 m_out_data; // byte written to 0xFFFF
 	UINT8 m_out_req; // byte written to 0xFFFE
 	UINT8 m_out_req_last; // old value at 0xFFFE before the most recent write
diff --git a/src/mess/machine/ti99/genboard.h b/src/mess/machine/ti99/genboard.h
index 48419c444c7..c707f8174df 100644
--- a/src/mess/machine/ti99/genboard.h
+++ b/src/mess/machine/ti99/genboard.h
@@ -178,10 +178,6 @@ private:
 	bool    m_cartridge7_writable;
 	int     m_map[8];
 
-	int     m_mapdecode;
-
-	int     m_offset;
-	int     m_physaddr;
 	void    decode(address_space& space, offs_t offset, bool setwait, bool read_mode, decdata* dec);
 	decdata m_decoded;