excellent/lastbank.cpp: bump main CPU to /2 clock

src/devices/machine/tc009xlvc.cpp

@@ -102,7 +102,7 @@ void tc0090lvc_device::cpu_map(address_map &map)
 void tc0090lvc_device::vram_map(address_map &map)
 {
 	map(0x010000, 0x01ffff).readonly().share("vram");
-	// note, the way tiles are addressed suggests that 0x0000-0x3fff of this might be usable,
+	// NOTE: the way tiles are addressed suggests that 0x0000-0x3fff of this might be usable,
 	//       but we don't map it anywhere, so the first tiles are always blank at the moment.
 	map(0x014000, 0x01ffff).lw8(NAME([this] (offs_t offset, u8 data) { vram_w(offset + 0x4000, data); }));
 	map(0x040000, 0x05ffff).ram().share("bitmap_ram");

src/mame/excellent/dblcrown.cpp

@@ -285,7 +285,7 @@ uint8_t dblcrown_state::key_pending_r()
  */
 void dblcrown_state::output_w(uint8_t data)
 {
-	machine().bookkeeping().coin_counter_w(0, BIT(data, 4));  /* Coin In counter pulse */
+	machine().bookkeeping().coin_counter_w(0, BIT(data, 4));
 	m_hopper->motor_w(BIT(data, 3));
 	machine().bookkeeping().coin_lockout_global_w(!BIT(data, 2));
 }
@@ -495,7 +495,7 @@ static INPUT_PORTS_START( dblcrown )
 	PORT_DIPSETTING(    0x20, "1 Coin/50 Credits" )
 	PORT_DIPSETTING(    0x10, "1 Coin/100 Credits" )
 	PORT_DIPSETTING(    0x00, "1 Coin/500 Credits" )
-    // TODO: game will error blink if On at payout time
+	// TODO: game will error blink if On at payout time
 	PORT_DIPNAME( 0x80, 0x80, "Hopper Status?" )
 	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

src/mame/excellent/lastbank.cpp

@@ -13,8 +13,8 @@ Undumped games on similar hardware (ES-9402 or ES-9410):
 * Miracle Seven - Heaven's Gate Turbo
 * Ukiyo Box
 
-
 TODO:
+- lastbank: sprites should be clip masked during gameplay (verify);
 - fever13: GFX ROM dump;
 - fever13: OKI sound volume overdrives a lot;
 - hookup hopper device;
@@ -78,7 +78,7 @@ private:
 	template <uint8_t Player> uint8_t key_matrix_r();
 	void key_select_w(uint8_t data);
 
-	TIMER_DEVICE_CALLBACK_MEMBER(irq_scanline);
+	TIMER_DEVICE_CALLBACK_MEMBER(scanline_cb);
 	void audio_map(address_map &map);
 	void tc0091lvc_map(address_map &map);
 };
@@ -562,10 +562,9 @@ static INPUT_PORTS_START( fever13 )
 	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPLOCATION("DSW4:8")
 	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-
 INPUT_PORTS_END
 
-TIMER_DEVICE_CALLBACK_MEMBER(lastbank_state::irq_scanline)
+TIMER_DEVICE_CALLBACK_MEMBER(lastbank_state::scanline_cb)
 {
 	int const scanline = param;
 
@@ -582,19 +581,20 @@ TIMER_DEVICE_CALLBACK_MEMBER(lastbank_state::irq_scanline)
 
 void lastbank_state::lastbank(machine_config &config)
 {
-	// basic machine hardware
-	TC0091LVC(config, m_maincpu, 14.318181_MHz_XTAL / 4);
+	constexpr XTAL MASTER_CLOCK = 14.318181_MHz_XTAL;
+
+	// NOTE: too slow with /4, cfr. animation of official ringing the bell during gameplay
+	TC0091LVC(config, m_maincpu, MASTER_CLOCK / 2);
 	m_maincpu->set_addrmap(AS_PROGRAM, &lastbank_state::main_map);
 	m_maincpu->set_tilemap_xoffs(0,192); // TODO: correct?
 
-	TIMER(config, "scantimer").configure_scanline(FUNC(lastbank_state::irq_scanline), "screen", 0, 1);
+	TIMER(config, "scantimer").configure_scanline(FUNC(lastbank_state::scanline_cb), "screen", 0, 1);
 
 	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
 
-	z80_device &audiocpu(Z80(config, "audiocpu", 14.318181_MHz_XTAL / 4));
+	z80_device &audiocpu(Z80(config, "audiocpu", MASTER_CLOCK / 4));
 	audiocpu.set_addrmap(AS_PROGRAM, &lastbank_state::audio_map);
 	audiocpu.set_addrmap(AS_IO, &lastbank_state::audio_io);
-	// yes, we have no interrupts
 
 	config.set_perfect_quantum(m_maincpu);
 

src/mame/misc/dfruit.cpp

@@ -1,24 +1,20 @@
 // license:BSD-3-Clause
 // copyright-holders: Angelo Salese
+/**************************************************************************************************
 
-/***************************************************************************
+Fruit Dream (c) 1993 Nippon Data Kiki / Star Fish
+Gemcrush (c) 1996 Star Fish
 
-    Fruit Dream (c) 1993 Nippon Data Kiki / Star Fish
-    Gemcrush (c) 1996 Star Fish
+Uses a TC0091LVC, a variant of the one used on Taito L HW
 
-    driver by Angelo Salese
+TODO:
+- inputs are grossly mapped, lack of any input test doesn't help at all;
+- lamps?
+- service mode?
+- nvram?
+- dfruit: has an X on top-left corner after POST, is it supposed to be disabled somehow?
 
-    Uses a TC0091LVC, a variant of the one used on Taito L HW
-
-    TODO:
-    - inputs are grossly mapped, lack of any input test doesn't help at all;
-    - lamps?
-    - service mode?
-    - nvram?
-    - dfruit: (possible bug) has an X on top-left corner after POST,
-              is it supposed to be disabled somehow?
-
-***************************************************************************/
+**************************************************************************************************/
 
 #include "emu.h"
 
@@ -50,8 +46,8 @@ private:
 
 	void output_w(uint8_t data);
 
-	TIMER_DEVICE_CALLBACK_MEMBER(scanline_callback);
-	void program_map(address_map &map);
+	TIMER_DEVICE_CALLBACK_MEMBER(scanline_cb);
+	void main_map(address_map &map);
 	void tc0091lvc_map(address_map &map);
 };
 
@@ -75,7 +71,7 @@ void dfruit_state::tc0091lvc_map(address_map &map)
 	map(0xff08, 0xff08).rw(m_maincpu, FUNC(tc0091lvc_device::rom_bank_r), FUNC(tc0091lvc_device::rom_bank_w));
 }
 
-void dfruit_state::program_map(address_map &map)
+void dfruit_state::main_map(address_map &map)
 {
 	tc0091lvc_map(map);
 	map(0xa000, 0xa003).rw("i8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
@@ -257,7 +253,7 @@ static INPUT_PORTS_START( gemcrush )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 INPUT_PORTS_END
 
-TIMER_DEVICE_CALLBACK_MEMBER(dfruit_state::scanline_callback)
+TIMER_DEVICE_CALLBACK_MEMBER(dfruit_state::scanline_cb)
 {
 	int scanline = param;
 
@@ -291,9 +287,9 @@ void dfruit_state::dfruit(machine_config &config)
 
 	// basic machine hardware
 	TC0091LVC(config, m_maincpu, MASTER_CLOCK / 2);
-	m_maincpu->set_addrmap(AS_PROGRAM, &dfruit_state::program_map);
+	m_maincpu->set_addrmap(AS_PROGRAM, &dfruit_state::main_map);
 
-	TIMER(config, "scantimer").configure_scanline(FUNC(dfruit_state::scanline_callback), "screen", 0, 1);
+	TIMER(config, "scantimer").configure_scanline(FUNC(dfruit_state::scanline_cb), "screen", 0, 1);
 
 	// video hardware
 	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));