mole: reduce unrealistic 6502 clock

src/mame/misc/mole.cpp

@@ -50,8 +50,10 @@
 ******************************************************************************/
 
 #include "emu.h"
+
 #include "cpu/m6502/m6502.h"
 #include "sound/ay8910.h"
+
 #include "emupal.h"
 #include "screen.h"
 #include "speaker.h"
@@ -71,13 +73,16 @@ public:
 
 	void mole(machine_config &config);
 
+protected:
+	virtual void video_start() override ATTR_COLD;
+
 private:
 	required_device<cpu_device> m_maincpu;
 	required_device<gfxdecode_device> m_gfxdecode;
 
 	/* video-related */
 	tilemap_t *m_bg_tilemap = nullptr;
-	int m_tile_bank = 0;
+	uint8_t m_tile_bank = 0;
 
 	/* memory */
 	uint16_t m_tileram[0x400];
@@ -88,9 +93,6 @@ private:
 	void mole_flipscreen_w(uint8_t data);
 	uint8_t mole_protection_r(offs_t offset);
 	TILE_GET_INFO_MEMBER(get_bg_tile_info);
-	virtual void machine_start() override ATTR_COLD;
-	virtual void machine_reset() override ATTR_COLD;
-	virtual void video_start() override ATTR_COLD;
 	uint32_t screen_update_mole(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
 	void mole_map(address_map &map) ATTR_COLD;
 };
@@ -115,6 +117,7 @@ void mole_state::video_start()
 	m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(mole_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 40, 25);
 
 	save_item(NAME(m_tileram));
+	save_item(NAME(m_tile_bank));
 }
 
 void mole_state::mole_tileram_w(offs_t offset, uint8_t data)
@@ -145,7 +148,6 @@ uint32_t mole_state::screen_update_mole(screen_device &screen, bitmap_ind16 &bit
 }
 
 
-
 /*************************************
  *
  *  Memory handlers
@@ -316,20 +318,10 @@ GFXDECODE_END
  *
  *************************************/
 
-void mole_state::machine_start()
-{
-	save_item(NAME(m_tile_bank));
-}
-
-void mole_state::machine_reset()
-{
-	m_tile_bank = 0;
-}
-
 void mole_state::mole(machine_config &config)
 {
 	/* basic machine hardware */
-	M6502(config, m_maincpu, 4000000); // ???
+	M6502(config, m_maincpu, 2000000); // ???
 	m_maincpu->set_addrmap(AS_PROGRAM, &mole_state::mole_map);
 	m_maincpu->set_vblank_int("screen", FUNC(mole_state::irq0_line_assert));
 

src/mame/misc/ssingles.cpp

@@ -15,7 +15,7 @@
  TODO:
  - atamanot: needs a trojan, in order to understand how the protection really works.
  - colors (missing PROM(s) ?)
- - samples (at least two of unused ROMs contains samples (unkn. format , ADPCM ?)
+ - samples (at least two of unused ROMs contains samples (unkn. format, ADPCM ?)
  - dips (one is tested in game (difficulty related?), another 2 are tested at start)
 
  Unknown reads/writes:
@@ -580,7 +580,6 @@ void ssingles_state::ssingles(machine_config &config)
 	SPEAKER(config, "mono").front_center();
 
 	AY8910(config, "ay1", 1'500'000).add_route(ALL_OUTPUTS, "mono", 0.5); // ? MHz
-
 	AY8910(config, "ay2", 1'500'000).add_route(ALL_OUTPUTS, "mono", 0.5); // ? MHz
 }
 

src/mame/misc/sstrangr.cpp

@@ -8,7 +8,6 @@
 /*                                                     */
 /*******************************************************/
 
-
 /*
 ********************************************************
 

src/mame/taito/taito_b.cpp

@@ -3709,13 +3709,9 @@ GAME( 1994, bublbust, pbobble, pbobble,  pbobble,   taitob_state, init_taito_b,
 GAME( 1994, spacedx,  0,       spacedx,  pbobble,   taitob_state, init_taito_b, ROT0,   "Taito Corporation", "Space Invaders DX (US, v2.1)",    MACHINE_SUPPORTS_SAVE )
 GAME( 1994, spacedxj, spacedx, spacedx,  pbobble,   taitob_state, init_taito_b, ROT0,   "Taito Corporation", "Space Invaders DX (Japan, v2.1)", MACHINE_SUPPORTS_SAVE )
 GAME( 1994, spacedxo, spacedx, spacedxo, spacedxo,  taitob_state, init_taito_b, ROT0,   "Taito Corporation", "Space Invaders DX (Japan, v2.0)", MACHINE_SUPPORTS_SAVE )
-/*
+
-    Sonic Blast Man is a ticket dispensing game.
+// Sonic Blast Man is a ticket dispensing game. (Japanese version however does not dispense them, only US does - try the "sbm_patch" in the machine_config).
-    (Japanese version however does not dispense them, only US does - try the "sbm_patch" in the machine_config).
+// It is a bit different from other games running on this system, in that it has a punching pad that player needs to punch to hit the enemy.
-    It is a bit different from other games running on this system,
-    in that it has a punching pad that player needs to punch to hit
-    the enemy.
-*/
 GAME( 1990, sbm,      0,       sbm,      sbm,       taitob_state,   init_taito_b, ROT0, "Taito Corporation",       "Sonic Blast Man (US)",    MACHINE_SUPPORTS_SAVE | MACHINE_MECHANICAL )
 GAME( 1990, sbmj,     sbm,     sbm,      sbmj,      taitob_state,   init_taito_b, ROT0, "Taito Corporation",       "Sonic Blast Man (Japan)", MACHINE_SUPPORTS_SAVE | MACHINE_MECHANICAL )
 GAME( 1994, realpunc, 0,       realpunc, realpunc,  taitob_c_state, init_taito_b, ROT0, "Taito Corporation Japan", "Real Puncher (World, v2.12O)",   MACHINE_SUPPORTS_SAVE | MACHINE_MECHANICAL )