diff --git a/src/emu/debugint/debugint.c b/src/emu/debugint/debugint.c
index 0a7e7a1d5cf..1aa189ee48c 100644
--- a/src/emu/debugint/debugint.c
+++ b/src/emu/debugint/debugint.c
@@ -467,7 +467,7 @@ static void dview_draw_title(DView *dv)
 	}
 }
 
-static int dview_on_mouse(DView *dv, int mx, int my, int button)
+static int dview_on_mouse(DView *dv, int mx, int my, bool button)
 {
 	int clicked = (button && !dview_is_state(dv, VIEW_STATE_BUTTON));
 	int handled = TRUE;
@@ -1233,7 +1233,7 @@ static void handle_mouse(running_machine &machine)
 {
 	render_target * mouse_target;
 	INT32           x,y;
-	int             button;
+	bool            button;
 
 	if (menu != NULL)
 		return;
diff --git a/src/emu/drivers/empty.c b/src/emu/drivers/empty.c
index 492f60da756..ef36e759e01 100644
--- a/src/emu/drivers/empty.c
+++ b/src/emu/drivers/empty.c
@@ -29,7 +29,7 @@ public:
 	virtual void machine_start()
 	{
 		// force the UI to show the game select screen
-		ui_menu_force_game_select(machine(), &machine().render().ui_container());
+		ui_menu_select_game::force_game_select(machine(), &machine().render().ui_container());
 	}
 
 	UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
diff --git a/src/emu/ioport.c b/src/emu/ioport.c
index 56dd8e3fed8..4aa531b29c5 100644
--- a/src/emu/ioport.c
+++ b/src/emu/ioport.c
@@ -841,6 +841,18 @@ void input_type_entry::configure_osd(const char *token, const char *name)
 }
 
 
+//-------------------------------------------------
+//  restore_default_seq - restores the sequence
+//	from the default
+//-------------------------------------------------
+
+void input_type_entry::restore_default_seq()
+{
+	for (input_seq_type seqtype = SEQ_TYPE_STANDARD; seqtype < SEQ_TYPE_TOTAL; seqtype++)
+		m_seq[seqtype] = defseq(seqtype);
+}
+
+
 //**************************************************************************
 //  DIGITAL JOYSTICKS
 //**************************************************************************
@@ -2655,6 +2667,32 @@ time_t ioport_manager::initialize()
 	// register callbacks for when we load configurations
 	config_register(machine(), "input", config_saveload_delegate(FUNC(ioport_manager::load_config), this), config_saveload_delegate(FUNC(ioport_manager::save_config), this));
 
+	// calculate "has..." values
+	{
+		m_has_configs = false;
+		m_has_analog = false;
+		m_has_dips = false;
+		m_has_bioses = false;
+
+		// scan the input port array to see what options we need to enable
+		for (ioport_port *port = first_port(); port != NULL; port = port->next())
+			for (ioport_field *field = port->first_field(); field != NULL; field = field->next())
+			{
+				if (field->type() == IPT_DIPSWITCH)
+					m_has_dips = true;
+				if (field->type() == IPT_CONFIG)
+					m_has_configs = true;
+				if (field->is_analog())
+					m_has_analog = true;
+			}
+		device_iterator deviter(machine().root_device());
+		for (device_t *device = deviter.first(); device != NULL; device = deviter.next())
+			if (device->rom_region())
+				for (const rom_entry *rom = device->rom_region(); !ROMENTRY_ISEND(rom); rom++)
+					if (ROMENTRY_ISSYSTEM_BIOS(rom)) { m_has_bioses= true; break; }
+	}
+
+
 	// open playback and record files if specified
 	time_t basetime = playback_init();
 	record_init();
@@ -2680,7 +2718,7 @@ void ioport_manager::init_port_types()
 	{
 		// first copy all the OSD-updated sequences into our current state
 		for (input_seq_type seqtype = SEQ_TYPE_STANDARD; seqtype < SEQ_TYPE_TOTAL; seqtype++)
-			curtype->m_seq[seqtype] = curtype->defseq(seqtype);
+			curtype->restore_default_seq();
 
 		// also make a lookup table mapping type/player to the appropriate type list entry
 		m_type_to_entry[curtype->type()][curtype->player()] = curtype;
@@ -2993,7 +3031,7 @@ g_profiler.start(PROFILER_INPUT);
 
 	// perform mouse hit testing
 	INT32 mouse_target_x, mouse_target_y;
-	int mouse_button;
+	bool mouse_button;
 	render_target *mouse_target = ui_input_find_mouse(machine(), &mouse_target_x, &mouse_target_y, &mouse_button);
 
 	// if the button is pressed, map the point and determine what was hit
diff --git a/src/emu/ioport.h b/src/emu/ioport.h
index 8ab639e92ce..1792094264a 100644
--- a/src/emu/ioport.h
+++ b/src/emu/ioport.h
@@ -721,6 +721,7 @@ public:
 	const char *name() const { return m_name; }
 	input_seq &defseq(input_seq_type seqtype = SEQ_TYPE_STANDARD) { return m_defseq[seqtype]; }
 	const input_seq &seq(input_seq_type seqtype = SEQ_TYPE_STANDARD) const { return m_seq[seqtype]; }
+	void restore_default_seq();
 
 	// setters
 	void configure_osd(const char *token, const char *name);
@@ -1217,6 +1218,12 @@ public:
 	ioport_port *first_port() const { return m_portlist.first(); }
 	bool safe_to_read() const { return m_safe_to_read; }
 	natural_keyboard &natkeyboard() { return m_natkeyboard; }
+ 
+	// has... getters
+	bool has_configs() const { return m_has_configs; }
+	bool has_analog() const { return m_has_analog; }
+	bool has_dips() const { return m_has_dips; }
+	bool has_bioses() const { return m_has_bioses; }
 
 	// type helpers
 	input_type_entry *first_type() const { return m_typelist.first(); }
@@ -1296,6 +1303,12 @@ private:
 	emu_file                m_playback_file;        // playback file (NULL if not recording)
 	UINT64                  m_playback_accumulated_speed; // accumulated speed during playback
 	UINT32                  m_playback_accumulated_frames; // accumulated frames during playback
+
+	// has...
+	bool					m_has_configs;
+	bool					m_has_analog;
+	bool					m_has_dips;
+	bool					m_has_bioses;
 };
 
 
diff --git a/src/emu/machine.c b/src/emu/machine.c
index 59733d7e8c1..0d9acf9bc1e 100644
--- a/src/emu/machine.c
+++ b/src/emu/machine.c
@@ -483,7 +483,7 @@ void running_machine::schedule_exit()
 	if (m_exit_to_game_select && options().system_name()[0] != 0)
 	{
 		options().set_system_name("");
-		ui_menu_force_game_select(*this, &render().ui_container());
+		ui_menu_select_game::force_game_select(*this, &render().ui_container());
 	}
 
 	// otherwise, exit for real
@@ -770,6 +770,19 @@ void running_machine::resume()
 }
 
 
+//-------------------------------------------------
+//  toggle_pause - toggles the pause state
+//-------------------------------------------------
+
+void running_machine::toggle_pause()
+{
+	if (paused())
+		resume();
+	else
+		pause();
+}
+
+
 //-------------------------------------------------
 //  add_notifier - add a notifier of the
 //  given type
diff --git a/src/emu/machine.h b/src/emu/machine.h
index fc78302b862..81418e43665 100644
--- a/src/emu/machine.h
+++ b/src/emu/machine.h
@@ -230,6 +230,7 @@ public:
 	int run(bool firstrun);
 	void pause();
 	void resume();
+	void toggle_pause();
 	void add_notifier(machine_notification event, machine_notify_delegate callback);
 	void call_notifiers(machine_notification which);
 	void add_logerror_callback(logerror_callback callback);
diff --git a/src/emu/ui.c b/src/emu/ui.c
index 926052a92ce..7ffcf7311c6 100644
--- a/src/emu/ui.c
+++ b/src/emu/ui.c
@@ -95,14 +95,14 @@ static UINT32 (*ui_handler_callback)(running_machine &, render_container *, UINT
 static UINT32 ui_handler_param;
 
 /* flag to track single stepping */
-static int single_step;
+static bool single_step;
 
 /* FPS counter display */
 static int showfps;
 static osd_ticks_t showfps_end;
 
 /* profiler display */
-static int show_profiler;
+static bool show_profiler;
 
 /* popup text display */
 static osd_ticks_t popup_text_end;
@@ -116,7 +116,7 @@ static slider_state *slider_list;
 static slider_state *slider_current;
 
 /* natural keyboard info */
-static int ui_use_natural_keyboard;
+static bool ui_use_natural_keyboard;
 static UINT8 non_char_keys_down[(ARRAY_LENGTH(non_char_keys) + 7) / 8];
 
 
@@ -278,7 +278,7 @@ int ui_init(running_machine &machine)
 	ui_gfx_init(machine);
 
 	/* reset globals */
-	single_step = FALSE;
+	single_step = false;
 	ui_set_handler(handler_messagebox, 0);
 	/* retrieve options */
 	ui_use_natural_keyboard = machine.options().natural_keyboard();
@@ -447,7 +447,7 @@ void ui_update_and_render(running_machine &machine, render_container *container)
 	if (ui_mouse_show || (ui_is_menu_active() && machine.options().ui_mouse()))
 	{
 		INT32 mouse_target_x, mouse_target_y;
-		int mouse_button;
+		bool mouse_button;
 		render_target *mouse_target = ui_input_find_mouse(machine, &mouse_target_x, &mouse_target_y, &mouse_button);
 
 		if (mouse_target != NULL)
@@ -1392,7 +1392,7 @@ static UINT32 handler_ingame(running_machine &machine, render_container *contain
 	if (single_step)
 	{
 		machine.pause();
-		single_step = FALSE;
+		single_step = false;
 	}
 
 	/* determine if we should disable the rest of the UI */
@@ -1500,13 +1500,11 @@ static UINT32 handler_ingame(running_machine &machine, render_container *contain
 		/* with a shift key, it is single step */
 		if (is_paused && (machine.input().code_pressed(KEYCODE_LSHIFT) || machine.input().code_pressed(KEYCODE_RSHIFT)))
 		{
-			single_step = TRUE;
+			single_step = true;
 			machine.resume();
 		}
-		else if (machine.paused())
-			machine.resume();
 		else
-			machine.pause();
+			machine.toggle_pause();
 	}
 
 	/* handle a toggle cheats request */
@@ -2300,7 +2298,7 @@ static INT32 slider_crossoffset(running_machine &machine, void *arg, astring *st
     whether the natural keyboard is active
 -------------------------------------------------*/
 
-int ui_get_use_natural_keyboard(running_machine &machine)
+bool ui_get_use_natural_keyboard(running_machine &machine)
 {
 	return ui_use_natural_keyboard;
 }
@@ -2312,7 +2310,7 @@ int ui_get_use_natural_keyboard(running_machine &machine)
     whether the natural keyboard is active
 -------------------------------------------------*/
 
-void ui_set_use_natural_keyboard(running_machine &machine, int use_natural_keyboard)
+void ui_set_use_natural_keyboard(running_machine &machine, bool use_natural_keyboard)
 {
 	ui_use_natural_keyboard = use_natural_keyboard;
 	astring error;
diff --git a/src/emu/ui.h b/src/emu/ui.h
index 69172854a10..6ae570cc7fd 100644
--- a/src/emu/ui.h
+++ b/src/emu/ui.h
@@ -187,9 +187,9 @@ const slider_state *ui_get_slider_list(void);
 void ui_paste(running_machine &machine);
 
 /* returns whether the natural keyboard is active */
-int ui_get_use_natural_keyboard(running_machine &machine);
+bool ui_get_use_natural_keyboard(running_machine &machine);
 
 /* specifies whether the natural keyboard is active */
-void ui_set_use_natural_keyboard(running_machine &machine, int use_natural_keyboard);
+void ui_set_use_natural_keyboard(running_machine &machine, bool use_natural_keyboard);
 
 #endif  /* __USRINTRF_H__ */
diff --git a/src/emu/uiinput.c b/src/emu/uiinput.c
index da6eb1efc24..865a8656119 100644
--- a/src/emu/uiinput.c
+++ b/src/emu/uiinput.c
@@ -44,7 +44,7 @@ struct ui_input_private
 	render_target *             current_mouse_target;
 	INT32                       current_mouse_x;
 	INT32                       current_mouse_y;
-	int                         current_mouse_down;
+	bool                        current_mouse_down;
 
 	/* popped states; ring buffer of ui_events */
 	ui_event                    events[EVENT_QUEUE_SIZE];
@@ -113,7 +113,7 @@ void ui_input_frame_update(running_machine &machine)
     onto the queue
 -------------------------------------------------*/
 
-int ui_input_push_event(running_machine &machine, ui_event evt)
+bool ui_input_push_event(running_machine &machine, ui_event evt)
 {
 	ui_input_private *uidata = machine.ui_input_data;
 
@@ -140,11 +140,11 @@ int ui_input_push_event(running_machine &machine, ui_event evt)
 			break;
 
 		case UI_EVENT_MOUSE_DOWN:
-			uidata->current_mouse_down = TRUE;
+			uidata->current_mouse_down = true;
 			break;
 
 		case UI_EVENT_MOUSE_UP:
-			uidata->current_mouse_down = FALSE;
+			uidata->current_mouse_down = false;
 			break;
 
 		default:
@@ -154,11 +154,11 @@ int ui_input_push_event(running_machine &machine, ui_event evt)
 
 	/* is the queue filled up? */
 	if ((uidata->events_end + 1) % ARRAY_LENGTH(uidata->events) == uidata->events_start)
-		return FALSE;
+		return false;
 
 	uidata->events[uidata->events_end++] = evt;
 	uidata->events_end %= ARRAY_LENGTH(uidata->events);
-	return TRUE;
+	return true;
 }
 
 
@@ -166,21 +166,21 @@ int ui_input_push_event(running_machine &machine, ui_event evt)
     ui_input_pop_event - pops an event off of the queue
 -------------------------------------------------*/
 
-int ui_input_pop_event(running_machine &machine, ui_event *evt)
+bool ui_input_pop_event(running_machine &machine, ui_event *evt)
 {
 	ui_input_private *uidata = machine.ui_input_data;
-	int result;
+	bool result;
 
 	if (uidata->events_start != uidata->events_end)
 	{
 		*evt = uidata->events[uidata->events_start++];
 		uidata->events_start %= ARRAY_LENGTH(uidata->events);
-		result = TRUE;
+		result = true;
 	}
 	else
 	{
 		memset(evt, 0, sizeof(*evt));
-		result = FALSE;
+		result = false;
 	}
 	return result;
 }
@@ -211,7 +211,7 @@ void ui_input_reset(running_machine &machine)
     location of the mouse
 -------------------------------------------------*/
 
-render_target *ui_input_find_mouse(running_machine &machine, INT32 *x, INT32 *y, int *button)
+render_target *ui_input_find_mouse(running_machine &machine, INT32 *x, INT32 *y, bool *button)
 {
 	ui_input_private *uidata = machine.ui_input_data;
 	if (x != NULL)
diff --git a/src/emu/uiinput.h b/src/emu/uiinput.h
index a54f297de70..ef4de041ce5 100644
--- a/src/emu/uiinput.h
+++ b/src/emu/uiinput.h
@@ -62,16 +62,16 @@ void ui_input_init(running_machine &machine);
 void ui_input_frame_update(running_machine &machine);
 
 /* pushes a single event onto the queue */
-int ui_input_push_event(running_machine &machine, ui_event event);
+bool ui_input_push_event(running_machine &machine, ui_event event);
 
 /* pops an event off of the queue */
-int ui_input_pop_event(running_machine &machine, ui_event *event);
+bool ui_input_pop_event(running_machine &machine, ui_event *event);
 
 /* clears all outstanding events */
 void ui_input_reset(running_machine &machine);
 
 /* retrieves the current location of the mouse */
-render_target *ui_input_find_mouse(running_machine &machine, INT32 *x, INT32 *y, int *button);
+render_target *ui_input_find_mouse(running_machine &machine, INT32 *x, INT32 *y, bool *button);
 
 
 
diff --git a/src/emu/uimain.c b/src/emu/uimain.c
index 79e078d3cbf..82033ae1232 100644
--- a/src/emu/uimain.c
+++ b/src/emu/uimain.c
@@ -70,11 +70,11 @@ UINT32 ui_menu_sliders::ui_handler(running_machine &machine, render_container *c
 
 
 /*-------------------------------------------------
-    ui_menu_force_game_select - force the game
+    force_game_select - force the game
     select menu to be visible and inescapable
 -------------------------------------------------*/
 
-void ui_menu_force_game_select(running_machine &machine, render_container *container)
+void ui_menu_select_game::force_game_select(running_machine &machine, render_container *container)
 {
 	char *gamename = (char *)machine.options().system_name();
 
@@ -109,29 +109,7 @@ ui_menu_main::ui_menu_main(running_machine &machine, render_container *container
 
 void ui_menu_main::populate()
 {
-	ioport_field *field;
-	ioport_port *port;
-	int has_configs = false;
-	int has_analog = false;
-	int has_dips = false;
-	int has_bioses = false;
 	astring menu_text;
-	/* scan the input port array to see what options we need to enable */
-	for (port = machine().ioport().first_port(); port != NULL; port = port->next())
-		for (field = port->first_field(); field != NULL; field = field->next())
-		{
-			if (field->type() == IPT_DIPSWITCH)
-				has_dips = true;
-			if (field->type() == IPT_CONFIG)
-				has_configs = true;
-			if (field->is_analog())
-				has_analog = true;
-		}
-	device_iterator deviter(machine().root_device());
-	for (device_t *device = deviter.first(); device != NULL; device = deviter.next())
-		if (device->rom_region())
-			for (const rom_entry *rom = device->rom_region(); !ROMENTRY_ISEND(rom); rom++)
-				if (ROMENTRY_ISSYSTEM_BIOS(rom)) { has_bioses= true; break; }
 
 	/* add input menu items */
 	item_append("Input (general)", NULL, 0, (void *)INPUT_GROUPS);
@@ -140,11 +118,11 @@ void ui_menu_main::populate()
 	item_append(menu_text.cstr(), NULL, 0, (void *)INPUT_SPECIFIC);
 
 	/* add optional input-related menus */
-	if (has_analog)
+	if (machine().ioport().has_analog())
 		item_append("Analog Controls", NULL, 0, (void *)ANALOG);
-	if (has_dips)
+	if (machine().ioport().has_dips())
 		item_append("Dip Switches", NULL, 0, (void *)SETTINGS_DIP_SWITCHES);
-	if (has_configs)
+	if (machine().ioport().has_configs())
 	{
 		menu_text.printf("%s Configuration",emulator_info::get_capstartgamenoun());
 		item_append(menu_text.cstr(), NULL, 0, (void *)SETTINGS_DRIVER_CONFIG);
@@ -177,7 +155,7 @@ void ui_menu_main::populate()
 			item_append("Bitbanger Control", NULL, 0, (void *)MESS_MENU_BITBANGER_CONTROL);
 	}
 
-	if (has_bioses)
+	if (machine().ioport().has_bioses())
 		item_append("Bios Selection", NULL, 0, (void *)BIOS_SELECTION);
 
 	slot_interface_iterator slotiter(machine().root_device());
diff --git a/src/emu/uimain.h b/src/emu/uimain.h
index 0e0bd6a5261..0f1b2a7f64e 100644
--- a/src/emu/uimain.h
+++ b/src/emu/uimain.h
@@ -352,6 +352,9 @@ public:
 	virtual void handle();
 	virtual void custom_render(void *selectedref, float top, float bottom, float x, float y, float x2, float y2);
 
+	// force game select menu
+	static void force_game_select(running_machine &machine, render_container *container);
+
 private:
 	enum { VISIBLE_GAMES_IN_LIST = 15 };
 	UINT8               error;
@@ -374,7 +377,5 @@ public:
 
 private:
 };
-/* force game select menu */
-void ui_menu_force_game_select(running_machine &machine, render_container *container);
 
 #endif  /* __UIMAIN_H__ */
diff --git a/src/emu/uimenu.c b/src/emu/uimenu.c
index 0ee58708e85..ae4de629314 100644
--- a/src/emu/uimenu.c
+++ b/src/emu/uimenu.c
@@ -414,7 +414,7 @@ void ui_menu::draw(bool customonly)
 	int visible_lines;
 	int top_line;
 	int itemnum, linenum;
-	int mouse_hit, mouse_button;
+	bool mouse_hit, mouse_button;
 	render_target *mouse_target;
 	INT32 mouse_target_x, mouse_target_y;
 	float mouse_x = -1, mouse_y = -1;
@@ -487,14 +487,14 @@ void ui_menu::draw(bool customonly)
 	effective_left = visible_left + gutter_width;
 
 	/* locate mouse */
-	mouse_hit = FALSE;
-	mouse_button = FALSE;
+	mouse_hit = false;
+	mouse_button = false;
 	if (!customonly)
 	{
 		mouse_target = ui_input_find_mouse(machine(), &mouse_target_x, &mouse_target_y, &mouse_button);
 		if (mouse_target != NULL)
 			if (mouse_target->map_point_container(mouse_target_x, mouse_target_y, *container, mouse_x, mouse_y))
-				mouse_hit = TRUE;
+				mouse_hit = true;
 	}
 
 	/* loop over visible lines */