Added soft reboot

README.md

@@ -88,7 +88,6 @@ uxnemu orca.rom | shim
 
 ## GUI Emulator Options
 
-- `-1x` Force small scale
 - `-2x` Force medium scale
 - `-3x` Force large scale
 
@@ -97,7 +96,8 @@ uxnemu orca.rom | shim
 - `F1` toggle zoom
 - `F2` toggle debug
 - `F3` capture screen
-- `F4` load launcher.rom
+- `F4` reboot
+- `F5` soft reboot
 
 ### GUI Buttons
 

src/devices/screen.c

@@ -38,7 +38,7 @@ screen_change(Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2)
 	if(y2 > uxn_screen.y2) uxn_screen.y2 = y2;
 }
 
-static void
+void
 screen_fill(Uint8 *layer, int x1, int y1, int x2, int y2, int color)
 {
 	int x, y, width = uxn_screen.width, height = uxn_screen.height;

src/devices/screen.h

@@ -22,6 +22,7 @@ typedef struct UxnScreen {
 extern UxnScreen uxn_screen;
 extern int emu_resize(int width, int height);
 
+void screen_fill(Uint8 *layer, int x1, int y1, int x2, int y2, int color);
 void screen_palette(Uint8 *addr);
 void screen_resize(Uint16 width, Uint16 height);
 void screen_change(Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2);

src/uxnemu.c

@@ -279,6 +279,21 @@ emu_restart(Uxn *u)
 		emu_start(u, rom_path, 0);
 }
 
+static int
+emu_restart_soft(Uxn *u)
+{
+	int i;
+	for(i = 0x100; i < 0x10000; i++)
+		u->ram[i] = 0;
+	screen_fill(uxn_screen.bg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	screen_fill(uxn_screen.fg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	if(!system_load(u, rom_path))
+		return system_error("Boot", "Failed to load rom.");
+	if(!uxn_eval(u, PAGE_PROGRAM))
+		return system_error("Boot", "Failed to eval rom.");
+	return 1;
+}
+
 static void
 capture_screen(void)
 {
@@ -402,6 +417,8 @@ handle_events(Uxn *u)
 				capture_screen();
 			else if(event.key.keysym.sym == SDLK_F4)
 				emu_restart(u);
+			else if(event.key.keysym.sym == SDLK_F5)
+				emu_restart_soft(u);
 			ksym = event.key.keysym.sym;
 			if(SDL_PeepEvents(&event, 1, SDL_PEEKEVENT, SDL_KEYUP, SDL_KEYUP) == 1 && ksym == event.key.keysym.sym)
 				return 1;