Add Fkey handling

src/main.ha

@@ -200,7 +200,7 @@ export fn main() void = {
 				case sdl3::EventType::QUIT =>
 					run = false;
 				case sdl3::EventType::WINDOW_RESIZED =>
-					let dims = uxn::get_window_size(state);
+					const dims = uxn::get_window_size(state);
 					let w = ev.window.data1 / scale: i32;
 					let h = ev.window.data2 / scale: i32;
 					const wmod = w % scale: i32;
@@ -285,10 +285,15 @@ export fn main() void = {
 					const mods = ev.key.mod;
 					const sym = sdl3::GetKeyFromScancode(scancode,mods,false);
 					uxn::set_key_down(sym: u8,state);
-					// Handle Debug
-					if(key == sdl3::K_F2){
-						fmt::println("Debug Print:")!;
-						uxn::print_stack_debug(state);
+					// Handle F Keys
+					if(key == sdl3::K_F1){
+						scale = (scale % 3) + 1;
+						const dims = uxn::get_window_size(state);
+						sdl3::SetWindowSize(win,dims.width: i32*scale: i32,dims.height: i32*scale: i32)!;
+					}else if(key == sdl3::K_F2){
+						uxn::emu_deo(0x0e,0x01,state);
+					}else if(key == sdl3::K_F3){
+						state.dev[0x0f] = 0xff;
 					};
 					// Handle keyboard controller keys
 					// Ctrl -> A 0x01

uxn/uxn.ha

@@ -168,7 +168,7 @@ fn emu_dei(port: u8, state: *uxn) u8 = {
 };
 
 
-fn emu_deo(port: u8, value: u8, state: *uxn) void = {
+export fn emu_deo(port: u8, value: u8, state: *uxn) void = {
 	// fmt::printfln("Writing {:x} to port {:x}", value, port)!;
 	state.dev[port] = value;
 	switch(port) {
@@ -176,6 +176,8 @@ fn emu_deo(port: u8, value: u8, state: *uxn) void = {
 		state.ptr[0] = value;
 	case 0x05 =>
 		state.ptr[1] = value;
+	case 0x0e =>
+		print_stack_debug(state);
 	case 0x11 =>
 		let high = state.dev[0x10];
 		let low = value;
@@ -422,6 +424,7 @@ fn get_instruction(byte: u8) (instruction | error) = {
 };
 
 export fn print_stack_debug(state: *uxn) void = {
+	//TODO follow standard form
 	fmt::println("Working Stack:")!;
 	print_stack(false,state);