Add backspace

sysdata/programs/render_example/src/examples/text.hb

@@ -39,7 +39,6 @@ example := fn(): void {
 	color := render.white
 
 	prev_input := 250
-
 	loop {
 		input := memory.inb(96)
 		if input != prev_input {
@@ -59,13 +58,20 @@ example := fn(): void {
 					color = render.blue
 				} else if char == 0x77 {
 					color = render.white
+				} else if char == 0xE {
+					cursor -= 1;
+					*cursor = 32
+
+					continue
 				};
 				*cursor = char
 				cursor += 1
 			}
 		}
 		render.clear(screen, render.black)
+		render.put_rect(screen, .(0, 0), .(screen.width - 1, screen.height - 1), render.white)
 		render.put_text(screen, font, .(0, 0), color, buf)
+
 		render.sync(screen)
 	}
 
@@ -99,6 +105,8 @@ map_keys := fn(inp: u8): u8 {
 		return 0x2D
 	} else if inp == 0xD {
 		return 0x3D
+	} else if inp == 0xE {
+		return 0xE
 	} else if inp == 0x1C {
 		return 0xA
 	} else if inp == 0x10 {