feat: new framerate and logic

examples/sdl/README.md

@@ -24,3 +24,10 @@ Keys available:
 `A S D F`
 
 `Z X C V`
+
+## ROMs
+
+You can find some good quality game and tools roms here:
+
+* [https://github.com/kripod/chip8-roms](https://github.com/kripod/chip8-roms)
+* [https://github.com/loktar00/chip8](https://github.com/loktar00/chip8)

examples/sdl/src/main.rs

@@ -7,7 +7,7 @@ use std::{fs::File, io::Read};
 const COLORS: [[u8; 3]; 2] = [[255, 255, 255], [80, 203, 147]];
 
 const LOGIC_HZ: u32 = 240;
-const VISUAL_HZ: u32 = 20;
+const VISUAL_HZ: u32 = 60;
 const IDLE_HZ: u32 = 60;
 
 const SCREEN_SCALE: f32 = 15.0;