commit 62fe7ccb10e71b355420d3fced24ad4d88998dc7
from: Witcher01 <witcher01+github@posteo.net>
date: Sun Aug  1 17:58:29 2021 UTC

fixed instruction matching bug

commit - 6a1ef6ce40bd2354eac59bd4cf402267f8f0add9
commit + 62fe7ccb10e71b355420d3fced24ad4d88998dc7
blob - 5480c388fcc91b147019db698cfee3d85c210393
blob + 5d06393b27541e3e57212e9d545981d5932699c5
--- src/chip8.rs
+++ src/chip8.rs
@@ -50,7 +50,7 @@ impl Chip8 {
         let x = ((instruction & 0x0F00) >> 8) as usize;
         let y = ((instruction & 0x00F0) >> 4) as usize;
 
-        match instruction & 0xF000 {
+        match (instruction & 0xF000) >> 12 {
             0x0 => match nnn {
                 // CLS
                 0x0E0 => {