1 files changed, 0 insertions, 51 deletions
diff --git a/projects/12/Sys.jack b/projects/12/Sys.jack
deleted file mode 100644
index 53c078c..0000000
--- a/projects/12/Sys.jack
+++ /dev/null
@@ -1,51 +0,0 @@
-// This file is part of www.nand2tetris.org
-// and the book "The Elements of Computing Systems"
-// by Nisan and Schocken, MIT Press.
-// File name: projects/12/Sys.jack
-
-/**
- * A library that supports various program execution services.
- */
-class Sys {
-
-    /** Performs all the initializations required by the OS. */
-    function void init() {
-        do Keyboard.init();
-        do Math.init();
-        do Memory.init();
-        do Output.init();
-        do Screen.init();
-        do Main.main();
-        do Sys.halt();
-        return;
-    }
-
-    /** Halts the program execution. */
-    function void halt() {
-        while (true){
-        }
-        return;
-    }
-
-    /** Waits approximately duration milliseconds and returns.  */
-    function void wait(int duration) {
-        var int i, j;
-        let i = 0;
-        while (i < duration){
-            let i = i + 1;
-            let j = 0;
-            while (j < 318){
-                let j = j + 1;
-            }
-        }
-        return;
-    }
-
-    /** Displays the given error code in the form "ERR<errorCode>",
-     *  and halts the program's execution. */
-    function void error(int errorCode) {
-        do Output.printString("ERR");
-        do Output.printInt(errorCode);
-        return;
-    }
-}