diff options
| author | Yuchen Pei <me@ypei.me> | 2017-11-29 12:30:41 +0100 |
|---|---|---|
| committer | Yuchen Pei <me@ypei.me> | 2017-11-29 12:30:41 +0100 |
| commit | a000308104aab27c2dde9a306f1bc654b2db4806 (patch) | |
| tree | aecc628e14c1628b5714281437aba18680cdc27b /projects/12/SysTest | |
first commit
Diffstat (limited to 'projects/12/SysTest')
| -rw-r--r-- | projects/12/SysTest/Main.jack | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/projects/12/SysTest/Main.jack b/projects/12/SysTest/Main.jack new file mode 100644 index 0000000..a153b25 --- /dev/null +++ b/projects/12/SysTest/Main.jack @@ -0,0 +1,31 @@ +// 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/SysTest/Main.jack
+
+/** Test program for the OS Sys class. */
+class Main {
+
+ /** Tests the wait method of the Sys class. */
+ function void main() {
+ var char key;
+
+ do Output.printString("Wait test:");
+ do Output.println();
+ do Output.printString("Press any key. After 2 seconds, another message will be printed:");
+
+ while (key = 0) {
+ let key = Keyboard.keyPressed();
+ }
+ while (~(key = 0)) {
+ let key = Keyboard.keyPressed();
+ }
+
+ do Sys.wait(2000);
+
+ do Output.println();
+ do Output.printString("Time is up. Make sure that 2 seconds elapsed.");
+
+ return;
+ }
+}
|