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-rw-r--r--projects/12/KeyboardTest/KeyboardTestOutput.gifbin0 -> 12048 bytes
-rw-r--r--projects/12/KeyboardTest/Main.jack93
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diff --git a/projects/12/KeyboardTest/KeyboardTestOutput.gif b/projects/12/KeyboardTest/KeyboardTestOutput.gif
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diff --git a/projects/12/KeyboardTest/Main.jack b/projects/12/KeyboardTest/Main.jack
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+// 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/KeyboardTest/Main.jack
+
+/** Test program for the OS Keyboard class. */
+class Main {
+
+ /** Gets input from the user and verifies its contents. */
+ function void main() {
+ var char c, key;
+ var String s;
+ var int i;
+ var boolean ok;
+
+ let ok = false;
+ do Output.printString("keyPressed test:");
+ do Output.println();
+ while (~ok) {
+ do Output.printString("Please press the 'Page Down' key");
+ while (key = 0) {
+ let key = Keyboard.keyPressed();
+ }
+ let c = key;
+ while (~(key = 0)) {
+ let key = Keyboard.keyPressed();
+ }
+
+ do Output.println();
+
+ if (c = 137) {
+ do Output.printString("ok");
+ do Output.println();
+ let ok = true;
+ }
+ }
+
+ let ok = false;
+ do Output.printString("readChar test:");
+ do Output.println();
+ do Output.printString("(Verify that the pressed character is echoed to the screen)");
+ do Output.println();
+ while (~ok) {
+ do Output.printString("Please press the number '3': ");
+ let c = Keyboard.readChar();
+
+ do Output.println();
+
+ if (c = 51) {
+ do Output.printString("ok");
+ do Output.println();
+ let ok = true;
+ }
+ }
+
+ let ok = false;
+ do Output.printString("readLine test:");
+ do Output.println();
+ do Output.printString("(Verify echo and usage of 'backspace')");
+ do Output.println();
+ while (~ok) {
+ let s = Keyboard.readLine("Please type 'JACK' and press enter: ");
+
+ if (s.length() = 4) {
+ if ((s.charAt(0) = 74) & (s.charAt(1) = 65) & (s.charAt(2) = 67) & (s.charAt(3) = 75)) {
+ do Output.printString("ok");
+ do Output.println();
+ let ok = true;
+ }
+ }
+ }
+
+ let ok = false;
+ do Output.printString("readInt test:");
+ do Output.println();
+ do Output.printString("(Verify echo and usage of 'backspace')");
+ do Output.println();
+ while (~ok) {
+ let i = Keyboard.readInt("Please type '-32123' and press enter: ");
+
+ if (i = (-32123)) {
+ do Output.printString("ok");
+ do Output.println();
+ let ok = true;
+ }
+ }
+
+ do Output.println();
+ do Output.printString("Test completed successfully");
+
+ return;
+ }
+}