4 files changed, 171 insertions, 0 deletions
diff --git a/projects/12/ArrayTest/Array.jack b/projects/12/ArrayTest/Array.jack
new file mode 100644
index 0000000..343c25c
--- /dev/null
+++ b/projects/12/ArrayTest/Array.jack
@@ -0,0 +1,26 @@
+// 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/Array.jack
+
+/**
+ * Represents an array.
+ * In the Jack language, arrays are instances of the Array class.
+ * Once declared, the array entries can be accessed using the usual
+ * syntax arr[i]. Each array entry can hold a primitive data type as 
+ * well as any object type. Different array entries can have different 
+ * data types.
+ */
+class Array {
+
+    /** Constructs a new Array of the given size. */
+    function Array new(int size) {
+        return Memory.alloc(size);
+    }
+
+    /** Disposes this array. */
+    method void dispose() {
+        do Memory.deAlloc(this);
+        return;
+    }
+}
diff --git a/projects/12/ArrayTest/Array.vm b/projects/12/ArrayTest/Array.vm
new file mode 100644
index 0000000..c0cd797
--- /dev/null
+++ b/projects/12/ArrayTest/Array.vm
@@ -0,0 +1,12 @@
+function Array.new 0
+push argument 0
+call Memory.alloc 1
+return
+function Array.dispose 0
+push argument 0
+pop pointer 0
+push pointer 0
+call Memory.deAlloc 1
+pop temp 0
+push constant 0
+return
diff --git a/projects/12/ArrayTest/ArrayTest.out b/projects/12/ArrayTest/ArrayTest.out
new file mode 100644
index 0000000..e9f4e75
--- /dev/null
+++ b/projects/12/ArrayTest/ArrayTest.out
@@ -0,0 +1,2 @@
+|RAM[8000]|RAM[8001]|RAM[8002]|RAM[8003]|
+|     222 |     122 |     100 |      10 |
diff --git a/projects/12/ArrayTest/Main.vm b/projects/12/ArrayTest/Main.vm
new file mode 100644
index 0000000..141f20a
--- /dev/null
+++ b/projects/12/ArrayTest/Main.vm
@@ -0,0 +1,131 @@
+function Main.main 4
+push constant 8000
+pop local 0
+push constant 3
+call Array.new 1
+pop local 1
+push constant 2
+push local 1
+add
+push constant 222
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+push local 0
+add
+push constant 2
+push local 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+call Array.new 1
+pop local 2
+push constant 1
+push local 2
+add
+push constant 2
+push local 1
+add
+pop pointer 1
+push that 0
+push constant 100
+sub
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push local 0
+add
+push constant 1
+push local 2
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 500
+call Array.new 1
+pop local 3
+push constant 499
+push local 3
+add
+push constant 2
+push local 1
+add
+pop pointer 1
+push that 0
+push constant 1
+push local 2
+add
+pop pointer 1
+push that 0
+sub
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push local 0
+add
+push constant 499
+push local 3
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+call Array.dispose 1
+pop temp 0
+push local 2
+call Array.dispose 1
+pop temp 0
+push constant 3
+call Array.new 1
+pop local 2
+push constant 0
+push local 2
+add
+push constant 499
+push local 3
+add
+pop pointer 1
+push that 0
+push constant 90
+sub
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+push local 0
+add
+push constant 0
+push local 2
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 3
+call Array.dispose 1
+pop temp 0
+push local 2
+call Array.dispose 1
+pop temp 0
+push constant 0
+return