Projects, 01-06 completed

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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/05/Computer.hdl

+

+/**

+ * The HACK computer, including CPU, ROM and RAM.

+ * When reset is 0, the program stored in the computer's ROM executes.

+ * When reset is 1, the execution of the program restarts. 

+ * Thus, to start a program's execution, reset must be pushed "up" (1)

+ * and "down" (0). From this point onward the user is at the mercy of 

+ * the software. In particular, depending on the program's code, the 

+ * screen may show some output and the user may be able to interact 

+ * with the computer via the keyboard.

+ */

+

+CHIP Computer {

+

+    IN reset;

+

+    PARTS:

+    ROM32K(address=pc, out=instruction);

+    CPU(inM=inM, instruction=instruction, reset=reset, writeM=writeM, outM=outM, addressM=addressM, pc=pc);

+    Memory(in=outM, address=addressM, load=writeM, out=inM);

+}