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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/03/a/PC.hdl
-
-/**
- * A 16-bit counter with load and reset control bits.
- * if (reset[t] == 1) out[t+1] = 0
- * else if (load[t] == 1) out[t+1] = in[t]
- * else if (inc[t] == 1) out[t+1] = out[t] + 1 (integer addition)
- * else out[t+1] = out[t]
- */
-
-CHIP PC {
- IN in[16],load,inc,reset;
- OUT out[16];
-
- PARTS:
- // Put your code here:
- Mux16 (a=out5, b=in, sel=load, out=out0);
- Inc16 (in=out0, out=out1);
- Mux16 (a=out1, b=out0, sel=load, out=out2);
- Mux16 (a=out0, b=out2, sel=inc, out=out3);
- Mux16 (a=out3, b=false, sel=reset, out=out4);
- Register (in=out4, load=true, out=out5, out=out);
-
- //Inc16 (in=out4, out=out0);
- //Mux16 (a=out4, b=out0, sel=inc, out=out1);
- //Mux16 (a=out1, b=in, sel=load, out=out2);
- //Mux16 (a=out2, b=false, sel=reset, out=out3);
- //Register (in=out3, load=true, out=out4, out=out);
-}