From d3a0cc3a8ba6dfeb64d3faeffdeb6845b60e5840 Mon Sep 17 00:00:00 2001 From: Yuchen Pei Date: Sat, 20 Jan 2018 15:41:49 +0100 Subject: rearranged the dir for github - removed tools and pdfs - rearranged the projects dirs - added md files - other minor changes --- projects/demo/Xor.hdl | 25 ------------------------- 1 file changed, 25 deletions(-) delete mode 100644 projects/demo/Xor.hdl (limited to 'projects/demo/Xor.hdl') diff --git a/projects/demo/Xor.hdl b/projects/demo/Xor.hdl deleted file mode 100644 index db49351..0000000 --- a/projects/demo/Xor.hdl +++ /dev/null @@ -1,25 +0,0 @@ -// 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/demo/Xor.hdl - -/** - * Exclusive-or gate: true if either a is true and b is false, or - * a is false and b is true; false otherwise. - * QUESTION: how can the simulator execute this program properly without - * HDL implementations of the underlying Not, And, and Or chip-parts? - * Answer: since the demo folder contains no Not.hdl, And.hdl and Or.hdl - * files, the simulator reverts to using their built-in implementations. - */ - -CHIP Xor { - IN a, b; - OUT out; - - PARTS: - Not (in=a, out=nota); - Not (in=b, out=notb); - And (a=a, b=notb, out=x); - And (a=nota, b=b, out=y); - Or (a=x, b=y, out=out); -} \ No newline at end of file -- cgit v1.2.3