Nand2Tetris Questions and Answers Forum

If you have questions about Nand2Tetris projects or software, you are in the right place. Please select a sub-forum and review the posts; there is a good chance that a similar question was previously asked and answered. If not,  post your question, and we will answer it shortly. If you feel like answering some of the questions yourself, feel free. Please avoid posting solutions or solution segments (a few lines of code is fine). It's important to let people have the freedom to build the computer on their own.


Due to a large number of spam posts, you must be a registered member to post to the forum.

We are in the process of moving the nand2tetris.or site to another hosting service. Links may be temporarily bad.
If you find a bad link please report it in the "Errata/web site" section of this forum.


You can download the nand2tetris.zip file here if that link is still broken.
123456 ... 62
Topics (2163)
Replies Last Post Views Sub Forum
DFF/clock necessity by Vfffzx
8
by cadet1620
Chapter 3
Prolog implementation by Sunomis
3
by cadet1620
Chapter 3
Hello from the UK by burge91
0
by burge91
Users Forum
codeWriter(exp) by Ju Se Hoon
2
by Ju Se Hoon
Chapter 11
Error on page 70 under "Screen" subsection and some unclear notation by AverageOyster
0
by AverageOyster
Book
How to translate these VM commands? by riverfish
3
by cadet1620
Chapter 7
Cannot process .jack files in directory by Ju Se Hoon
1
by cadet1620
Chapter 10
Download link seems to be broken by greendwin
2
by greendwin
Other
NestedCall Test Fail by charlie101010
3
by cadet1620
Virtual Machine
Confused about CPU-external.cmp by gnb03
1
by cadet1620
Chapter 5
I do not understand the math notation in this chapter. by burge91
6
by cadet1620
Chapter 3
[solved] Ram8.tst getting stuck - hickup... by OppaErich
3
by OppaErich
Chapter 3
All ch.8 tests pass except FibonacciElement. SOLVED. by shane
0
by shane
Project 8
How do I do an If statement ? by kingayo
6
by cadet1620
Chapter 2
Building DFF and Register using multiplexors by cadet1620
0
by cadet1620
Chapter 3
Why won't my CPU.hdl load? by riverfish
3
by cadet1620
Chapter 5
Hello from Brazil by mfrankowicz
1
by cadet1620
Users Forum
What does the a-bit in a C-instruction mean? by riverfish
10
by riverfish
Chapter 5
Why doesn't this Memory implementation work? by riverfish
4
by riverfish
Chapter 5
What's the difference between A and M? by riverfish
8
by riverfish
Chapter 4
Mult.asm keeps failing by Connor_Walsh
15
by Mrinal
Chapter 4
Why does it take so long to fill? by riverfish
2
by riverfish
Chapter 4
Please point me to resources about computer memory by burge91
2
by xedover
Other
Are the test programs complete? by burge91
7
by cadet1620
Chapter 2
Electronics engeneer course by Squallhisoka
1
by OppaErich
Other
Keep getting HDL errors ALU.hdl by OppaErich
3
by OppaErich
Project 2
How to use helper gates ? by OppaErich
5
by cadet1620
Errata, Bugs, and Such
Making the Logic gates in C++ (stuck on Demultiplexer) by burge91
3
by burge91
Chapter 1
Truncated error messages by OppaErich
2
by OppaErich
Errata, Bugs, and Such
Logic simplification using Karnaugh Maps (k-maps) by cadet1620
2
by OppaErich
Hardware
0;JMP - Expression expected error by nakamurabob
2
by nakamurabob
Project 7
NOt16.hdl by ananda73
0
by ananda73
Project 1
Ideas for a Slightly More Powerful CPU by Warren Toomey
6
by tungsten
Architecture
How to handle comments using API by twitu
1
by cadet1620
Project 6
New Heap Management algorithm (Coursera version) by cadet1620
0
by cadet1620
Project 12
123456 ... 62