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Tea Leaves is all about programming like it's 1979. Join us as we explore programming languages current and obsolete, and explore the challenges of working with retro hardware and software. We also, of course, occasionally explore games from the early 8-bit era of computing.
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CPU Lab - From NAND To Tetris, Part 7
5,273 views • May 14, 2021
At long last, we begin building the schematic for our CPU.
*ERRATA*: Alert viewer Ivan points out that the selector for our mux that outputs to the "aIn" tunnel is incorrect - we are using cDestA ...
Building a CPU - From NAND To Tetris, Part 6
3,842 views • May 08, 2021
At long last - we build our computer. This is the last lecture on the hardware portion of our NAND To Tetris journey; in about a week I will post a lab where I walk through the project to show how ...
Machine Language The Hard Way - From NAND To Tetris, Part 6
3,315 views • May 07, 2021
In order to build our CPU, we need to understand a little more about the structure of the Hack machine language and assembly language. So let's disassemble an actual program!
All of the tables I u...
Let's Play: Silicon Zeroes
528 views • Apr 30, 2021
After mentioning it in the NAND To Tetris RAM and memory video, we play the first half of the game Silicon Zeroes, by Pleasing Fungus software.
00:00 - Introduction
01:06 - Wiring
03:00 - Memory
0...
NAND To Tetris 5a: Creating RAM and Memory lab
12,637 views • Apr 25, 2021
00:00 - Intro
00:41 - Bit
05:43 - 16-Bit Register
08:40 - Program Counter
19:08 - Mistakes are normal and you should welcome them
19:57 - RAM8, a bank of 8 16-bit registers
27:24 - RAM64, a bank o...
From NAND To Tetris, Part 5: RAM, Memory, and Sequential Logic
2,549 views • Apr 23, 2021
In today's lecture we talk about sequential logic. What does it mean for a computer to "remember" things, and how can we model it? The answer has a lot to do with time.
From NAND To Tetris, Part 4a: Arithmetic Logic Lab
12,417 views • Apr 16, 2021
In the lab for our Arithmetic Logic we make a number of simple arithmetic circuits, and then spend the majority of our time on the ALU. Mistakes, as always, are made.
To start the class from the b...
From NAND To Tetris, Part 4 - Arithmetic Logic
3,349 views • Apr 11, 2021
We briefly review binary notation, review the two's complement representation of negative numbers, and give some hints for implementing adders and the Arithmetic Logic Unit (ALU). If you have troub...
From NAND To Tetris - Logic Gates Lab
26,178 views • Apr 05, 2021
00:00 - Introduction
00:25- NOT Gate
05:12 - OR Gate
09:20 - AND Gate
13:16 - XOR Gate
19:24 - Multiplexer (Mux)
28:18 - Demultiplexer (Demux)
32:03 - 16-bit NOT
36:52 - 16-bit AND
40:15 - 16-bit M...
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