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Tetris 16 bit

After building the 8-bit computer, I decided to give another try to build a 16-bit computer, following the NAND to Tetris course.

Although the course cover both Hardware and Software, I only find it interested to implement the hardware part (Part 1) of the course, includes:

  • Logic gates
  • ALU
  • Computer architecture (16-bit von Neumann machine)
  • Micro OP codes and Machine language
  • Assembler to compile assembly code to machine language
  • Virtual manchine and a virtual machine code
  • VM translator to translate virtual machine code to assembly

The circuit board is implemented in Logism (a logic gate simulator software), the assembler, VM translator and emulator (for testing) are written in JavaScript.

Specifications

Other than my crappy circuit wires / logic gates arrangements, I did not invent anything. The implementations are mine but the specifications of CPU instructions, Machine Language, Assembly Language and VM translator are from the course can be found here: https://www.nand2tetris.org/course

Some screenshots for fun:

Testing my custom LCD screen

Drawing a rectangle

Drawing a spiral

CPU

ALU

Display Control

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16-bit computer in Logism

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