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Space Invaders on the CHIP-8 VM running on a . (📷: Paweł Marczewski)

CHIP-8 is an interpreted programming language, that ran on a number of 8-bit micro-computers between the late 1970s and early 1980s. The machines typically had on a few KB of memory, so the CHIP-8 interpreter itself was crammed into only 512 bytes of memory, while programs—generally entered in raw hexadecimal—were of similar size, or even at smaller and run on a CHIP-8 virtual machine.

Revived in the 1990s by Andreas Gustafsson to provide an interpreted language for the then popular HP-48 graphing calculators to let people write general use programs and, rather critically, games. This CHIP-48 port as it became known was the inspiration for a number of other ports; however most of these were based around a CHIP-8 emulator and disassembler written by David Winter.

A modern CHIP-8 emulator written in Python using Pygame. (📹: Plrang)

Full details of the Marczewski’s FPGA port can be found in the project’s GitHub repo, and the code is licensed under the MIT license, except for the games subdirectory. This contains copies of many of the classic video games ported to CHIP-8 like Pong, Space Invaders, Tetris, and Pac-Man. These are, reportedly, but not terribly reliably, usually regarded as being in the public domain.



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