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8080 Computer playing Portal Still Alive




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Published on Jan 12, 2008

Bah. I liked the terminal theme from Portal so I made it real!

Everything on the terminals and sound is controlled by an Intel 8080 Microprocessor at 2MHz. The sound chip is a MOS SID (From a Commodore 64).

The assembler source code and an MP3 is at

More details for the computer system itself can be found at

It seems that YouTube doesn't like videos with sound recorded in mono, so only the left speaker works. Sorry about that.


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