Oh wow, I once did a port of #doom to the arc firmware of the MIPS Magnum I had kind of forgotten about that.
I was browsing a website of entirely legitimate software backups for a project, and in the Jazz directory (the architecture name Microsoft gave to the MIPS based platform) there was ARCDoom. The port I did and only put on a forum once for fun.
I've been... pirated? 
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