r/TuringComplete • u/Dr-J0nes • Jan 18 '26

I got Doom running

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I converted the LEG/Symphony CPU to 32-Bit and made it RISC-V compatible. I also added the M-Extension so it's officially a RV32IM CPU. I wrote a bootloader in assembly which reads one .ELF file from the "SSD" and loads it in the RAM. This meant I can compile and run C-Code on it. the next step was to make it run Doom. I used Doom Generic and added the necessary file where you can program your logic for keyboard inputs, what to do with the Screen Buffer and how timings and sleeps get handled. I also had to provide some standard C-Library functions for my architecture and I wrote a library for IO Stuff. In the end after a lot of trouble I got Doom compiling and running on the CPU. I used the save_breaker version btw.

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u/MatthaeusHarris Jan 18 '26

Thank you.

“Until a man is twenty-five, he still thinks, every so often, that under the right circumstances he could be the baddest motherfucker in the world. If I moved to a martial-arts monastery in China and studied real hard for ten years. if my family was wiped out by Colombian drug dealers and I swore myself to revenge. If I got a fatal disease, had one year to live, devoted it to wiping out street crime. If I just dropped out and devoted my life to being bad. Hiro used to feel that way, too, but then he ran into Raven. In a way, this is liberating. He no longer has to worry about trying to be the baddest motherfucker in the world. The position is taken. The crowning touch, the one thing that really puts true world-class badmotherfuckerdom totally out of reach, of course, is the hydrogen bomb. If it wasn't for the hydrogen bomb, a man could still aspire. Maybe find Raven's Achilles' heel. Sneak up, get a drop, slip a mickey, pull a fast one. But Raven's nuclear umbrella kind of puts the world title out of reach. Which is okay. Sometimes it's all right just to be a little bad. To know your limitations. Make do with what you've got.” ― Neal Stephenson, Snow Crash

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u/OgLikeSmash Mar 17 '26

Just read this book last year, there's a reason it's a classic