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Demo: https://www.youtube.com/watch?v=f5uygzEmdLwHi HN,I built a RISC-V emulator that implements the RV32IM instruction set and a minimal syscall interface to run DOOM. A few weeks ago, I got my first output with a simple hello world assembly program.Since then I have been working tirelessly to get DOOM to run.I needed to figure out how to run C programs first, and came across newlib, which allows the underlying environment to implement the syscall stubs one by one until the programs run.I have also added ELF loading, but currently only a single `PT_LOAD` segment is supported.To port DOOM, I used doomgeneric, which was quite convenient to get working once the required stubs were in place.DOOM renders to a fixed area in memory (0x705FDD = VRAM_START): 0x7FFFFF +-------------------------------------+
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Show HN: I built a RISC-V emulator that runs DOOM
A demonstration of a functional RISC-V emulator capable of running complex C programs like DOOM, highlighting its instruction set and syscall implementation.
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A demonstration of a functional RISC-V emulator capable of running complex C programs like DOOM, highlighting its instruction set and syscall implementation.
This project demonstrates a foundational engineering achievement: a RISC-V emulator capable of running a significant application like DOOM. While not a direct B2B SaaS product, it showcases deep technical expertise in CPU architecture, operating system interfaces, and low-level programming. Such capabilities are critical for companies developing embedded systems, custom hardware, or specialized software for RISC-V platforms. The ability to emulate and debug complex C programs, including handling memory management and syscalls, validates the emulator's robustness. This work contributes to the broader RISC-V ecosystem, potentially serving as a reference or tool for hardware verification, software development kits, or educational purposes, indirectly supporting the adoption and development of RISC-V based solutions in various industries.
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I built a RISC-V emulator that runs DOOM is analyzed by our AI as: A demonstration of a functional RISC-V emulator capable of running complex C programs like DOOM, highlighting its instruction set and syscall implementation.. It focuses on This project demonstrates a foundational engineering achievement: a RISC-V emulator capable of running a significant application like DOOM. While n...
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The initial public indexing or launch date for I built a RISC-V emulator that runs DOOM within our tracked developer communities was recorded on May 3, 2026.
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Which technical categories define I built a RISC-V emulator that runs DOOM?
Based on metadata extraction, I built a RISC-V emulator that runs DOOM is categorized under topics such as: RISC-V emulator, RV32IM instruction set, minimal syscall interface, DOOM.
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How does the creator describe I built a RISC-V emulator that runs DOOM?
The original author or development team describes the product as follows: "Demo: https://www.youtube.com/watch?v=f5uygzEmdLwHi HN,I built a RISC-V emulator that implements the RV32IM instruction set and a minimal syscall interface to run DOOM. A few weeks ago, I got my fi..."
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