TLDR
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rvcore is a RV32IM single-core RISC-V emulator in C++20 that boots and runs DOOM via a doomgeneric port.
Key Takeaways
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Implements RV32IM ISA; FENCE and EBREAK are stubbed as NOP, M extension is complete.
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Build chain requires CMake, C++20, libsdl3-dev, and a riscv64 toolchain configured with
rv32im-ilp32 multilib.
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DOOM port lives in a forked doomgeneric repo; newlib stubs were written to bridge syscalls.
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Milestones progressed from flat assembly binaries to ELF loading to full DOOM playability.
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ELF support currently handles single PT_LOAD segment binaries only.
Hacker News Comment Review
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