Case study

slopgs: reconstructing Microsoft GS Wavetable Synth

slopgs reconstructs the behavior of the Windows XP SP3 Microsoft GS Wavetable Synth driver in a portable C synthesizer. Its engine renders MIDI using gm.dls, with native and WebAssembly builds. MIDI probes and spectrogram comparisons against reference recordings guide refinements to synthesis behavior.

Targets: Binary
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 2
Last commit: 2026-11-04
Language: C

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: A C compiler is required for msgs-render; GCC is the tested compiler.
Prerequisites: Clang is required to build msgs.wasm.
Prerequisites: Supply gm.dls from a Windows installation for MIDI rendering.
Scope: The oracle accepts only the Windows XP SP3 swmidi.sys build 5.1.2600.5512, supplied separately.
License: No licence file in the repository.

Cite

BibTeX

@misc{slopgs-case,
  title = {{slopgs: reconstructing Microsoft GS Wavetable Synth}},
  howpublished = {\url{https://github.com/sloptainment/slopgs}},
  url = {https://github.com/sloptainment/slopgs},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/slopgs-case/}}
}

Plain text

slopgs: reconstructing Microsoft GS Wavetable Synth. https://github.com/sloptainment/slopgs (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/slopgs-case/

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About this entry

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Primary sources

README.adoc GitHub · sloptainment/slopgs · Revision 9eb9433
Makefile GitHub · sloptainment/slopgs · Revision 9eb9433
artifacts/oracle/README.md GitHub · sloptainment/slopgs · Revision 9eb9433