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I came across a module uploaded in 1995, how is that possible?ModArchive went through many different code bases. Most probably the very first version from 1996 didn't store any upload date, so a later iteration of the website which added upload dates simply took the file modification date, which could be older than 1996. Just a theory but it's the most likely explanation from my point of view.
If you ever want to spend more time on this, here are some hints: These simple implementations of sawtooth, square wave, etc. have problems with oscillator frequencies that do not result in integer sample lengths and are not aliasing-free. If you are interested in fixing that, look into bandlimited wavetable synthesis (spoiler: the formulas will look more complex than just "toggle between -1 and +1" for a square wave).
