Both those I linked seem to work fine, though the tapes I'm recovering from are mostly in good condition. The Python one is a bit more robust than the one incl

Both those I linked seem to work fine, though the tapes I'm recovering from are mostly in good condition. The Python one is a bit more robust than the one included with ti99sim, but much much slower and picky about DC offset. (Note that both of these also decode the TI's frame format; but it should be easy to pull out the core waveform decoder of either.)