What if the Sega Genesis had a different PSG chip?

Описание: Sometime in May 2017, I thought: "What if Sega decided to use the Yamaha YM2149 instead of their Texas Instruments SN76489 derivative for the Genesis?" I decided to try and answer that by modifying one of the DefleMask demo songs. The YM2149 is essentially an AY-3-8910 with twice the resolution and a double-rate volume envelope table. While the functionality of the two chips are similar, the AY-3-8910/YM2149 can reach notes lower than what the SN76489 allows. The noise generator also sounds different between the two and the chip also has an envelope generator that can output one of several waveforms rather than the 6.25% pulse wave on the SN76489's noise channel (though with no volume control). I decided to use the song "Dojo" made by Delek, the creator of DefleMask, to hear how it would sound. The red waves are the FM Synthesis waves from the YM2612 chip while the magenta waves come from the Sunsoft 5B (which has a YM2149F embedded inside of it), that latter of which was done in 0CC-FamiTracker. At one point, the noise in the third channel will switch to a square wave. The note which plays in this channel is one octave lower than the note in the second channel, a note which is below the lowest frequency of the SN76489. While the AY3-8910/YM2149 can reach notes lower than the SN76489 chip, all Sega Genesis songs that uses the PSG chip will sound the same, with the possible exception for the songs in which the PSG reaches the higher notes.

Song made by: Delek, with the drum samples changed to those from Donkey Kong Country.
PSG part remade by: SuperJet Spade (as JetStar1997 when this video was uploaded)
Thanks for watching.

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