Posted By
gerliczer
on 2023-09-07
10:03:20
|  Re: Introducing the DigiMoooZ!
My two cents.
Three registers in the speech synth address window programming model is stupid, you should avoid it. No "legacy mode", please. There are not too many programmes for the original so no big software library to patch if needed at all.
ROM for note conversion is superfluous. No significant software library that would need it. Native editors and player routines will have to be invented anyway and music compositions often use frequencies differing from notes of a scale (glide/slide/vibrato).
Second AY is cool idea. However, stereo should be supported with a single PSG, too. AY using Z80 machines made stereo sound using two schemes: ABC or ACB. One left channel, one middle channel (most probably mixed on half volume to both sides), one right channel.
Resistor ladders, please. A proper AY-3-8910/YM2149F has two 8-bit parallel ports, so if those are already there they should be put to good use as DAC drivers.
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