Topic: Sega of Japan Megadrive sound documents & source code preserved

[dink]

Very cool read about the preservation of Sega of Japan's Megadrive sound drivers & documentation for the ym2612 chip.

https://hiddenpalace.org/News/Sega_of_Japan_Sound_Documents_and_Source_Code

best regards,
- dink

[Gab75]

Out of curiosity... the maximum audio-hardware polyphony of Megadrive should be 9 channels (6 FM channels, YM2612, and 3 PSG channels, SN76496)
The PSG has 3 tones generators and 1 noise generator, but this latter haven't a dedicated channel, so it must use a tone generator channel as output.
Am I right? 

[dink]

Gab75, I'm about mostly sure that the sn76489 has a dedicated noise channel.   

best regards,
- dink

[Gab75]

Gab75, I'm about mostly sure that the sn76489 has a dedicated noise channel.   

So a total of 10 channels. I thought the SN76489 was a "clone" of AY-3-8910 (the sound chip used in the first generation of MSX and in many arcade games of early 80s), instead it was a similar chip, but not a "clone".
Thanks for clarification!