Conversation

Jarkko Sakkinen

has been a long time, at least two years, but making some music with bitwig. let's see what this turns into :-) just early drafting...
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@jarkko I have some computer music / history questions. Would you be willing to answer few?
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@pavel sure go ahead but i can try :-)
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@jarkko Ok so I'm playing with "fantasy consoles", and they are quite related to historical hardware. Sound system is quite complex, and I'm looking for historical inspiration.

AFAICT first step is 1-bit beeper a-la Sinclair Spectrum, next step is PSG in Commodore C64, and next one is Amiga 500 with basically tracker modules done in hardware.

What would be "next step" after that, and is there good documentation or youtube video about it?
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@pavel I think this more (when bandwdith) but SID is quite different than other chips from that era. It has PSG yes but cuoff and resonance are analog. It would be probably quite different sound if you e.g., connect analog and digital parts in "circuit sense" correctly vs having a fab made single package chip :-)

FPGA is probably what you want to use or like only option that I know, which does not require building a fab. There's project for this:

https://www.fpgasid.de/

YM2149 (e..g, Atari ST) is pure digital with three channel PSG (Yamaha calls it BTW SSG but it's the same same).
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@jarkko I don't think I'm looking for "better SID". Lets say I'm designing sound system for 1995 era hardware. Would I design "better Paula" or something else completely?
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@pavel If I would do sound card myself I'd try to create Gravis Ultrasound :-)
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@jarkko Thank you. Other suggestion I got was Playstation 1 sound subsystem, which AFAICT should be quite similar.
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@pavel Right Google for "Covox Speech Thing". People used build those themselves when even Sound Blaster costed a fortune :-)
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@jarkko No need to google, Covox is resistor ladder on parallel port, I built one because, well, purchasing power parity. I would not be surprised if it still was here somewhere.
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