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update Bubble System and SegaPCM docs

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tildearrow 2022-05-13 03:18:29 -05:00
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papers/doc/7-systems/bubblesystem.md
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# Bubble System WSG
a Konami's 2 channel wavetable sound generator logic used at their arcade hardware Bubble System.
a Konami-made 2 channel wavetable sound generator logic used on the Bubble System arcade board, configured with K005289, a 4-bit PROM and DAC.
It's configured with K005289, 4 bit PROM and DAC.
however, the K005289 is just part of the logic used for pitch and wavetable ROM address.
waveform select and volume control are tied with single AY-3-8910 IO for both channels.
another AY-3-8910 IO is used for reading sound hardware status.
Also known as K005289, but that's just part of the logic used for pitch and wavetable ROM address.
Waveform select and Volume control are tied with single AY-3-8910 IO for both channels.
Another AY-3-8910 IO is used for reading sound hardware status.
Furnace emulates this configurations as single system, waveform format is 15 level and 32 width.
Furnace emulates this configuration as single system with 32x16 wavetables.
# effects

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papers/doc/7-systems/segapcm.md
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yep, that's right! 16 channels of PCM!
a chip used in the Sega OutRun/X/Y arcade boards. eventually the MultiPCM surpassed it with 24 channels, and later they joined the software mixing gang.
a chip used in the Sega OutRun/X/Y arcade boards. eventually the MultiPCM surpassed it with 28 channels, and later they joined the software mixing gang.
# effects
- `20xx`: set PCM frequency.