Commander X16

well done!

Here's some very well-established differences of OPNx and OPM/P/Z chips, but no one's (on English web that is) talking about. See OPNA OPM application manual for details. And IKAOPM IKAOPN for Verilog codes of what's up internally. if I typed PMD/AMD, I mean PMS AMS, don't know where I picked the PM...

OPNx 2 OPM/P LFO speed convertion. There's three bits on OPNx chips, ranging a speed from 3.98hz to 72.2hz phiM@8mhz. But on OPM, there's 8 bits controlling the speed, ranging from 0.0008hz to 57.4127hz(?) if you can read the YM2151's app manual..... if you can't, here's the code for calculating it....

The YM2151 test regster details:

Note, on OPP, the LFO rest bit is swaped to 9h.
And timmer B resolution is period doubled: 2048 clock cycles on OPP vs. 1024 on OPM
Leaving 8 more undocumented regsters.


https://map.grauw.nl/resources/sound/ya ... 1_test.txt

I need to lay off the Yes Prime Minister.'........

:D here's a spicy. consider it a bliss that it's evolving. Sound system got multiple major -bug- features that still got push backs, with priority level as low as. Not a complaint, an observation this is. I fully understand the where would it ends fear. The fear of eternity, how natural. but it'll c...

As to why filter would do this, think of it as capacitor charge and discharge. In square wave, think only the vertical lines which they have a name that don't remember right now I remembered now it's called rising and falling edges are the only times the chip would output current, other times it's s...

kay, I've enlightened by the wisdoms in furnace discord.
The buffs also believe it's the filtering.

I noticed that the displayed square waves were a bit distorted, as if they were trying to morph into a triangle wave. Is this intentional or an inaccuracy of the player? I think that's ac cupping and the lc-sinc filter in the furnace's doing. but as you can see, it's canceled out by the speaker's p...

This tune mainly focused on improving the precisions on VERA PSG by Time Divisions modulate it and using notes that're aliasing.