Search found 4 matches

by nukeykt
Sun Mar 14, 2021 11:46 am
Forum: NESemdev
Topic: VRC7 discoveries
Replies: 19
Views: 9821

Re: VRC7 discoveries

It's like that I think https://imgur.com/a/nfZyqR6
by nukeykt
Fri Mar 12, 2021 4:46 am
Forum: NESemdev
Topic: VRC7 discoveries
Replies: 19
Views: 9821

Re: VRC7 discoveries

Have you seen my YM2413 emulation code (https://github.com/nukeykt/Nuked-OPLL), it is based on VRC7 die analysis as well. Would be nice to cross check our findings.
by nukeykt
Thu Mar 21, 2019 11:00 pm
Forum: NES Music
Topic: New VRC7 patch set
Replies: 28
Views: 48073

Re: New VRC7 patch set

Edit: so compared to your description... what does the "next noise bit" mean? And was this maybe attached to bit 0 rather than bit 1 of this $0F register, explaining the buzzy/feedback-style noise? The other 3 seem to correspond to your description validly, though I guess I don't know wha...
by nukeykt
Thu Mar 21, 2019 9:41 am
Forum: NES Music
Topic: New VRC7 patch set
Replies: 28
Views: 48073

Re: New VRC7 patch set

Some info about VRC7's test register(0x0f): Test register: Bit 0: EG output mute Bit 1: Set next noise bit to 1, Reset/Halt LFO(both tremolo and vibrato) Bit 2: PG halt/reset Bit 3: Update tremolo and vibrato every sample(i.e tremolo is 64 times faster and vibrato is 1024 times faster than normal), ...