cr1901 changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://libera.irclog.whitequark.org/~h~yamahasynths
<Lord_Nightmare> it might just be a bug in the older one
Jenetrix has quit [Read error: Connection reset by peer]
Jenetrix has joined ##yamahasynths
Jenetrix has quit [Changing host]
Jenetrix has joined ##yamahasynths
Jen has joined ##yamahasynths
Jen has joined ##yamahasynths
Jen has quit [Changing host]
Jenetrix has quit [Read error: Connection reset by peer]
TD-Linux has quit [Ping timeout: 245 seconds]
TD-Linux has joined ##yamahasynths
TD-Linux has quit [Ping timeout: 256 seconds]
TD-Linux has joined ##yamahasynths
<ValleyBell2> I remember someone (maybe Nuke.YKT) saying, that the two disabled FM channels are physically present but not connected.
<ValleyBell2> He definitely had a look at the YM2610 some time ago. There is a " Nuked-OPNB
<ValleyBell2> " repo on his GitHub account.
TD-Linux has quit [Ping timeout: 240 seconds]
TD-Linux has joined ##yamahasynths
Jen is now known as Jenetrix
gruetzkopf has quit [Quit: http://quassel-irc.org - Chat comfortably. Anywhere.]
gruetzkopf has joined ##yamahasynths
gruetzkopf has quit [Client Quit]
gruetzkopf has joined ##yamahasynths
<tunixman> yay dieshots!
<tunixman> yeah, I'd imagine they're just disconnected... didn't pass binning.
<tunixman> hm, I wonder what would happen if it were two different channels that failed...
<andlabs> honestly it sounds intentional to me
<andlabs> the OPN chips are built in a very specific lego-block-y way; they are always sets of 3 identically-configured OPN channels
<qu1j0t3> yeah, i was thinking it's either artificial product segmentation, or yield recovery (good)
<andlabs> YM2203: one set of 3 channels
<andlabs> YM2608: two sets of 3 channels
<andlabs> YM2610/2610B: two sets of 3 channels
<andlabs> YM2612: two sets of 3 cahnnels
<andlabs> always two normal channels and one CSM channel with idependently programmable operator frequencies
<tunixman> oh yeah that's definitely more likely than whatever I was thinking.
<tunixman> laser-drill the selector bits based on testing haha
<andlabs> although on the YM2612 the second set of FM channels has that feature disabled and a direct DAC input is provided instead
<andlabs> I don't know of any other OPN chips or what they provide
<andlabs> just not allowing access to one of the channels would be much easier to implement
<andlabs> though fi it was me I would have called that model the B model instead
<andlabs> IDK
<andlabs> and apparently Yamaha were extremely controlling of who would be able to buy what chip
<andlabs> they would have had a vested interest in doing that
<andlabs> but again, why would they introduce the compromised version later? I have to actually figure out what devices shipped with the 2610 before 1990
<Sarayan> 'b' is the version with more channels...?
<andlabs> yes
<andlabs> or rather, with no channels disabled
<Sarayan> yeah, probably. But I don't see how it matches with "compromised version later"
<andlabs> if we just go by arcade games that I can find the YM2610B was first used on Taito games from 1998
<andlabs> the YM2610 was used on the Neo Geo
<andlabs> so I'm missing some piece of hardware
<Sarayan> neogeo is not 2612?
<andlabs> no
<Sarayan> ah no, megadrive
<andlabs> actually no
<andlabs> vgmrips is wrong
<andlabs> the ninja warriors and darius 2 use a YM2610, not a YM2610B
<qu1j0t3> rip
<andlabs> YM2610 - Continental Circus, The Ninja Warriors (Taito) - 1987
<andlabs> YM2610B - Sonic Blast Man (Taito) - 1990
<andlabs> I blame the M1 player, it had a bunch of wrong stuff 10 years ago
<andlabs> also while the YM2610B was available in 1990 usage didn't start to ramp up until 1993
<andlabs> on a tangential note https://www.youtube.com/watch?v=JuDfVmjFcOk
<NiGHTS> Magical Cat Adventure (1993) [Arcade Longplay] - YouTube
natalie has quit [Read error: Connection reset by peer]
natalie- has joined ##yamahasynths
ejs has joined ##yamahasynths
<andlabs> does google reverse image search ever actually find any matches or does it just do a vague guess and give up instantly, throwing in a totally unrelated search term to compensate
<tunixman> sometimes it does... rarely...
<NiGHTS> This 22-Year-Old Builds Chips in His Parents’ Garage | WIRED
<qu1j0t3> Zeloof?
<qu1j0t3> yeah
<qu1j0t3> he's doing great
<qu1j0t3> the 'parents' garage' angle is a bit tired though
<qu1j0t3> this is certainly not possible for most people))) unlike the dumb subhead
<tunixman> yeah, it's pretty wild. "...he bought it for $1,000..." like, I get that it's 1% of the original price but $1k is still a lot for a kid.
<qu1j0t3> WIRED always going to push a fake meritocracy lol
<tunixman> hahahah yeah...
<qu1j0t3> he's clearly smart but smart ain't enough
<tunixman> 1k Celsius... that's not your average toaster.
<qu1j0t3> smart and a WIRED article is certainly a kickstart
<tunixman> hahah yeah...
<tunixman> And parents that don't mind blowing $20k on broke-ass equipment and harsh chemicals for their kid in a residential neighborhood.
<qu1j0t3> yeah i won't labour the point but there's a LOT to unpack here that they could have avoided by simply... not using those tropes
<tunixman> yeah...
<tunixman> they know their subscribers though.
<qu1j0t3> exactly
<tunixman> how even do you get to 1kC with household gear...
<tunixman> It's hard to put into words just how hot that is. I guess that's why we have the C scale.