ChanServ 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://freenode.irclog.whitequark.org/~h~yamahasynths
<protosphere>
maybe it just hasn't processed it fully yet
<cr1901_modern>
Hmmm, possible... I'll just wait and see what happens
<protosphere>
i think the "derive task" it says is processing should handle that
* cr1901_modern
nods
<cr1901_modern>
Also, that doujin page is adorable even if I can't read it lol
<cr1901_modern>
protosphere: Book reader view is working
<cr1901_modern>
(I mainly wanted it b/c... I actually think book view is really good (tm) for reading PDFs)
<protosphere>
is there any decent documentation on the YM2612?
<protosphere>
i have a couple I got ""new"" from ebay but are obviously desoldered
<cr1901_modern>
I am unaware of any existing datasheet for one
<cr1901_modern>
my guess is that Yamaha worked w/ Sega when creating the Genesis dev manual and that was the extent of the actual docs (b/c it's so similar to YM2608, which _does_ have a JP-only datasheet)
<protosphere>
i think i've run across some in japanese but nothing in english
<cr1901_modern>
Ditto w/ whoever developed FM Towns
<cr1901_modern>
I have a YM2608 datasheet in Japanese... data is 2006, prob from spritesmind forums. Someone did a translation more recently.
<Stilett0>
<cr1901_modern> Just something to think about :)... when I upload the OPL2 App Manual, I'm gonna put as a blurb "I did not scan this, someone else found it, I got a copy. Since neither of us remember where they found it, its origin will likely forever remain a mystery."
<Stilett0>
cr1901_modern what's a checksum on it and other metadata? I'll check if it came from me
<Stilett0>
is it SHA1: B7B16C84DB432925FA2A52722E1A1B5C9AFB2891 ?
<Stilett0>
then it came from me, by way of oplx.com
<Stilett0>
and it was in MAMEDev's private collection
<Stilett0>
how it got exfiltrated from there, who can say :)
<Stilett0>
oplx.com sent me a photocopy of the manual he had, many many years ago
<Stilett0>
we also have YMF262 Application Manual, which I got a physical photocopy of from Yehar via snailmail many years ago (http://yehar.com/blog/?p=665 ), and many years later, I scanned
<Stilett0>
okay? okay
<Stilett0>
of course I say "private collection of documents" but there were very few things that needed to be eyes-only
<cr1901_modern>
Stilett0: I just uploaded that onto archive today
<cr1901_modern>
does the SHA1 match yours?
* cr1901_modern
is presently trying to upgrade his VPS, and has to be very careful not to sneeze wrong
<cr1901_modern>
so I'm a bit preoccupied
<Ultrasauce>
its the same
<cr1901_modern>
Okay mystery solved then
<Stilett0>
yes, my copy is SHA1: B7B16C84DB432925FA2A52722E1A1B5C9AFB2891 - I scanned it myself and uploaded it to our team in January 2007.
<cr1901_modern>
Idk how whitequark found it, just that she did in anger :P
<cr1901_modern>
I didn't* know
<cr1901_modern>
well how do you suggest I update the description?
<Stilett0>
I am sorry it wasn't shared sooner. In my early years of datasheet acquisition there were a few cases where I agreed not to share things outside our circle, but this wasn't one of them.
<Stilett0>
you can say something like "courtesy of MAMEdev and OPLX.com" , I don't really care? It's the truth tho
<Ultrasauce>
so have you got opn2 docs squirreled away? :)
<cr1901_modern>
No... closest I have is ym2608
<Stilett0>
I received it around October 2000, finally scanned it in 2007. It was different times. Bitsavers.org didn't really care to host things he didn't scan (still doesn't), I had no real webspace of my own, archive.org wasn't hosting arbitary files. So I uploaded it to our servers and it sat there for a bit.
<ej5>
if you sent bitsavers the physical datasheets, i'm sure he'd scan and upload them. he has very exacting scanning standards and procedures
<Stilett0>
yes. They're photocopies tho, IDK what he thinks of that. :P I've known Bitsavers as an online "friend" back to 1999, sheesh, that's twenty years... :)
<cr1901_modern>
Anyone with a _non_ Comcass email willing to let me send them a test email where they reply?
<ej5>
Stilett0, he might still be ok with photocopies. i've only known him (IRL) for about 10 years.
<cr1901_modern>
Trying to figure out whether I have dovecot/postfix misconfigured or whether Comcast is legit blocking accepting mail from my VPS
<Stilett0>
Ultrasauce: no opn2 docs I don't think that no one else has, though I caught whiff of a rumor recently that something *real* might exist. But I do have a fairly large Yamaha datasheet and manual collection, collected hither and yon over many years. Some from the collection uploaded to Spritesmind, but I already had most of that. Most just through Google-Fu.
<Stilett0>
y'all ain't lived until you're googling the words "'application manual' filetype:pdf" in Chinese, Japanese, and Korean
<Stilett0>
TBH i think it's likely Bitsavers may eventually come across his own pristine copy of YM3812 Application Manual in some documentation acquisitions and scan it himself
<ej5>
hard to say, he got a lot of his material from silicon valley surplus stores which are nearly all closed now
<cr1901_modern>
So... anyone got an email addr I can test with :P?
<Stilett0>
the thing about MAMEdev was: it has its roots in a bunch of reverse-engineer "hackers" releasing a source-available/open-source product, and, in its early years especially, in competition with a bunch of other projects. In the end, it's open-source. But until it released? it was shields-up private. Secret servers. Eyes-only mailing list. These days, it's more different, more open. But
<Stilett0>
in its early days? As much was public, much more was private. "Hacker mystique."
<Stilett0>
Sarayan back me up! :D
<cr1901_modern>
AFAIK, MAME was open source in name only for a long time
<cr1901_modern>
B/c emulation pie is srs bsns
<Stilett0>
srs bsns!
<Stilett0>
cr1901_modern: that's why it was "source available", not open source. Because OSI definitions are srs bsns! :D
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<ej5>
very srs
<cr1901_modern>
Indeed :). And I have... Thoughts about the srs bsns of emulation
<cr1901_modern>
that some ppl don't like
<Stilett0>
very srs.
<Stilett0>
*nods*
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<ValleyBell>
Stilett0: You don't happen to have manuals for some of the more exotic Yamaha sound chips like YMF271, YMZ280B or YMW258/MultiPCM, do you?
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<l_oliveira>
I wonder why chatzilla allows for more than one instance of itself. <shrug>
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