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
andlabs has quit [Quit: My MacBook has gone to sleep. ZZZzzz…]
andlabs has joined ##yamahasynths
Xyz_39808 has quit [Read error: Connection reset by peer]
Xyz_39808 has joined ##yamahasynths
Xyz_39808 has quit [Ping timeout: 245 seconds]
Xyz_39808 has joined ##yamahasynths
mrspicy22 has joined ##yamahasynths
<mrspicy22> Does anyone know about the GEW7?
<cr1901_modern> I have never heard of it, tbh
<cr1901_modern> err, cc: Lord_Nightmare, maybe you've heard of it?
<cr1901_modern> Looks like it's called YMW270-F: "8-bit CPU and RAM (~256 bytes total), combined with a 14-voice hardware multichannel rompler." (http://www.dtech.lv/techarticles_yamaha_chips.html)
<mrspicy22> It's an AWM tone generator
<Lord_Nightmare> gew7 is a weird one, its not like the gew6/8 which are pure AWM tone generators, its an mcu
<cr1901_modern> Looks like quite a chip
<Lord_Nightmare> gew7 might be a gew6 plus some sort of mcu all crammed onto one die
<Lord_Nightmare> could be an 8051 series
<Lord_Nightmare> or something custom
<mrspicy22> The 8051 is toshiba though
<cr1901_modern> Intel originally created the 8051
<mrspicy22> What is a sub CPU then?
<cr1901_modern> It could be an unknown architecture. Or Toshiba could've licensed 8051 IP from Intel?
<whitequark> or from any other company
<whitequark> tons of them do 8051s
<mrspicy22> And the GEW8 is similar to the GEW6 how?
<mrspicy22> I think the GEW10 is similar to the GEW12, it has internal RAM as well
<cr1901_modern> Lord_Nightmare: What _is_ AWM... Amplitude Width Modulation doesn't make sense
<Lord_Nightmare> no, AWM is a form of wavetable synthesis yamaha dealt with in the late 80s/early-mid 90s
<Lord_Nightmare> it was replaced with AWM2 at some point mid-90s
<andlabs> andlabsToday at 9:59 PM
<andlabs> finally connected my zoomfloppy
<andlabs> remember that midi8+ software I thought needed the cart dump?
<andlabs> the used copy I got from a random seller by chance while buying a bunch of their Yamaha CX5M manuals is actually slightly different
<Lord_Nightmare> so now we need TWO cart dumps?
<cr1901_modern> Do we have GEW{6,7,8,10,12} dumps? Admittedly I've never heard of them before tonight.
<cr1901_modern> They seem like newer chips that Yamaha used in keyboards
<cr1901_modern> whitequark: 8051 isn't/wasn't like ARM where you licensed from a single company?
<whitequark> i'm not sure if you needed to license anything at all from intel, but i know lots of companies implemented it from scratch
<cr1901_modern> Ahh, ack
<whitequark> i also think it predates the concept of "IP core" as something you can buy
<mrspicy22> The GEW10 was used in the PSR-220 and PSR-330, PSR-230
* cr1901_modern wonders what the catch is with this ebay listing: https://www.ebay.com/i/124004567720
<cr1901_modern> Oh found the catch- 100 _preset_ voices that can't be modified?
<mrspicy22> For what keyboard?
<cr1901_modern> PSR-220
<mrspicy22> Why?
<cr1901_modern> mrspicy22: I was wondering why a Yamaha keyboard was only $35.00, even used
<cr1901_modern> that seemed pretty cheap to me
<cr1901_modern> But if it's not programmable at all, that makes the price seem more realistic
<cr1901_modern> (Under the assumption that they days of Ebay sellers not knowing better are gone)
<andlabs> Lord_Nightmare: no, but I now have to wonder
<andlabs> there are two possibilities
<andlabs> 1) my nibtools are broken
<Lord_Nightmare> GEW10 i believe is AWM2
<andlabs> 2) the g64 from c64midi.com is a bad dump
<Lord_Nightmare> maybe the first AWM2 device
<andlabs> can't find out right now though
<Lord_Nightmare> cr1901_modern: gew6 and gew8 are not cpus, so we do have dumps of sample data to feed to them (yamaha tg100 dumps)
<andlabs> [22:08:14] cr1901_modernwonders what the catch is with this ebay listing: https://www.ebay.com/i/124004567720
<andlabs> oh wow
<Lord_Nightmare> and gew8 == multipcm from sega so we have plenty of dumps for that
<andlabs> it's like a cross between their early 1990s obviously-a-toy-keyboard style and their late 1990s consumer-range keyboard functionality
<cr1901_modern> I feel like I had a "Radio Shack"-branded keyboard w/ a similar level of functionality
<andlabs> probably, but not likely Yamaha
<andlabs> Casio was happy to do those rebadgings though
<andlabs> I had this keyboard growing up
<andlabs> it was good
<andlabs> though it had both MIDI and non-MIDI versions of instruments for some reason
<andlabs> (XG? it didn't label anything)
<andlabs> and also a number of obviously-toy-keyboard-style keyboards that I don't remember what they are anymore sadly
<cr1901_modern> andlabs: Yes, I also had a CASIO keyboard (now in the hands of a family member). I suspect the Radio Shack keyboard was a rebadged CASIO with less features
<cr1901_modern> I kinda wish I took it with me for a while, but I 1. Don't have the space, 2. I needed something with knobs :P
<mrspicy22> The GEW12 shares ROM space for "program. auto bass chord patterns, demos, lookup tables and samples
<cr1901_modern> So GEW7/12 have a CPU and internal ROMs that need to be dumped
<andlabs> `auto bass chord patterns`
<mrspicy22> Hasn't someone dumped the internal ROM?
<andlabs> glad to see yamaha decided to just smash all their names for this feature together into one name after realizing they were all the same
<Lord_Nightmare> mrspicy22: nope
<Lord_Nightmare> not that i'm aware of
<mrspicy22> Actually it's program/wave ROM though
<andlabs> I still wonder what's inside the CBX-K1XG
<andlabs> I have one but I haven't taken it out of the box yet, let alone opened the case
<andlabs> and more specifically, what combination fo Yamaha XG modules and extensions it's equivalent to
<mrspicy22> Yamaha XG modules are YMW767-VTZ and SWX03
<andlabs> well that last part is the important part
<andlabs> don't want to buy things I already have =P
<andlabs> under a different name
<mrspicy22> The GEW12 is a tone generator as well, but where the pins on the chip that deal with that?
mrspicy22 has quit [Remote host closed the connection]
Xyz_39808 has quit [Ping timeout: 240 seconds]
mrspicy22 has joined ##yamahasynths
mrspicy22 has quit [Remote host closed the connection]
mrspicy22 has joined ##yamahasynths
mrspicy22 has quit [Remote host closed the connection]
mrspicy22 has joined ##yamahasynths
<mrspicy22> How are you?
<mrspicy22> So do you know about the SWX00B?
<cr1901_modern> mrspicy22: I'm afraid I don't :(
<cr1901_modern> Also, please keep in mind IRC is async and it could be a while before ppl respond
<mrspicy22> Okay
<mrspicy22> It's "AWM tone generator and CPU"
mrspicy22 has quit [Remote host closed the connection]
andlabs has quit [Quit: My MacBook has gone to sleep. ZZZzzz…]
andlabs has joined ##yamahasynths
andlabs has quit [Read error: Connection reset by peer]
andlabs has joined ##yamahasynths
<andlabs> woof
Xyz_39808 has joined ##yamahasynths
Xyz_39808 has quit [Read error: Connection reset by peer]
andlabs has quit [Quit: My MacBook has gone to sleep. ZZZzzz…]
andlabs has joined ##yamahasynths
<andlabs> vgmrips really needs to standardize spelling and accent usage
<andlabs> and fix the half-working search feature