well, if you already have 727 eproms, i guess you don't need mine my
only 707 eproms are soldered carefully into my machine in kind of a
complex configuration with my other 727 eproms.

anyone got easy access to the 707 chips and is willing to send them
off to ryan

--- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@...> wrote:
>
> Hi Gregory,
>
> I've actually got a USB eprom burner comin' shortly that I bought off
> the bay..... so if you want, I too could make the .bin dumps. We'd
> still need the 707 & 727 sound eproms because if I was to make
> multiple sound banks for the unit, i'd still like the original 707/727
> sound ROM's to be a part of the 16 or 32 banks.
>
> I've found the Linn LM-1, Linn-9000 and Oberheim DMX sound binaries
> online too, so I'd like to incorporate them into such a mod. The rest
> could be created simply by using samples, applying either mu-law or
> a-law compression to them & changing the dropping the bit rate to
> 8-bit and whatever khz the sample rate is.
>
> First thing is first, I'm gonna remove my 727 eproms & solder in
> 28-pin sockets & try just creating a single bank using the same 28-pin
> eproms.....once i've got that down, then I'll work on creating a whole
> bunch of banks for 'em.....the mod will be rather simple to
> install..... cheap too.
>
> If you interested in helping, you could try tracking down some
> original .bin dumps from older 8-bit drum machines, I'm gonna rip the
> eproms from my TR-626, I'd like to find TR-909 .bin's....
>
> Seeya
>
> Ryan
>
> P.S send me an email if you want to throw the eproms my way, perhaps I
> can figure out the interleaving by comparing various eproms.
>
>
> --- In tr-707@yahoogroups.com , "gregory zifcak" <foleymachine@> wrote:
> >
> > hot damn! multiple banks so does this mean you no longer need
> > binaries from kingconga i'm lagging on getting him the chips.
> >
> > --- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@> wrote:
> > >
> > > Actually, I found that 4Mbit eproms aren't as expensive as SRAM
> > > counterparts, mouser stocks 'em for like $6. 8Mbit are like $12....
> > >
> > > They are 32-pin, original 707/727 are 28-pin. The extra address
lines
> > > are at the top of the chip (i think), so you could solder (or socket
> > > is better) 28-pins of the 4/8-Mbit into the holes left by the
previous
> > > Eprom, and just run the extra 4-address lines (for 4Mbit) to a 4-bit
> > > rotary encoder, or use just a extra SPDT (in addition to the rotary
> > > encoder) for the 8Mbit. That would give you access to 16 or 32 banks
> > > of sample memory..... so you could fill it with 505, 626, 707, 727,
> > > 909, LM-1, HR-16, Drumulator, DMX, Korg DDD-XX, you know....all the
> > > classics...and still have room to create your own soundsets to boot.
> > >
> > > I've modded my Casio Sk-5 sampler in this same way, so I know it's
> > > definetley possible.....once we've figured out the interleaving
> exactly.
> > >
> > > Food 4 thought
> > >
> > > Ryan
> > >
> > > So it wouldn't be too hard
> > >
> > > --- In tr-707@yahoogroups.com , "plutoniq9" <Plutonique9@> wrote:
> > > >
> > > > I just bought a USB eprom burner off the bay, so I'll be able to
> mess
> > > > around with "attempting" burning new sample eprom's soon.....
> > > >
> > > > Too bad they aren't all jammed on one eprom, as that would make
> it ez
> > > > to use a larger size, and add switchable banks (by toggle the
extra
> > > > address lines). I guess it makes it a little cool by them being
> > > > seperate, cause then you could have different soundset
> combos.... i'd
> > > > probably just do it to the interleaved ROMS (not crash & ride
> roms)...
> > > >
> > > > Only problem is that large eproms & parallel SRAMS are expensive,
> > > > about 36 bucks a piece for battery backed 1mb SRAMS....but you
could
> > > > fit quite a few sample banks on 'em (ie. 32). I don't know if
Eproms
> > > > go up to that size
> > > >
> > > > I know someone though email communication that understands how to
> > > > interleave samples on Eproms, i'll have to grab the visual basic
> > > > program he uses.
> > > >
> > > > Ryan
> > > >
> > > > --- In tr-707@yahoogroups.com , "acousmatique" <acousmatique@>
wrote:
> > > > >
> > > > > I was planning on ripping the sound SRAMs so that I could
properly
> > > > decode the data and
> > > > > burn new sounds, but then I decided that it was too much hassle.
> > > > Except for the crash and
> > > > > ride cymbals, those are easy. I won't ever use the 707
sounds if I
> > > > rip them. Since I have
> > > > > wanted to make better clock controls I decided that the best
thing
> > > > to do is bypass the
> > > > > whole "gate array" mess and simply reproduce the circuitry
for the
> > > > cymbals for every other
> > > > > voice. This is a lot of new stuff, though - so I'll need to
either
> > > > re-case or squeeze
> > > > > eerything onto a PCB. I am keen to try PCBs but I need a new
> printer
> > > > first, as mine died.
> > > > > Re-casing is a pain but cool since I can fit many other mods
> which I
> > > > simply don't have
> > > > > room for in there.
> > > > >
> > > > > This stuff is on hold with me until later in the spring. I am
> > > > working a lame 3rd shift job
> > > > > now and my garage workbench is frozen, so once it gets
warmer out
> > > > there I'll get started
> > > > > again. I will desolder and rip all of the SRAMs sometime this
> year,
> > > > but I've had to put it off.
> > > > >
> > > > > I miss my modding!
> > > > >
> > > >
> > >
> >
>