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!
> > >
> >
>