Thanks for the response. I think you're right on both points. BTW,
this isn't a voice chip, it's actually a data buffer that Roland
sourced from Toshiba. I ordered the chip yesterday, if I get good
results I'll definitely post. It's IC10, which from the schematics
looks to interface the memory cartridges with the CPU, but
apparently the trigger data (or something with that effect) from the
internal memory is routed through there too. Shorting pins 2 and 3
will trigger sounds, but don't do it because I'm about 90% sure
that's what fried the chip. I could be wrong, maybe some random
chip downstream is fried, but I have a good feeling about this.
Anyway, if you ever do a 707, stay the hell away from IC10, and I'd
stay away from 8 and 9, too. For that matter, I'm sticking to the
voice chips and the env generators from now on.

--- In tr-707@yahoogroups.com , "kingconga42" <kingconga8@...> wrote:
>
> --- In tr-707@yahoogroups.com , "philo_707" <philo_707@> wrote:
> > can I
> > put in a chip from a different manufacturer so long as they have
the
> > same part number
>
> i would guess.. yes. but- if it's a voice chip, won't you need to
burn the right
> data onto it
>
>
> > Also, for bit scrambling, is it safe to connect pins of the ROM
chip
> > to different ROM chips,
>
> i've done the bit scrambling with a tr-505 and an alesis hr-16.
I'd say as long
> as you stay away from the 5V+ pin, you'll be ok. Heck, i'd even go
so far as to
> say you can connect different chips in DIFFERENT MACHINES, but i
haven't
> tested that yet.
>
> -justin
> = burnkit2600.com =
>