[sdiy] pd650 - do all the Roland applicaitons use an identical chip?

[Colin f]

> > Instead of a simple replacement, he went overboard and completely 
> > re-wrote the firmware, not only added plenty of control 
> functions, but 
> > also a character display and mo' knobs.
> 
> Are you sure that that somebody indeed read out the original program 
> instead of just rewriting everything from scratch? After all, 
> the uPD650 
> has just 2kB of program memory and what the box does is rather well 
> known.

I think that one was just a pin-compatible CPU replacement board. with
firmware written from scratch.
IMO, that rather misses the point.
If I want a better sequencer, I just drive my 303 externally from a P3.
But more often than not, the good patterns come from the 303 not quite
giving you what you expect due to its obscure UI.
Hacking it up so brutally can't be good for its value.

Cheers,
Colin f