Yamaha's own MIDI definition

[Magnus Danielson]

From: "Dan Gendreau" <gendreau at rochester.rr.com>
Subject: RE: Yamaha's own MIDI definition
Date: Thu, 24 Aug 2000 09:53:35 -0400

> > Do you know a person on this planet who is able to change the ROM EPROM
> > or whatever firmware for a YAMAHA PFP100 electronic piano in order
> > to change max velocity from the annoying 100 to 127 (like the rest of
> > the world?).  I know, any sequencer can do it, as well as many little
> > midi wizzard boxes...
> >  but it would be better to have it right from the start.
> 
> 
> Yeah, My Original DX-7 does the same damn thing. Unless you can find someone
> who likes reverse-compiling 8-bit assembler language, you are out of luck. I
> for one dont.

When we are on the topic... which microprocessors are there in the DX7 and
then also in the DX7II/DX7IIFD?

There are disassemblers around and I just happend to have roled my own
disassembler that I fairly easy can adapt to just about any microprocessor.
I currently have to hack on it to make it deal with the messy i8088, but most
simpler MCUs should work just like a beauty.

So, if I have enougth info on a MCU I can adapt my disassembler accordingly.
It allready has features so that you can toss a single pointer into it and it
will find memory refs and call/jump refs as it goes. You can also supply a
hint-file and put your own names onto things.

Cheers,
Magnus