95 vs 96 pcm

[Ken Kelly]

Roger,
	Yes, I know the bit,and the decoding of the other 7 in that
byte. We have found enough of the tables to make a
comprehensive tool set. Dave and I are packaging a complete
tool set for the 8051 right now.

		Ken

Roger Heflin wrote:
> 
> On Wed, 15 Dec 1999, Ken Kelly wrote:
> 
> > Eric,
> >       It is as easy as Flipping the Bit!! But first you have to
> > find the bit, and since it is a Flash based PCM you need to
> > have a complete software package to reprogram it. Before we
> > wrote our tools, I socketed my PCM and used a prom burner to
> > change things. This is not for the faint of heart. The Flash
> > chips are 32 Pin J-lead and are in the middle of a lot of
> > components. Removing them and putting sockets on the board
> > requires special tools and skills.
> >
> >       If you don't have the tools: Socketing or Flash Programming
> > Software, I recommend a 555 timer creating a 50Hz square
> > wave to fool the PCM. If you are getting any custom
> > programming on the PCM, then get it turned off. I can
> > disable it if people need it done.
> >
> >               Ken
> 
> The bit is pretty easy to find.  I wrote dave and offered to tell him
> what we looked for to find it.   After we figured out what to look for
> it, it was found pretty fast.
> 
>                                 Roger