[sdiy] 7810 CPU info?

[Rainer Buchty]

On Tue, 10 May 2011, Ullrich Peter wrote:

> You should contact Rainer Buchty - he is a 7810 specialist!

While I'm not a 7810 specialist by any means, but thanks for the 
flowers, I do have the complete manual, yes :)

What's not in there, of course, is how to rip data from internal memory. 
According to the datasheet that's impossible (unless the internal ROM 
also accesses some external memory where you can implant a readout 
routine there like it was done e.g. by Musitronics when hacking the 
Yamaha SY77).

(I've been reported by a Casio CZ101 hacker that he was successful in 
toggling the mode lines, i.e. booting the 7810 from an external ROM, 
then switching to internal mode. Since he never came back with a dump, 
however, I doubt that he really succeeded...)

If your inbox is good for 800kB, give me a shout, I'll send you the 7810 
manual then.

Rainer