On 2014-02-25 at 18:28:11, Gerrit Heitsch (gerrit@laosinh.s.bawue.de) wrote: > > I believe the idea is that one can get /additional/ configurations > but the default remains valid. > > Then the interesting part is how to switch between them without > breaking > compatibility to existing Software in plain C64 mode. The dilemma > the > C128 designers already faced and _almost_ solved. I think the level of compatibility the C128 designers achieved is much better than “good enough” ;-) I don’t think there is a lot of software that would bang bits marked as “unused” out there in the address space. Sure, some still may (for various reasons, mostly negligence, ignorance or plain bugs which went unnoticed due to lack of side-effects) so maybe the switching has to be done with e.g. a “magic sequence”? This seems like an example of “security through obscurity” but I think it would also be more than “robust enough”. For now I’d be more concerned with the full compatibility of the original setup. I tested (and use) the “realPLA” by skoe (yeah - the same one) but I don’t have the KU board (which is said to be most picky about what controls its chips) to test with. If this one works with all the boards’ versions, then adding extra configs would be a nice icing on the cake. -- SD! Message was sent through the cbm-hackers mailing listReceived on 2014-02-25 18:02:06
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