Hallo David, Nicolas, > > I think, if you enable Ultimax mode, there is no RAM that can be > written to. > > This way you can use about every memory location above $1000 to map in > your > > own I/O. I just wonder if the SCPU is compatible with this mode. > > After _very_ careful interpretation of the PLA's reverse-engineered > sourcecode, Bogax and I have decided that unless you're writing to the I/O > page, you can't not write to ram. The only thing that throttles the WE > line > on the internal dram is the I/O outputs on the PLA The only thing I know, and even that could be wrong, is that Ultimax is a "way" to replace the Kernal with an external one. Could someone give me some more info/docs/URLs about this subject, please? Groetjes, Ruud http://Ruud.C64.org/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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