Posted By
Mad
on 2020-03-29
16:05:32
|  Re: Sidekick264 - software defined cartridge
MMS yeah the same view here. About that Hannes stuff.. A "sliding" window (128 byte or 256 byte) has advantages over the Hannes mode. With Hannes you only have the lower 16k (or 4k) for shared usage. Which is some pain to code. For instance if you switch the 64k page, you also switch the interrupt vectors and the displayed image since the TED gets other bitmap data. Actually that 128 / 256 byte stuff is exactly what you want as a coder.. A 16k window like the Csory expansion provides is also cool, but Csory's one seems not widely supported.
With that 16k Csory you could switch the video ram on every scanline to do some cool effects.. I think there are movie players out there who just feed the TED with different data per scanline, but with the Hannes 64k(48k) window that is almost not possible, though..
I have to say that I am really happy with that small "sliding" window stuff! Now have to look on how to support it..
Edit: Changed "Csio" to "Csory".. Sorry..
|
