First of all, I wonder if there exists a multiscan (VGA/AGA) demo for the A1200/A4000? I have been looking for demos to my A1200 but I have only found PAL or NTSC demos, not multiscan demos. I'm interested in this because I only have a SVGA-screen and can only look at PAL/NTSC demos through a VGA-TV box which gives really crap quality. It would be interesting to see what can be done in multiscan mode. I realize multiscan mode slows things down, but I do get high resolution instead.
I have been thinking about programming a multiscan demo myself. My thought is to open a multiscan screen in a system friendly way and take over from there. The question is, how do I take it over? I want to use raster interrupts to make things smooth and I want to get direct access to the screen. I don't want to access the screen in a system friendly way, because that would only slow things down.
Any thoughts/suggestions?
