Pasi 'A1bert' Ojala wrote: >> That would easily use all of the color RAM even with a smaller picture >> area. > I don't think I have changed the location of the color memory on the fly > though. I think it would require double buffering of the screen matrix, as those two go hand in hand. In multi colour mode, the four colours basically are: 1. Colour memory, individual for each character 2. Background colour, normally static for the entire screen 3. Border colour, ditto 4. High nybble of the volume register, ditto In Pasi's picture viewer, at least the background, border and high nybble would be updated on each raster line instead of being static for the entire screen. I suppose if you have enough CPU time you could update the colour memory too, or double buffer the screen matrix and switch the colour memory for at least one more colour. I think in the very latest VIC-20 graphics modes, tricks like these and more have already been taken. It is a matter of how much expansion RAM and CPU time one wants to invest on an effect like that. Best regards Anders Carlsson Message was sent through the cbm-hackers mailing listReceived on 2017-07-07 14:00:06
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