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Suckpipe by Triad [web]
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popularity : 48% |
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alltime top: #65974 |
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added on the 2008-01-06 20:52:05 by blkpanther  |
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awesome
rulez added on the 2012-06-05 01:08:02 by Queen_Luna 
Quite good!
From the interview with Daw's (the coder), quoted from www.c64.com
Quote:
(...)
But the first VIC bug-buster I made was a way to scroll hires graphics in full screen pixel by pixel, or high speed from right to left fully raster-timed, even though the processor could not move that amount of memory at the required speed. This technique was used in Suckpipe, my first release for Triad. The problem with hires scrolling was that the amount of machine cycles it took to move the memory was more than it took for the TV raster to draw the screen. The VIC bug I discovered solved this by switching from text mode to hires mode in the exact machine cycle in which the raster shows a certain column. It started showing the hires too late, thus showing the screen eight pixels more to the right than it should have. This meant you didn't have to move the entire graphics memory, but just shift-in and shift-out one column at a time.
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do not post about it in the comments, it will get lost.
instead, click here !