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base:swapping_zp_data [2015-04-17 04:34] (current)
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|+||====== Swapping ZeroPage data ======|
|+||On some occasions you might want to save and restore ZP data. I.e. you have no time to patch a SID player, or the speedup you gain by giving several routines full ZP access is worth it. The small snippet below swaps 10 bytes from $00 on with memory in $10. It clutters X,Y and A though. Enjoy, enthusi.|