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|    comp.sys.apple2    |    Discussion about Apple II micros    |    56,720 messages    |
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|    Message 54,956 of 56,720    |
|    fadden to All    |
|    Improving IIgs shadow copy speed with NO    |
|    09 Sep 21 08:59:20    |
      From: thefadden@gmail.com              Many years ago I was told that inserting NOPs into IIgs screen updates could       actually make things faster, because of the way the different hardware       components interact when you're doing a fast copy with shadowed memory (insert       a NOP every 8 or 13 PEIs).        Somebody attached a logic analyzer to a IIgs and timed it a few different       ways, and determined that there is actually no value to adding NOPs:              https://retrocomputing.stackexchange.com/q/228/56              Is there a flaw in their test methodology, or was this actually a myth?              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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