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Convert notes into blockquotes

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James Gregory 2013-12-31 11:06:31 +11:00
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@ -55,9 +55,13 @@ When I compared the C and assembly implementations drawing to normal
system (nondisplay) memory, I found that the assembly code was actually
four times as fast as the C code.
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![](images/i.jpg) *In fact, Listing 37.1 draws VGA lines at about 92 percent of the maximum possible rate in my system—that is, it draws very nearly as fast as the VGA hardware will allow. All the optimization in the world would get me less than 10 percent faster line drawing—and only if I eliminated all overhead, an unlikely proposition at best. The code isn't fully optimized, but so what?*
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> ![](images/i.jpg)
> In fact, Listing 37.1 draws VGA lines at about 92 percent of the maximum
> possible rate in my system—that is, it draws very nearly as fast as the
> VGA hardware will allow. All the optimization in the world would get me
> less than 10 percent faster line drawing—and only if I eliminated all
> overhead, an unlikely proposition at best. The code isn't fully
> optimized, but so what?
Now it's true that faster line-drawing code would likely be more
beneficial on faster VGAs, especially local-bus VGAs, and in slower