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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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@ -78,9 +78,13 @@ complex memory operation; in pre-superscalar days, we used to employ
those handy CISC memory instructions to do all that stuff without using
any extra registers.
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![](images/i.jpg) *More problematic still is that for maximum pairing, you'll typically have two operations proceeding at once, one in each pipe, and trying to keep two operations in registers at once is difficult indeed. There's not much to be done about this, other than clever and Spartan register usage, but be aware that it's a major element of Pentium performance programming.*
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> ![](images/i.jpg)
> More problematic still is that for maximum pairing, you'll typically
> have two operations proceeding at once, one in each pipe, and trying to
> keep two operations in registers at once is difficult indeed. There's
> not much to be done about this, other than clever and Spartan register
> usage, but be aware that it's a major element of Pentium performance
> programming.
Also be aware that prefixes of every sort, with the sole exception of
the 0FH prefix on non-short conditional jumps, always execute in the