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Convert notes into blockquotes

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James Gregory 2013-12-31 11:06:31 +11:00
commit 8ed9dea394
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44-04.md
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@ -107,9 +107,16 @@ set/reset color:
mov es,dx
mov byte ptr es:[di],0ffh
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![](images/i.jpg) *If you're familiar with VGA programming, you're no doubt aware that everything that can be done with write mode 3 can also be accomplished in write mode 0 or write mode 2 by using the Bit Mask register. However, setting the Bit Mask register requires at least one **OUT** per byte written, in addition to the read and write of display memory, and **OUT**s are often slower than display memory accesses, especially on 386s and 486s. One of the great virtues of write mode 3 is that it requires virtually no **OUT**s and is therefore substantially faster for masking than the other write modes.*
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> ![](images/i.jpg)
> If you're familiar with VGA programming, you're no doubt aware that
> everything that can be done with write mode 3 can also be accomplished
> in write mode 0 or write mode 2 by using the Bit Mask register. However,
> setting the Bit Mask register requires at least one **OUT** per byte
> written, in addition to the read and write of display memory, and
> **OUT**s are often slower than display memory accesses, especially on
> 386s and 486s. One of the great virtues of write mode 3 is that it
> requires virtually no **OUT**s and is therefore substantially faster for
> masking than the other write modes.
In short, write mode 3 is a good choice for single-color drawing that
modifies individual pixels within display memory bytes. Not