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James Gregory 2013-12-31 11:06:31 +11:00
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@ -61,9 +61,12 @@ adapter cycle-eater, as measured in cycles lost to wait states, is
indeed much worse on AT-class computers than it is on the PC, and it's
worse still on more powerful computers.
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![](images/i.jpg) *How bad is the display adapter cycle-eater on an AT? It's this bad: Based on my (not inconsiderable) experience in timing display adapter access, I've found that the display adapter cycle-eater can slow an AT—or even a 386 computer—to near-PC speeds when display memory is accessed.*
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> ![](images/i.jpg)
> How bad is the display adapter cycle-eater on an AT? It's this bad:
> Based on my (not inconsiderable) experience in timing display adapter
> access, I've found that the display adapter cycle-eater can slow an
> AT—or even a 386 computer—to near-PC speeds when display memory is
> accessed.
I know that's hard to believe, but the display adapter cycle-eater gives
out just so many display memory accesses in a given time, and no more,