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Politics : Formerly About Advanced Micro Devices
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To: Tenchusatsu who wrote (45458)1/11/1999 1:23:00 PM
From: Scumbria  Read Replies (3) of 1572507
 
Ten,

This allows programs to write data directly to memory, bypassing the caches, in order to avoid replacing useful data in the cache with useless data. I would believe that this would be very useful in graphics.

x86 has always allowed the user to write data that bypasses the caches. By marking the page as non-cacheable (as any graphics framebuffer or texture data should be marked) the caches will not be updated.

Scumbria
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