28 Oct
2010
28 Oct
'10
12:34 p.m.
In article <4CC95597.9247.C408E0 at cclist.sydex.com>,
"Chuck Guzis" <cclist at sydex.com> writes:
Do modern PCs use memory-mapped I/O?
Just because a CPU architecture has IO instructions doesn't mean you
can't do memory-mapped I/O.
Memory mapped IO is ubuiqitous in MS-DOS based PCs, as it is generally
fastest to write directly to the memory-mapped display memory for CGA
and VGA displays. DOOM and many other MS-DOS VGA style games use this
technique to get the framerates they need.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/>
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