troubleshooting Question

doubt  in Memory map and IO map

Avatar of Madhukar_Mythri
Madhukar_Mythri asked on
SoftwareLinux OS Dev
5 Comments1 Solution1116 ViewsLast Modified:
Hi all,
         
------>How Memory mapped address is fast than IO mapped address???

------> Is IO mapped address is a physical address???
            (Ex: COM port IO-address is 0x3f8  is it physical address... or  processor bus address which is directly linked to COM port IO???)

Rgds
Madhukar
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