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Altera_Forum
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21 years ago

io.h vs normal data access

Hi there, Maybe a silly question... What is the purpose of the io.h headerfile? A memory addressable device can be referenced as follows: data = *(INT32U*) 0x200000; or using...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Rikusg.

If you were working with Nios I then what you showed in your first example was correct. However from a software point of view, you can't pre-determine if you will get a cache hit or miss (cache hit in your case will cause the program to fail since your device will not be accessed).