need help to read write to input output port

john2020 · Apr 22, 2014

Hi

How can I read write a byte from input output port located at some address? please help me with some examples

bigdogguru · Apr 22, 2014

When posting a request for advice or examples you need to include specific details as to what you are referring.

What microcontroller? Which port? What compiler/IDE are you utilizing? Etc, etc.

BigDog

john2020 · Apr 23, 2014

I want to know in general, this is not specific to any microcontroller. Or you can refer me to any controller and help me understand this better

horace1 · Apr 23, 2014

in the following notes on the MC68000 there are examples of assembly language code for memory mapped IO and a discussion of polling , interrupts, etc
https://www.google.co.uk/url?sa=t&r...ym1ut-Suv874Psw&bvm=bv.65177938,d.bGQ&cad=rja

john2020 · Apr 23, 2014

I don't know assembly level language. Is there any embedded C code to read and write to input output port?

horace1 · Apr 23, 2014

john2020 said:
I don't know assembly level language. Is there any embedded C code to read and write to input output port?

there are no standard C/C++ facilities as processor architectures and operating systems vary.

For example, on a PC with Windows XP
https://dpointer.blogspot.co.uk/2005/02/io-port-access-under-windows-nt2000xp.html

need help to read write to input output port

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