Re: How to do IO mapped Implimentation ???

[Misbah khan <misbah_khan@engineer.com>]

You are absolutly right and i guess it will certainly work for 8248 as well ,
but the only concern is that " here in mine case the register is not memory
mapped where as its IO mapped " we have to consider the memory as IO port
and then access the data ....

What you have used i guess its memory mapped ...Is it that accessing memory
mapped is same as io mapped ?????


---Misbah

Misbah khan wrote:
> 
> Hi all...
> 
> I am writing a driver in which device port is mapped to CPLD and 8 bit
> data bus is directly connected from processor to CPLD. Read write on CPLD
> memory mapped (buffer/register) is required to control the device. This is
> now IO mapped to processor.
> 
> I need to know whether i am right if i impliment like this :-
>          addr=ioremap(base_addr);          // Remap to Mem mapped address
>          outb(addr) and inb(addr);
> 
> Please suggest me if i am wrong or there could be better solution to this
> .
> 
> -----Misbah <><
>          
> 

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