Re: About inb, outb, .... !

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Hi !

  I wanted to know where in the kernel 
source of x-86 arch is the implementation of 
inb , outb , inb_p ,outb_p ,etc done ?

  I'am conversant with its usage .

  Looking forward for your help .

Regards .

 --- Iqbal <iqbal@naturesoft.net> wrote: > 
> These api's are used to communicate to the i/o ports
> 
> here the address bits can range from 8/16/32
> bits.(for ex: serial
> port,parallel port etc).
> 
> Try to have a look at the understanding of the i/o
> mapped i/o(inb,outb)
> and the memory mapped i/o(readb,writeb) concepts.
> 
> Iqbal
> 
> On Tue, 2003-01-21 at 11:33, Anticipating a Reply
> wrote:
> > 
> > Hi ,
> > 
> >   I wanted to know where the functions 
> > "inb","outb" , ...etc .
> > 
> >   I  checked out the below file :
> > /usr/src/linux/include/asm-i386/io.h 
> > which has comment saying definitions are 
> > in that file , but I could not understand it .
> > 
> >  Kindly please help me understand how this works .
> 
> > 
> >  Thanks in advance .
> > 
> > Regards !
> > 
> >    
> > 
> >
>
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> > 
> > 
> 
> 

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