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Date: Fri, 21 Sep 2001 10:34:36 +0200
From: Pavel Tsekov <ptsekov@syntrex.com>
Organization: Syntrex Inc.
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To: abhishek gupta <abhi_iit@rediffmail.com>, cygwin@cygwin.com
Subject: Re: asm/io.h where can I find this ??
References: <20010921083445.26638.qmail@mailweb26.rediffmail.com>
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abhishek gupta wrote:
> 
> Hi,
> thanks for replying to our query.
> if we cant run the piece of code on cygwin, than what should do to write to port and read from the port ( low level i/o operations on port ) under windows environment using this gnu compiler (cygwin).
> are there any other API's availble.

I think you should operate the specified parallel device using /dev/lp*
if cygwin supports this. I dont know actually if it does, although
serial devices are supported. Perhaps someone on the list knows and you
should try searching the archives <g> :)

For a Windows specific why to handle the situation check this link
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/filesio_7wmd.asp
or the description
of CreateFile in the MSDN library if you have it. In this topic look for
"Communication Resources".

> 
> thanks
> abhishek
> 
> >> /*----Start of myprog source -------*/
> >>
> >> #include <stdio.h>
> >> #include <unistd.h>
> >> #include <asm/io.h>
> >> #define BASEPORT 0x378
> >>
> >> int main()
> >> {
> >>     int i=0;
> >>     char c='A';
> >>     ioperm (0x378,1,1);
> >>     for (i;i<10;i++) {
> >>        outb(c,0x378);
> >>        printf("%c\n",inb(0x378));
> >>        printf("%c\n",c);
> >>        c++;
> >>     }
> >>     ioperm (0x378,1,0);
> >> }
> >>
> >> /*----End of myprog source -------*/
> 
>

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