Re: [Dev-C++] writing to ports

[John R. <jt...@ya...>]

I found a way to test the giveio.sys driver with one
of my test programs. Still the same trouble I've had
with other device drivers. I can write and read to the
lpt port but not the com ports.

Anyone have experience using a good device driver for
writing to ports under Win 2000/XP?

I've tried several. Some i get to only work on the
ltp, and some have horrible documentation.

John R


--- "A. Klingenstein" <kli...@we...> wrote:
> John Ramshur wrote:
> 
> > Apparently outportb() or inportb() isn't supported
> in
> > Dev-cpp header files. Does anyone know what
> Dev-cpp
> > uses to write and read to port or memory locations
> in
> > C? With borland I just typed outportb(0x378,
> 0xff).
> 
> That's cause under Windows, only the kernel and
> drivers are allowed to 
> write directly to ports. You need an additional
> driver like giveio.sys 
> to do it for your application
> 
> Alex
> 


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