[python-win32] inb() and outb() with Python Win32 ?

[Tim Roberts]

On Mon, 11 Oct 2004 10:27:44 +0200, Cedric Delfosse 
<cedric.delfosse at linbox.com> wrote:

>do you know if it is possible to do low level port I/O with the win32
>API ? (same as inb/outb function in C)
>I found some Python modules around, but I'd prefer to use the Python
>Win32 bindings.
>  
>


There are no Win32 APIs for doing port I/O.  When you call inb() and 
outb() from C, if you have optimizations turned on, they are in-lined 
directly to IN and OUT instructions.  If you do not have optimizations 
turned on, they call an assembler routine in the C run-time library.  A 
module in C is the best you can do.

Are you aware that port I/O in NT/2K/XP requires the help of a kernel 
driver?  You can do it directly from a Win32 app in Win 98, but not on 
the NT-derived systems.

-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.