Re: Accessing I/O Ports in Windows NT/2000

[dennison@telepath.com (Ted Dennison)]

Jeffrey Glenn <jeffrey.glenn@mail1.monmouth.army.mil> wrote in message news:<3C45FC6C.2030208@mail1.monmouth.army.mil>...
> I've found that accessing the I/O ports on Windows 9x is rather easy, 
> but with Windows NT/2000 input and output instructions are privileged 

That's right. NT doesn't allow direct access to the hardware from a
user-mode program. If you want to do that, you have to write a Windows
device driver.

> Does anyone know of an Ada solution to accessing I/O ports on Windows 
> NT/2000?

This isn't a language issue, its an OS issue. What you need to figure
out is how to write a device driver for NT-class OS's. Anything you
learn about that can be translated into Ada quite easily.

Good places to get started are the Microsoft DDK website
(http://www.microsoft.com/ddk/ ) , and the newsgroups
comp.os.ms-windows.programmer.drivers
(http://groups.google.com/groups?group=comp.os.ms-windows.programmer.drivers)
and comp.os.ms-windows-programmer.nt.kernel-mode
(http://groups.google.com/groups?group=comp.os.ms-windows.programmer.nt.kernel-mode
).