Writing to hardware port

[Offir Bakshitz]

Hello.

My application needs to read/write from hardware ports. This application
should operate a specifal made hardware card and will be run in Windows XP
Embedded.
Under Windows CE / DOS I used assembler:

mov dx, word ptr[addr]
in al, dx
mov [bRet],al

Under Windows XP, these are privilledged instruction.
How do I perform the task of reading/writing to a hardware port under
Windows XP?


Thanks,
Offir.

 

[Slobodan Brcin]

Two options
A: Write your driver.
B: Use WinIO from http://www.internals.com or other similar drivers.

Regards,
Slobodan

 

[Simon Wilton]

There is a componentised version of DriverLynx DLPortIO on www.xpefiles.com.
Google for the original package that will tell you how to use it.

HTH

Simon

 

[Offir Bakshitz]

Ok, where can I find information about writing drivers for windows XP
Embedded?

________
Offir

 

[Slobodan Brcin]

Win XP and XPe are the same.

Windows DDK from MS.
But you will need great deal of time to learn writing drivers.

Also I think that WinIO is given in source as well.

Slobodan