Hi,
There is a free device driver, with source code in C (++?) written by Tomas Franzon, that allows direct control of I/O ports in Win2K/XP. I do not know if this resolves the issue of direct control of interrupts, though.
The zip file can be downloaded from: http://www.embeddedtronics.com/public/E ... erPort.zip.
Hope this helps.
Regards,
Joe