[clug] Snooping PCI register operations under windows?

Brad Hards bhards at bigpond.net.au
Tue Sep 16 19:45:58 EST 2003


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I'm starting to get really annoyed by the i830 (82830) driver support for my 
laptop. In particular, I want to be able to turn on the external video, at 
least in mirror mode. The BIOS can do it on startup (and does, if the monitor 
or projector is connected), Windows XP can do it, but Linux can't.

I've tried to get the doco out of Intel, but never got anywhere. This is still 
the preferred option, but I figure I need Plan B.

I figure if I can watch the right PCI registers, and toggle the mode under 
windows, I can see which bits are flipped. Then I just write a really basic 
utility to flop those same bits, and I'll be set. The hard part is that I 
know absolutely nothing about development or debugging on windows. Is there a 
tool I should use? Or is there a debugging mode built in? 

Brad
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