Just built the old comp up on the desk and loaded Mach and your xml. Had to change the port to suit the standard address of the onboard but thats the only change I made. I rigged up a PP cable with a LED hooked to Pin1 and Gnd pin and restarted your profile. LED was on as expected then went to MDI and did a M3, LED went out as expected. I have restarted a few times and MDI right away and its always worked, wonder if it is a port problem on your computer?
Hood