Original system is xp been running it for a very long time here is a screen shot of the port monitor (about in the middle of the screen) and the diagnostics page in Mach.



With Win7 32bit same picture.  Notice he port monitor is fine but the Mach diagnostics page is not correct.

I have given up on Mach.  My motherboard finally died and it not worth trying to find a PC that can take dual parallel ports.  On to another platform that can use a modern OS and processor.