Re: MachOS reload help
DPIO = Digital Programmable Input Output.
I would bet you that the "DPIO module" is the Mesa 6i25 PCIE card. In the original install it was probably disabled manually, as the mach3 install disks didn't have that is part of their configuration.
Just disable it in the drive manager if you are not going to be using it. OW, you could go to the MESA website and load the device driver... if they had one for winXP (their website doesn't say... it just provides un-named "support software" download). You will find the 6i25 card under the "ANYTHING IO FPGA CARD" tab:
Mesa Electronics
Tim
Tormach 1100-3, Grizzly G0709 lathe, Clausing 8520 mill, SolidWorks, HSMWorks.