Quote Originally Posted by Onocyclone View Post
Today I've got a cheap but powerful computer up and running in a chest of draws out the way. It works perfectly and is quite powerful !!
You don't really need a powerful PC far more important is PC with a Good parallel port. Do the driver test in Mach3 folder to check it out.
One problem that can affect more powerful and modern PC's is that they use PP that use 3V not 5V and this becomes a problem for the drives as there's not enough difference in Logic signals so can get strange happenings. This can be made worse by using cheap BOB's that have slow opto's inside.

So if you have a 3V PP then try to find a better quality BOB that pulls the signals to 5V.