I have been running mach3 using a destop with no problems,then I wanted to switch to a laptop with a LPT port same address etc (3 settings bi-directional,output,and etc)
Selected bi-directional cnc responded to keyboard commands ok but when i ran the gcode the cnc sounded like it had a stripped gear or missing tooth,i thought the machine had developed a flaw but ,manufacturer says most notebooks will not work with mach3,the LPT port is not the same as a desktop.
Is there settings i could change