Hi,
saw this post.....
To use Mach4 you need obviously a PC, it doesn't need to be a flash or powerful unit, just stable. If you use an external
motion controller then any OS including 64bit OS's like Windows10 are fine and laptops work also. If you really must use a parallel port,
and Mach4 does have one called Darwin ($25.00 license fee applies), then you MUST use 32bit Windows7 or earlier, and a desktop rather
than a laptop.
Mach4 was designed for, and really requires an external motion controller, I would recommend an Ethernet SmoothStepper (by Warp9TD, $180USD),
and that needs to be matched to a breakout board(s). A fully developed and good quality unit is the MB3 (by CNCRoom, $180USD), although there are less
sophisticated units which are cheaper.
With Mach4 installed on the PC, the Ethernet Smoothstpper hooked up with its own 5V supply, the MB3 hooked to the SmoothStepper with its own 24V supply
you can hook up your existing stepper drives, homes and limits etc.
Craig