I still have my old MaxNC equipped router built back in the 90's. I purchased their 3-axis motion controller kit & built a wood frame router around it. It still runs the original DOS software on a 386 Toshiba laptop w/Win95! (Have to re-start it in the DOS mode.)
The 24v transformer's OK if it's still good. Mine has one & it's works fine. The controller has rectification & filter on-board.
You can download a Mach3 demo & it comes with a "MaxNC Wave Drive" option that will work with some fiddlin' BUT Chinese breakout boards & controllers that will work great with Mach & Linux are so hilariously cheap now you'd be way better off building a shrine to old, obsolete CNC hardware with that board & just move on without it. I'm all about using old stuff to do good things but the whole MaxNC thing is so over & done it ain't even funny!