4-axis MasterCAM post?

Does anyone know of a MasterCAM post that will support a rotary 4th axis?

All of the posts I've found appear to be variants of MPFAN.PST, which as far as I know only supports 3 axes.

Mastercam post for mach3 will work on your CNC 4-axis.
In G-code should be axis A for example. I don't know your settings, of course.

As for me. I use other programs but they are similar.