I made very small milestone in my quest. I have created the equation In WinCUPL with inputs 30Mhz and 15Mhz and generated 7.5Mhz, 3.75Mhz and 1.825Mhz. Put JED file into spare GAL16V8 with GALEP-4 (amazing that thing still works). And bang it works Yes!.

Now on to the next stage put all the other signals in on this Timing PAL.