It's all documented in his patents en schemo's.
1] a compressor, 2] a 2nd order highpass filter, 3] hard diode clipping, 4] single (double) order low pass.
I have two of the early versions of his rockman's, and particulary stereo, they sound very convincing.
For a MTS system , I am guessing a Dynacomp into RM100, into a tight high gain module (SIR39 clone maybe ?), some chorus+gated reverb(delay) in the loop should work.
I think it can be easely done in a module (sans chorus/gated reverb).