K30 and Focus-peaking on legacy Pentax lenses.

I have several Pentax 35mm SLR bodies (K2 & K1000) and four so-called legacy lenses (all K-mount).  Two of the lenses (24mm f2.8 & 35 ~ 70 Zoom) are A-Series and two (50mm f1.7 & 135mm f2.5) are the older M-Series.

I believe that the A-Series lenses will work on the modern DSLR bodies in terms of auto-exposure, but I would have to focus manually.  The M's would be fully manual.  Which brings me to my point:

Will focus-peaking on a K30 work with these lenses ?

--
Dave