CPU requirement by AmigaOS ROMs ?

[freqmax]

Can all Amiga OS ROM versions 1.1 - 3.9 be used with a MC68000 CPU, or does some higher ROM versions require 020?

Or is there any minimum CPU requirements for some ROMs that must be used with a MC68020 at minimum etc?

Incompatible code doesn't necessarily show up directly. And then there's maybe some hook to custom chips?

[freqmax]

I found this:

Amigaworld.de: :: amigaworld :: ...weil es einfach Spass macht! ::   Kickstart ROM

Classicamiga.com: Kickstart Roms Explained

Amiga.org: FYI: some information about different Kickstart ROMs

I note that v3.5 is not recorded in the above links.

Is there any custom chip requirements?, or will a 3.1 ROM run fine with a A500 or a 1.3 ROM in a A4000 ?

How is build and version number related?