Is your feature request related to a problem? Please describe.

As alter part AVR DA DB DD and modern ATtiny CPU are interesting to use
DX CORE is closed to MEGACOREX.

Describe the solution you'd like

Support generic timer mode like ATMEGA4809 CPU for new CPU (ATTINY series 0 1 () 2 and AVR DA DB (DD?)

Describe alternatives you've considered

none existing or adjustment for supporting new parts

Additional context

Put a look at DX CORE lib and mithtycore from Spence Konde.

Thanks in advan,ce t consider benefits of enlargment copatibility CPU supported.

Regards
Laurent