I don't agree with the Atari .inc file reorg. Why can't the (modified) content of `_antic.inc`, `_gtia.inc` and `_pokey.inc` stay in `atari.inc`? Pure file size isn't a strong argument in my perspective. If you insist in separate files please name them `atari_antic.inc`, `atari_gtia.inc` and `atari_pokey.inc`.

As far as I see .inc files including other .inc files is a new pattern. I don't see why it should be introduced. Just like C64 code includes (if necessary) both `cbm.inc` and `c64.inc` Atari code may include `atari.inc`and `atari_antic.inc`.

The different chip base addr can be handled either in target-specific .inc files. Then `atari.inc` needs to be re-classified as target-specific with the content partly moving into a `atari-gen.inc` or `atari-generic.inc`.

Or the different chip base addr are handled automatically with .ifdef's based on the predefined target names.