hardware.inc Boot-up B register values

Unifies #72 and #74 as requested.

Aug 12 '25 20:08 dmitry-shechtman

I'm not sure if that would be a good idea, since they are being removed for a reason.

Aug 12 '25 20:08 dmitry-shechtman

Everything in hardware_compat.inc was removed for a reason. It's there for backwards compatibility.

Aug 12 '25 20:08 Rangi42

Actually, it might be a good idea to add a comment in hardware_compat.inc with an explanation for every significant change, such as this one.

Aug 12 '25 22:08 dmitry-shechtman

Actually, it might be a good idea to add a comment in hardware_compat.inc with an explanation for every significant change, such as this one.

Maybe so; some already have such comments, e.g. the ones suggesting RGBASM-feature alternatives.

Aug 12 '25 22:08 Rangi42

Maybe so; some already have such comments, e.g. the ones suggesting RGBASM-feature alternatives.

So do we agree on this warranting a separate line with a comment?

Aug 12 '25 22:08 dmitry-shechtman

LGTM, thank you! I'm not actually merging it yet because:

We have multiple ongoing PRs, it might be convenient to iron them all out, then merge all at once and call it a new release
This removes some constants from hardware.inc and so is a breaking change, needing version number 6.0
When we get around to 6.0 I also want to fix #64

Aug 13 '25 13:08 Rangi42

Since we're already breaking it, please consider updating hardware.inc to use S_* for consistency.

Aug 13 '25 13:08 dmitry-shechtman

@Rangi42 do we have a PR for https://github.com/gbdev/hardware.inc/issues/64 ?

Oct 13 '25 09:10 avivace