Any way to speed up OpenTTD on OS3.X?

[itix]

Make sure OpenTTD is running on 8bit screen. Other than that there is nothing to do about it.

[itix]

Nope. SDL should pick one for you when you enter fullscreen mode. Check with Scout it is really 8bit screen OpenTTD is using though 640x480 is already quite good for old Amigas.

[itix]

@Karlos

Never call multiple 68K native OS functions directly from the PPC in time critical sections. Always, and I mean always, write a 68K "entry" function that can then call your OS functions before returning and have the PPC call this.

In context of SDL and SDL games it is not always easy. It is easier if you write your own stuff or doing custom port but SDL games are supposed to build out of the box...

And I think most of WarpUp porters do not understand context switching problem at all... many just recompiler 68k program for WUP and are wondering why it is slower than original...