C128 speed on C64 mode?

[adaumann]

I have a question regarding to C128. In some games the faster CPU of the C128 could be used to enhance the speed of C64, I have not found any useful documentation. Is this possible or an idea to integrate in Oscar64?

[theflyingape]

You speak of the speed hack that switches C128 CPU into 2 mHz mode while the VIC-II vertical scan line is blanking the border color... the result is ~20% overall performance gain. Some games will blank VIC-II entirely during a "thinking" phase to enjoy the 2x speed for its crunching.
So this really depends on your needs, not the compiler. I suggest you engage a user forum like Lemon64 and narrow in on what you'd like to implement. There are many examples to accomplish what you are looking for. Enjoy the journey. 👍

[drmortalwombat]

This might be a good idea for the sample set

[drmortalwombat]

https://github.com/drmortalwombat/OscarTutorials/tree/main/1425%20RasterIRQTurbo

enjoy

[adaumann]

Great, I will try to integrate