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→8.2Use in machine language
:- The start address of the song and the memory mapper bank can be set. The play routine itself ensures that the switching of banks is correct.
:- If PSG drums are used, only PSG channel A will be used for this. It is clearly indicated where the PSG is controlled so that this can easily be changed.
:- - The play routine works under both Z80 and R800 modes, but it should not be switched during processor play! The STRMUS routine checks which processor is active at that moment and, if necessary, automatically adjusts the play routine.
Other explanations are stated in the sources themselves.