The Trap Door: Routine at 64784

64784: Play Menu Music Pulse Tail

Used by the routine at Play_MenuMusicTick. Continuation of the Play_MenuMusic_PulseLoop tone loop when the fine delay is still non-zero. The opening `JR Z` is a never-taken timing pad (entry always has the zero flag clear).
Play_MenuMusic_PulseTail	64784	JR Z,Play_MenuMusic_PulseTail	Never-taken timing pad (`JR Z`). Fall through with the zero flag clear.
Finish the fine-delay tail and return to the main pulse loop.
Play_MenuMusic_PulseTailBody	64786	EX AF,AF'	Switch to the alternate accumulator.
	64787	DEC L	Decrease the coarse delay in L.
	64788	JP Z,Play_MenuMusic_ReloadCoarse	If the coarse delay expired, jump to Play_MenuMusic_ReloadCoarse.
This entry point is used by the routine at Play_MenuMusicTick. Port write used when the coarse delay is still running.
Play_MenuMusic_PulseTailWrite	64791	OUT (254),A	Write the speaker level to port 254.
	64793	NOP	Timing pad before the outer count test.
	64794	NOP	Timing pad before the outer count test.
	64795	DJNZ Play_MenuMusic_PulseLoop	Decrease B and loop to Play_MenuMusic_PulseLoop while the outer count remains.
	64797	INC C	Advance the phase counter in C.
	64798	JP NZ,Play_MenuMusic_PulseWrite	If the phase remains, jump to Play_MenuMusic_PulseWrite.
	64801	RET	Return.