Contact Sam Cruise: Routine at EC69

Used by the routines at 64BD, 77D3, 790D, EC7B, ECE1, FADA and FB52. Makes the sound effect that is used when 'M' is pressed to toggle the message speed, and also by Sam when he is walking, finishes a roll or somersault, picks up the hook or budgie, picks up a telephone, is dialling a telephone number, hangs up a phone, changes disguise, lowers his arm, knocks on a door, blows a fuse, flips a light switch, raises or lowers a window blind, throws the hook, or is falling from the roof of a building.

Used by the routines at 64BD, 77D3, 790D, EC7B, ECE1, FADA and FB52. Makes the sound effect that is used when 'M' is pressed to toggle the message speed, and also by Sam when he is walking, finishes a roll or somersault, picks up the hook or budgie, picks up a telephone, is dialling a telephone number, hangs up a phone, changes disguise, lowers his arm, knocks on a door, blows a fuse, flips a light switch, raises or lowers a window blind, throws the hook, or is falling from the roof of a building.
EC69	PUSH BC
EC6A	LD A,$01	BORDER 1 (blue)
EC6C	LD C,$07	Initialise the duration counter
EC6E	XOR $10	Flip bit 4 (the speaker bit)
EC70	OUT ($FE),A	Change the speaker state
EC72	LD B,$C0	Perform the pitch delay
EC74	DJNZ $EC74	Perform the pitch delay
EC76	DEC C	Have we finished the sound effect yet?
EC77	JR NZ,$EC6E	Jump back if not
EC79	POP BC
EC7A	RET