Editing Television Interface Adaptor (section)

=== Code ===
Shown is the code from combat<syntaxhighlight lang="asm" line="1">
MOTORS	LDA  AltSnd,X
	BEQ  DOMOTOR
	; Pong sound.
	LDA  #$04
	STA  AUDC0,X
	LDA  #$07
	STA  AUDV0,X
	LDA  BounceCount,X  
	STA  AUDF0,X
	RTS  
	; Engine sound.
DOMOTOR	LDY  GAMSHP
	LDA  SNDV,Y
	AND  GameOn             ; Kills sound if no game on by ANDing
	STA  AUDV0,X            ; volume value w/$00 no-game value
	LDA  SNDC,Y
	STA  AUDC0,X
	CLC  
	LDA  #$00
MOPIT0  DEY                     ; This loop sets start value for sound
	BMI  MOPIT1             ; pitch based on GAMSHP in Y (tank,
	ADC  #$0C               ; biplane, or jet)
	BPL  MOPIT0
MOPIT1  ADC  Vtemp,X            ; Use saved velocity to adjust
	TAY                     ; sound pitch via SNDP table
	TXA  
	ASL   
	ADC  SNDP,Y
	STA  AUDF0,X
	RTS  
</syntaxhighlight>