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- 1 rem sound effects
- 2 rem helicopter (vic version)
- 10 gosub 900:goto 100
- 20 poke fr(0),0:poke fr(1),0:poke fr(2),0:poke fr(3),p(50)
- 30 poke vl,0
- 40 for i=0 to 15:poke vl,i:next
- 45 for i=0 to 2:next
- 50 poke fr(3),60:for i=15 to 0 step-1:poke vl,i:next
- 60 for i=0 to 3:poke fr(i),0:next
- 90 return
- 99 rem routine to play sounds when shift is pressed
- 100 print "press shift to stop"
- 110 print".";:if peek(653)>0 then end
- 120 gosub 20:goto 110
- 898 rem routine to set up variables
- 899 rem set up sound control addresses
- 900 dim fr(3),p(127)
- 910 fr(0)=36874:for i=1 to 3:fr(i)=fr(i-1)+1:next
- 920 for i=0 to 127:p(i)=i+128:next
- 929 rem set volume address
- 930 vl=36878
- 990 return
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