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9 lines
141 B
QBasic
9 lines
141 B
QBasic
10 GR:COLOR=9
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20 FOR X=0 TO 39
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30 POKE 2138,X
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40 FOR Y=0 TO X
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50 POKE 2140,Y:CALL 2137
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60 PLOT X,PEEK(36)
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70 NEXT Y,X
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100 SPEED=$)%DEL$LRUSR
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