NEW
1 GOSUB 10
2 P3.7=0
3 DELAY 1
4 GOSUB 10
5 P3.7=1
6 DELAY 1
7 GOTO 1
10 P1=FEH 
11 DELAY 1 
12 P1=FDH 
13 DELAY 1 
14 P1=FBH 
15 DELAY 1 
16 P1=F7H 
17 DELAY 1 
18 P1=EFH 
19 DELAY 1 
20 P1=DFH 
21 DELAY 1 
22 P1=BFH 
23 DELAY 1 
24 P1=7FH 
25 DELAY 1 
26 P1=FFH
27 RETURN
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cycleall.tmb
cycle P3.7 and all bits of P1