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Thanks for your answer I know that the NOR isn't correct but the AND isn't correct too because Temp=&B00000001 IF AdIn>140 THEN Var1=Var1 OR Temp ELSE Var1=Var1 AND Temp IF VAR1=1101 AND 0001(Temp) = 0001 there must be a simpel sollution but I don't see it. 'poort DEFINE ADin AD[1] DEFINE PoortA PORT[1] DEFINE poortB PORT[2] DEFINE poortC PORT[3] DEFINE poortD PORT[4] 'VAR DEFINE Ieen BIT[1] DEFINE Itwee BIT[2] DEFINE Idrie BIT[3] DEFINE Ivier BIT[4] DEFINE I BYTE[1] DEFINE Var1 WORD[2] DEFINE Temp WORD[3] #Ingangen Temp=&B00000001 FOR I=0 to 15 PortA=Ieen 'BCD code PortB=Itwee PortC=Idrie PortD=Ivier IF AdIn>140 THEN Var1=Var1 OR Temp ELSE Var1=Var1 NOR Temp Temp=Temp SHL 1 NEXT > > I want to store 16 equation ( ON(1) or OFF(0) ) in 1 WORD > > So that I can read it out later. > > > IF AdIn>140 THEN Var1=Var1 OR Temp ELSE Var1=Var1 NOR Temp > > If you have a word with one bit set to 1 and the others set to 0 like your temp-variable (which is called a "mask") then you set this particular bit in a different variable by or-ing it bitwise, that is correct. > > But you erase it not by nor-ing it, but rather by and-ing it bitwise with the one's complement of the mask. Example (four bits for better readability): > > Set the bit: > Mask: 0010 > Var: 0000 > Or: 0010 > Bit set, ok. > > Mask: 0010 > Var: 1111 > Or: 1111 > Bit still set, ok > > Erase the bit: > Mask: 0010 > Var: 0000 > Nor: 1101 > Bit not set, other bits modified: incorrect! > > Mask: 0010 > 1's comp: 1101 > Var: 0000 > and: 0000 > Bit still erased, correct > > Mask: 0010 > 1's comp 1101 > Var: 1111 > and: 1101 > Bit erased, correct > > HTH > > Bye > Achim |
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Re: My programm didn't works (von Achim - 29.10.2006 15:42)Re: My programm didn't works (von Hans - 29.10.2006 17:27)