what did this instruction do ?

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what did this instruction do ?

 
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  #1
Oct 20th, 2008
Hello

Ok P1.2 is connected to a two external devices if I write a “1” to P1.2 and transistor B is OFF and transistor C is ON and I did MOV C, P1.2 instruction

c = 1 right ? now since c = 1 is it because its ON or because we wrote 1 to P1.2 ?

any help is appreciated
Last edited by Mike_99; Oct 20th, 2008 at 6:39 pm.
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Re: what did this instruction do ?

 
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  #2
Oct 20th, 2008
MOV C, P1.2 simply moves the value on the port pin to the carry.
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Re: what did this instruction do ?

 
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  #3
Oct 20th, 2008
so the carry is = 1 because of the mov or because it was ON ?
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Re: what did this instruction do ?

 
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  #4
Oct 20th, 2008
If P1.2 is set and you move P1.2 to C, then C is set.
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Re: what did this instruction do ?

 
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  #5
Oct 20th, 2008
oh ok I got confused with transistor c

Thank you
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