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[SOLVED] What is the assembly instruction to shift right for pic16F84A

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bimalkamal

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Suppose my PORTB register contains decimal 128(Hex0x80)

now in a loop the value must change like:- 128->64->32->16->8->4->2->1

Divide by 2 or shift left operation is needed.what to do?


RRF PORTB,1 instruction changes like this:-
(Bits shown)
10000000->11000000->11100000->11110000->11111000->.....->11111111 so, it is not what I want
 

Clear the carry bit before you do the each RRF instruction.
 
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